35 Years of Collaboration and Innovation 1981–2016

WEMPEC Wisconsin Electric Machines & Power Electronics Consortium

Education

Research

Technology

35 Years of Collaboration and Innovation 1981–2016

WEMPEC: www.wempec.wisc.edu 2559 Engineering Hall • 1415 Engineering Drive • Madison, WI 53706–1691 • Tel: 608–262–3934 • Fax: 608–262–5559 www.wempec.wisc.edu

WEMPEC Founders

Thomas A. Lipo Donald W. Novotny Table of Contents Founders’ Message Co-Directors’ Message...... 2 Executive Director’s Message...... 4 Sponsors...... 5 Faculty and Staff...... 6

History...... 16 Program Activities...... 22 Tom Lipo Don Novotny Facilities...... 32 he idea of an industrial support organization Family and the subsequent creation of WEMPEC T with the help of people like Norb Schmitz, Current Students...... 34 Ken Phillips, and others has been one of the most Alumni...... 35 satisfying and rewarding experiences of our lives. When we founded WEMPEC in 1981, little did we Visiting Professors...... 41 know that this consortium of companies supporting Research Associates and Post-Docs...... 43 our research will likely outlive us! Maybe WEMPEC and the WEMPEC plan was a Visiting Scholars...... 44 very good idea at exactly the right time, but the long-term success we celebrate at the 35-year mark owes everything to the dedication and hard work of the faculty, students, staff, and sponsors who have chosen to be part of the WEMPEC family. Over the past 35 years, our students and visiting researchers have contributed to literally every nook and cranny of the power electronics motor drive world. We are extremely proud of them and what they have accomplished both at UW–Madison and at their present places of employment in industry and academia. The WEMPEC organization has been crucial in providing us the support and incentive to carry out the work we love, and we both are content with the fact that we have left WEMPEC in good hands.

Photo Credits: We thank all of you for your part in making reality Globe on cover, istockphoto.com cherezoff bigger than our dreams. Long live WEMPEC! Professional contemporary photos by Nick Berard, TNT Photography, and Yingie Li, WEMPEC Graduate Student Inside back cover aerial background image by University Communications 1 WELCOME

35 Years of Collaboration and Innovation 1981–2016

Greetings from Bob Lorenz & Tom Jahns, WEMPEC Co-Directors

Bob Lorenz Tom Jahns

s we celebrate WEMPEC’s highly productive consortium. We are we are making on preparations for 35th Anniversary, we invite incredibly fortunate that both of them WEMPEC’s future. First and foremost, A you to take advantage of this continue to make valuable contribu- the addition of Professors Bulent opportunity to learn more about tions to WEMPEC today. Sarlioglu and Dan Ludois as WEMPEC our consortium’s past, present, and This booklet gives us a welcome faculty colleagues represents a giant future. We hope that the material in opportunity to highlight the impres- step toward insuring that WEMPEC will this booklet will deepen your appre- sive accomplishments of our current continue to be at the forefront of new ciation of WEMPEC’s rich history that and graduated students who lie at the technical breakthroughs in the fields of has consistently emphasized rigorous very heart of WEMPEC’s education and electric machines, power electronics, and thoughtful preparation of our research missions. With over 400 gradu- machine drives, and their expanding students, careful attention to the future ates who have earned master’s and applications. As a team, we are working technology needs of our sponsors, doctoral degrees, WEMPEC has gained to strengthen our laboratory infra- and productive collaborations with an international reputation for the structure to insure that our faculty and research colleagues worldwide. technical competence of our gradu- students will continue to have access to To begin, we proudly acknowledge ates, distinguished by their broad and world-class research facilities. and thank WEMPEC’s two founders, deep multidisciplinary skills. WEMPEC’s Our commitment to fulfill our Professors Emeritus Don Novotny and success is reflected in the high levels education and technology transfer Tom Lipo, who collaborated to launch of professional success that have been mission is stronger than ever, reflected WEMPEC back in 1981 when the achieved by so many of our graduates. in the 20+ graduate and under- concept of a university/industry consor- We are extremely pleased that many graduate courses that we offer to tium in this field was new and untested. of our alumni maintain active relation- our students, one of the strongest It is a testimony to their vision and ships with our program by serving as academic programs of its type found dedication that they were so successful WEMPEC sponsor representatives. anywhere in the world. Building on in launching WEMPEC and overseeing As WEMPEC co-directors, we are 31 years of success, our distance its rapid growth into a stable and also pleased by the significant progress learning program continues to serve 2 our sponsors and engineers working in industry by offering these same courses online to off-campus students, WEMPEC’s Vision leading to either a capstone certificate To be the lifelong hub of a worldwide network of engineers who are active or graduate degrees in our master’s in all facets of power electronics and electromechanical power conversion and doctoral programs. and their applications. We conclude by expressing our heartfelt appreciation to all of our WEMPEC sponsors, past and present. We would not be here to celebrate WEMPEC’s Mission this special anniversary if it were not To maintain a tightly-coupled relation- To develop effective methodologies for the unflagging commitment of our ship between WEMPEC-supported for transferring new knowledge sponsors to support this joint enter- university research and educational gained in WEMPEC-supported prise. Our goal is to ensure that our programs and the engineers in global research to all engineers in industry sponsors will continue to benefit from industry who sponsor and support who sponsor and support this both our long-term research and our these programs. research, reflecting a long-term commitment to career development preparation of the next generation of To continuously improve the of engineers in our field. world-class engineers who will help WEMPEC program in order to more them maintain leadership positions in effectively foster and sustain the To globally foster the spirit of tech- the markets they serve. We are confi- growth of advanced electrical nological innovation and progress dent that the next 35 years will bring energy conversion technologies in electrical and electromechanical even greater success to this uniquely and their industrial, commercial, power conversion. productive and synergistic partnership! residential, consumer, automotive, and aerospace applications.

3 WELCOME

Message from WEMPEC’s Executive Director Jim Sember

n anniversary is a time to pause to consider where we’ve been and where we’re going. Like the ancient Roman god Janus, we look both to the past and the future. WEMPEC’s Apast has been characterized by significant ground-breaking research. During our 35-year history, notable accomplishments include:

• Wind turbine design – 1984 • Multiphase motor control – 1994 • Reluctance machines – 1987 • Coaxial winding transformers – 1994 • Resonant link AC converter – 1988 • Active battery equalization – 1994 • Observer-based machine control – 1988 • Three level boost rectifier – 1995 • Adaptive tuning of field oriented drives – 1988 • Estimation of flux, position, and velocity in AC • Soft-switching – 1989 machines – 1997 • Active power filters – 1989 • Self-sensing control of switched reluctance • Loss minimizing control of IM drives – 1989 machines – 1998 Jim Sember • Optimal PM motor design for field weakening • Self-sensing control of AC machines – 1993–2016 WEMPEC Executive Director – 1990 • Vernier PM motor – 2000 • DSP field-oriented control – 1990 • Deadbeat-Direct Torque and Flux Control – 2001 • Vector control of synchronous reluctance machines • Microgrid control – 2002–07 – 1990 • FI-IPM machines – 2008 • Dual active bridge converters – 1990 • Wireless power transfer – 2010 • Axial flux PM motor – 1992 • Capacitive power transfer – 2012 • Accurate flux observers – 1992 • Variable leakage flux PM machines – 2012 • Doubly-salient PM motor – 1992 • Variable magnetization state PM machines – 2013 • Self-sensing field-oriented control – 1993 • Smooth torque flux-switching machines – 2014 • Inductive vehicle charging – 1993 • Electrostatic rotating machines – 2014

These accomplishments have been made possible by a uniquely talented group of faculty, many of whom have received world-wide recognition. In 2014 Professor Emeritus Tom Lipo was awarded the IEEE Medal in Power Engineering for contributions to electrical machine and drive topologies. Also in 2014, Professor Bob Lorenz was awarded the IEEE Richard H. Kaufmann award in recognition of his expertise in self-sensing machine methods. In 2015, Professor Tom Jahns was named to the National Academy of Engineering. Professor Emeritus Don Novotny has received numerous awards and concluded 57 years of classroom teaching in 2013, but still teaches sections of short courses today! WEMPEC is truly a place of rich history: now let’s turn toward the future. In the coming years, WEMPEC will be undergoing a leadership transition. Nevertheless, we will build on our historical strength of educating power engineers in theory as well as practical hands-on techniques. We will continue to push the boundaries of technical expertise in electric machines, power electronics, and drive systems; maintaining our focus in these areas while advancing other technical arenas of significance to our sponsors. We will continue to enhance our value to our sponsors so that WEMPEC sponsorship is the most highly leveraged use of scarce research dollars. WEMPEC will remain a place where the multidisciplinary talents of visionary researchers and their students are wedded to the needs of industry in a way unmatched at any other university.

4 Sponsors (as of April 2016)

ABB Corporate Research Center (U.S.) Kohler Company, Power Systems Div. Rockwell Automation–Standard Drives ABB Inc., Drives and Power Products Division L-3 Communications Electronic Devices S&C Electric Company Alstom Transport LEM U.S.A., Inc. SAFRAN ANSYS Inc. Lenze Americas Sandvik Mining and Construction B.V. Arnold Magnetic Technologies LG Electronics TECO- Westinghouse ASELSAN A.S. Magna Powertrain Teledyne LeCroy BAE Systems Controls, Inc. Magnetek, Inc. TEMA–Toyota Motor Engr & Mfg. N.A. Boeing Company MathWorks, Inc. Texas Instruments BorgWarner Meggitt -OECO TMEIC Corporation Carrier Corporation Mercedes-Benz TMEIC Fuchu, Japan Caterpillar, Inc. Tech Center Miller Electric Manufacturing Company Toro Company, The CRRCR Zhuzhou Institute Co., LTD. Milwaukee Electric Tool Corporation Toshiba International Corporation Daikin Industries Mitsubishi Electric Corporation Toyota Motor Corporation - Japan Danfoss Power Electronics MOOG, Inc Trane Company (Div. of Ingersoll Rand) Delta Electronics, Inc. Moving Magnet Technologies, SA Triumph Aerospace Systems-Seattle DRS Power & Control Technologies, Inc. Nidec Motor Corporation TRW Automotive dSPACE, Inc. Nissan Research Center Unico, Inc. (Div. of Regal) Eaton Corporate Research & Technology Oak Ridge National Laboratory UTC Aerospace Systems Electronic Concepts, Inc. Oriental Motor BTG UTRC (United Technologies Research Center) Electro-Motive Diesel International Corp. Oshkosh Corporation Woodward Aircraft Systems Fiat Chrysler Automobiles Plexus Engineering Solutions Woodward Industrial Systems Flanders Electric Regal Beloit America. Enabling Tech Group Yaskawa America, Inc. Ford Motor Company, Research & Adv. Engr. ResMed Motor Technologies Fuji Electric Co., Ltd. Rockwell Automation–Kinetix Div. GE Aviation–Electrical Power Rockwell Automation–Softswitching Technology GE Global Research Center Generac Power Systems GM Powertrain–Electrification GM R&D–Warren I would be surprised to find many university Harley-Davidson Motor Company led industrial consortiums that have had such HBM Test and Measurement a profound impact on their field. The WEMPEC Hitachi, Ltd. Research Lab name is recognized globally for its excellence Huawei Technologies Co. LTD in education, research and its leadership. Ideal Power, Inc. WEMPEC’s contributions to the evolution and development IMRA Europe SAS Infineon Technologies North America Corp. of electric machine and power electronics technology Infolytica Corporation have transformed the field of electromechanical energy John Deere–Construction & Forestry, Dubuque conversion and are enablers for the advancements that John Deere Electronic Solutions will be critical to address the many challenges facing the John Deere Moline Technology Innovation Ctr. world today related to global warming, energy supply, John Deere Power Systems (JDPS) and economic growth. Johnson Controls, Inc., York — Dr. Michael Degner (PhD ’98) Johnson Electric Industrial Manufactory, Limited Ford Motor Company JSOL Corp. Engr. Technology Div. 5 WELCOMEFACULTY

Thomas M. Jahns Professor Department of Electrical and Computer Engineering

Thomas M. Jahns, IEEE Fellow, received New York, where he pioneered the devel- his SB, SM, and PhD (’78) degrees from opment of high-performance interior MIT, all in electrical engineering. Dr. Jahns PM machines and drives in a variety of joined the faculty at UW–Madison in 1998 research and management positions. as Grainger Professor of Power Electronics During 1996–98, he conducted a research and Electric Machines in the Department sabbatical at MIT where he directed of Electrical and Computer Engineering. research activities in the area of advanced He is a co-director of WEMPEC and the automotive electrical systems and Wisconsin Power Electronics Research accessories as co-director of an industry- Center (WisPERC). sponsored automotive consortium. Prior to coming to UW–Madison, Dr. Since arriving at UW–Madison, Dr. Jahns worked for 15 years in GE Corporate Jahns has continued to pursue research in Research and Development (now GE AC permanent magnet (PM) synchronous Global Research Center) in Niskayuna, machines, focusing on technical issues associated with high-performance PM traction machines including fault-mode analysis and mitigation, high-frequency loss mechanisms, multiphysics design optimization, and integrated motor drives. His current research interests also include changes to the electric grid to make it much more compatible with massive penetration of distributed energy resources, with research projects focused on renewable energy, microgrids, and battery management. In 2005, Dr. Jahns received the IEEE Nikola Tesla Technical Field Award. Dr. Jahns is also a past recipient of the IEEE William E. Newell Award and the Distinguished Service Award from the IEEE Power Electronics Society (PELS). He served as PELS president during 1994–95 and as an elected member of the IEEE board of directors during 2001–02. Dr. Jahns was elected to the U.S. National Academy of Engineering (NAE) in 2015 “for advancement of permanent magnet machines and drives for transportation and industrial applications.” 6 Robert D. Lorenz Professor Department of Mechanical Engineering

Robert Lorenz, IEEE Life Fellow, received his research at the RWTH Aachen University, BS, MS, and PhD from UW–Madison and an Germany. From 1970 to 72, he worked for MBA from the University of Rochester. He the U.S. Army as a systems test engineer has been a UW–Madison faculty member at Aberdeen Proving Ground, Maryland. since 1984 where he is the Elmer R. and From 1972 to 1982 he was a member of Janet A. Kaiser Chair and the Consolidated the research staff at the Gleason Works in Papers Foundation Professor of Controls Rochester, New York, working on high- Engineering in Mechanical Engineering. performance drives and synchronized He is co-director of WEMPEC. motion control. He has been a guest In 1966–67, Dr. Lorenz did his junior professor at the Catholic University of years studies in electromechanical Leuven, Belgium; the RWTH Aachen engineering at the Monterrey Institute University, Germany; and at the Tokyo of Technology in Monterrey, Mexico. In Institute of Technology, Japan. 1969–70, Dr. Lorenz did his masters thesis His teaching interests focus on physics- based methods for controls design and estimation and their accurate digital implementation in electric machines and power electronics. His research interests include motor design for self-sensing and loss-minimizing control, power electronic device junction temperature estimation, real-time control of temperature/strain in power electronic modules, deadbeat-direct torque and flux control for loss manipulation without compromising torque dynamics, and wireless power transfer technologies. He has authored more than 300 technical papers, has won 32 IEEE prize paper awards, and holds 26 patents. Dr. Lorenz was an elected member of the IEEE board of directors 2005–06, the IEEE Industry Applications Society (IAS) president 2001, a distinguished lecturer of the IEEE IAS 2000–01, and awarded the 2003 IEEE IAS Outstanding Achievement Award, the 2006 EPE PEMC Outstanding Achievement Award, the 2011 IEEE IAS Distinguished Service Award, and the 2014 IEEE Richard Harold Kaufman Award. 7 WELCOMEFACULTY

iri enkataramanan power systems, grid interface for electric G V vehicles and utility scale power electronic Professor systems. Department of Electrical and Dr. Venkataramanan complements Computer Engineering his interests in power electronics with educational activism both inside and Institute of Technology and the University outside the classroom, developing hands- of Wisconsin–Madison, respectively. Upon on student projects aimed at increasing graduation, Dr. Venkataramanan moved learning effectiveness and addressing west to take a teaching appointment at energy development issues. In recogni- Montana State University–Bozeman. For tion of his teaching excellence he won seven years, he taught electrical engi- the Gerald Holdridge Teaching Award, neering, developed several courses, and the 2008 Benjamin Smith Reynolds designed and commissioned power elec- Award for Excellence in Teaching, and tronics, electric machines and drives lab. the UW–Madison Chancellor’s Award for Dr. Venkataramanan returned to Distinguished Teaching. In recent years UW–Madison as a faculty member in 1999. he has been leading various research and Giri Venkataramanan studied electrical Since his return, he has played a leading education activities related to sustainability engineering at the Government College role in expanding and modernizing the of the human enterprise in collaboration of Technology, Coimbatore, India, and laboratory infrastructure, while continuing with faculty members across campus, received his BS from the University of to direct research in various areas of including computer sciences, urban and Madras, India. He moved to the United power conversion. He has been actively regional planning, agricultural and applied States to continue his studies and obtained conducting research in the areas of power economics, education, and curriculum his MS and PhD from the California converter topologies, microgrids, wind both nationally and internationally.

8 aniel udois power conversion. From 2008 to 2011, D C. L Dan formed teams with his fellow Assistant Professor WEMPEC students and faculty to push Department of Electrical and these concepts forward. Dan’s efforts won Computer Engineering numerous awards, including the Climate Leadership Challenge Grand Prize, IEEE focus of his undergraduate research was President’s Change the World Competition the use of scanning tunneling microscopy Outstanding Student Humanitarian Award, (STM) to study semiconductor surface UW Engineering Expo, the Burrill Business science at the atomic scale. After Bradley, Plan Competition, among others, garnering Dan enrolled at the University of Wisconsin more than $135,000 and research incubator –Madison to pursue a PhD in the applied space to advance his ideas. After gradu- physics area of electrical and computer ation in 2011, Dr. Ludois and his partners engineering. During his first year Dan used the winnings to cofound Madison was hired as a TA for Dr. Lorenz’s ECE 377, start-up C-Motive Technologies Inc., a Electrical & Electromechanical Energy company that focuses on capacitively Conversion, and realized this could be his coupled power conversion solutions, As a WEMPEC faculty member, Dr. Ludois’s career. He joined WEMPEC in 2007 with Dr. mainly for machines. In 2012, Dr. Ludois research focus has been on broadening Venkataramanan as his PhD advisor. During completed the Weinert Applied Ventures the horizons of capacitive coupling via new his time as a WEMPEC graduate student, in Entrepreneurship (WAVE) certificate dielectric materials and high-frequency Dan focused on the modeling and experi- within the UW MBA program, received a power electronics. Applications include mental validation of modular multilevel WARF Innovation Award for his electrostatic compact wireless power transfer for converters (MMCs), receiving his PhD in machinery patent, and C-Motive placed mobile and rotating equipment, brushless 2011 for his thesis “Wind Farms with DC 2nd in the Wisconsin Governor’s Business electric machine bearing current mitiga- Collection Networks Using Bridge of Bridge Plan Contest. In 2013, Dr. Ludois returned tion, electrostatic (e-field) machinery, and Multilevel Converters.” to UW–Madison as an assistant professor in dual energy cores for integrated inductor- During graduate school Dan pursued the ECE department along with WEMPEC capacitors. In 2015, Dr. Ludois’s efforts his own ideas focused on developing and now serves in an advisory capacity to in electrostatic machinery earned him national rural electrification strategies and C-Motive as chief science officer. a National Science Foundation CAREER early concepts in capacitively coupled Award, one of the highest honors to be bestowed at the beginning of a career. This high-risk-high-reward work focuses on the removal of steel and copper in electric machines, transitioning entirely to plastic and aluminum for lower cost and ease of manufacturing. Dr. Ludois has published ~30 papers and has two issued and six pending patents. He currently teaches ECE 411 “Introduction to Electric Drives” and ECE 711 “Dynamics and Control of AC Drives” and advises two MS and four PhD students. Prior to joining WEMPEC as a faculty member, Dan Ludois attended Bradley University in Peoria, Illinois, where he received his BS in physics in 2006. The 9 WELCOMEFACULTY

ulent arlioglu and Electric Vehicle Design Boot Camp. B S Dr. Sarlioglu believes that these courses Assistant Professor play a key role for technology transfer Department of Engineering from WEMPEC’s teaching and research Professional Development portfolio. He also developed new credit Department of Electrical and courses in the area of renewable energy Computer Engineering and hybrid and electric vehicles in the ECE department. drive. This approach will achieve self-cooling Dr. Sarlioglu spent more than 10 of the rotor and stator due to inherent years at Honeywell’s aerospace division, gas flow, reduction in the axial length of most recently as a staff systems engineer, the compressor, simpler and more robust earning Honeywell’s technical achieve- mechanical design due to reduced axial ment award in 2003 and an outstanding length, and simpler bearing design due engineer award in 2011. He contributed to reduced axial length. Dr. Sarlioglu also many internally or externally funded R&D received other funding from NSF and DOE. programs and realization of many tech- The NSF GOALI project focuses on a novel nology development programs for many Dr. Bulent Sarlioglu earned a PhD from the low pole flux switching permanent magnet platforms including Boeing 7E7 (787), University of Wisconsin–Madison, an MS machine. The DOE project provides funding Airbus A350, and A380. from University of Missouri–Columbia, and for researching grid-connected inverters, Dr. Sarlioglu is the editor of IEEE BS from Istanbul Technical University, all including vehicle-to-grid charging. All of Electrification magazine for electric airplanes. in electrical engineering. He joined UW– these projects provide funding for student Currently, he is the vice-chair of IEEE Power Madison as an assistant professor in 2011. assistantships and research. Electronics Society Technical Committee His research advisors were Dr. Thomas Lipo Dr. Sarlioglu has created many new on Vehicle and Transportation Systems and for his PhD and Dr. Richard Hoft for his MS. short courses, including Introduction to the secretary of the Industrial Applications Dr. Sarlioglu’s interests include electric EMI/EMC, Introduction to Energy Storage, Society Transportation Systems Committee. machines and power electronics. Current AC Machine Design Fundamentals, PM Dr. Sarlioglu is the inventor or co-inventor research includes novel flux switching Machine Design Boot Camp, Power of 16 U.S. patents—three additional U.S. permanent magnet machines and charac- Electronic Design Boot Camp, and Hybrid patents are pending. terization and control of internal permanent magnet machines. His research team also focuses on design and optimization of high- speed machines. In the power electronics area, his research team exploits the wide bandgap devices for use in power electronic converters and addresses many new challenges including EMI/EMC and gate drive design. His research is currently funded by NSF, DOE, and industry. Most recently, he received the Best Paper Award at the 2015 IEEE ITEC and best-presentation recognition at the 2014 IEEE IECON conferences. Dr. Sarlioglu received the prestigious NSF CAREER award which provides funding to his research team for five years to work on an integrated motor and compressor 10 obert asseter the last 10 years he has been the tech- R H. L nical lead for the CERTS Microgrid test Professor Emeritus project at AEP. Professor Lasseter is a Life Department of of Electrical Fellow of IEEE and an IEEE distinguished and Computer Engineering lecturer on distributed generation. CERTS is an organization of four Robert H. Lasseter received his PhD national laboratories (LBNL, SNL, ORNL, in physics from the University of PNNL) and PSerc. The Consortium for Pennsylvania, Philadelphia, in 1971. He Electric Reliability Technology Solutions was a consulting engineer at General was formed in 1999 to research, develop, Electric until he joined the University and disseminate new methods, tools, and of Wisconsin–Madison in 1980. His technologies to protect and enhance research interests focus on the appli- the reliability of the U.S. electric power cation of power electronics to utility system. CERTS research covers three systems. This work includes microgrids, principal areas: real-time grid reliability interfacing distributed energy resources management, reliability and markets, and and renewable to the power distri- distributed energy resources integration. bution system, control of the power Professor Lasseter is the technical leader transmission systems through FACTS of this third area for CERTS. Learn more at controllers, and the use of power certs.lbl.gov/DER.html. electronics in distribution systems. For

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homas ipo count and reduced cost rectifiers and T A. L inverters to name a few. Professor Emeritus Dr. Lipo is a Life Fellow of IEEE and Department of Electrical and received the Outstanding Achievement Computer Engineering Award from the IEEE Industry Applications Society in 1986 for his work in motor Technology, Trondheim, Norway, in 2008. drives, the William E. Newell Award of the He is presently both emeritus professor at IEEE Power Electronics Society in 1990 for the UW–Madison and research professor contributions to power electronics, and at Florida State University. the Nicola Tesla IEEE Field Award from the Dr. Lipo’s contributions in the field of IEEE Power Engineering Society in 1995 electrical machinery and power elec- for his work on electrical machinery. Dr. tronics are extensive, having published Lipo was elected as a fellow of the UK over 650 technical papers as well as 42 Royal Academy of Engineering (one of patents, five books, and eight book chap- only about 25 U.S. members) in 2002 and ters. His impact factor on the Microsoft IP a member of the U.S. National Academy Citation Index in 2013 was the highest for of Engineering in 2008. In 2012 he was Thomas A. Lipo is a native of Milwaukee, the entire field of electrical engineering made a charter member of the National Wisconsin. He has spent his entire career and second over all fields of engineering. Academy of Inventors for his patents on in the technical field of solid state AC According to Google Scholar he has had AC machinery. In 2004 he received the motor drives. He has BEE and MSEE over 30,000 citations referring to his work. Hilldale Award in Physical Sciences from degrees from Marquette University and He has made pioneering contributions to the University of Wisconsin—the univer- a PhD from the University of Wisconsin– emerging electrical machine topologies sity’s most prestigious award for scientific Madison. From 1969 to 1979, he was including flux switched machines, axial research and the only time in its more an electrical engineer in the Power flux machines of many types, self-excited than 40 year history that an electrical Electronics Laboratory, Corporate synchronous machines, open winding engineering professor was selected for the Research and Development, General machines, and novel permanent magnet award. In 2014 Dr. Lipo received the IEEE Electric Company, Schenectady New machines. His efforts in solid-state power Medal in Power Engineering, the highest York, where he participated in some of converters include work on resonant award presented by IEEE for research in the the earliest work in this field. In 1979 he converters, matrix converters, low switch field of power engineering. left GE to take a position as full professor at Purdue University. In 1981, he joined UW–Madison, where he co-founded the industry consortium WEMPEC and served for 28 years as its co-director and as the Grainger Professor for Power Electronics and Electrical Machines. From 2009 to 2013, he simultaneously served as World-Class Professor at Hanyang University in Ansan, South Korea. He has also held briefer positions at Sydney University, Cambridge University, Monash University in Melbourne, Australia, and Harbin Institute of Technology in Harbin, China. He was a Fulbright Fellow at the Norwegian University of Science and 12 onald ovotny two handbooks on electric machines D W. N and drives; and has published more Professor Emeritus than 100 technical articles on electric Department of Electrical and machines, variable frequency drives, Computer Engineering and power electronic control of industrial systems. He has received 11 prize activity in 1996 but continues teaching paper awards from the IEEE Industry part-time. Applications Society and other groups, From 1976 to 1980, he served and three awards for outstanding as chairman of the Department of teaching from the University of Electrical and Computer Engineering. Wisconsin–Madison, the College of He also served as an associate director Engineering, and the Department of of the University-Industry Research Electrical and Computer Engineering. Program from 1972 to 1974 and from Other awards include the IEEE-IAS 1980 to 1993. He has been active as a Outstanding Achievement Award in consultant to many organizations and 1998, the 2009 IEEE-PES Nikola Tesla a visiting professor at Montana State Award, and a Third Millennium Award Donald W. Novotny, IEEE Fellow, University; the Technical University of from IEEE-IAS in 2000. In addition to his received his BS and MS degrees in Eindhoven, Eindhoven, Netherlands; the regular university teaching, he has been electrical engineering from the Illinois Catholic University of Leuven, Leuven, very active in continuing education Institute of Technology, Chicago, in Belgium; and a Fulbright Lecturer at the through short courses and seminars 1956 and 1957, and his PhD from the University of Ghent, Ghent, Belgium. for industry, IEEE tutorials, and video- University of Wisconsin–Madison in Dr. Novotny’s teaching and research tape courses for off-campus graduate 1961. Since 1961, Dr. Novotny has interests include electric machines, study. He also served for twelve years as been a member of the faculty at the variable frequency drive systems, and chairman of the Electrical Engineering University of Wisconsin–Madison, power electronic control of indus- Program for the National Technological where he is currently Grainger Professor trial systems. He is the coauthor of University (NTU). Emeritus of Power Electronics and three textbooks on electromechanical co-founder and former co-director systems; has contributed chapters of WEMPEC. He retired from full-time on variable speed drive systems in

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WEMPEC Staff years working on AC drive development profitability. He developed many state-of- engineering and engineering manage- the-art applications for grid-connected ment. He gained extensive experience energy storage with a variety of battery with controls and power electronics energy storage technologies. development and held an engineering Mr. Sember has been associated with leadership position in a multinational and WEMPEC for the majority of his career as a cross-cultural product development sponsor. In 2013, he joined WEMPEC as its environment. first executive director, while continuing Subsequently, he led product to remain active with battery energy development for generators, automatic storage with a focus on lithium-ion transfer switches, and generator paral- batteries and systems. Power electronics leling switchgear. He obtained an is an intriguing and challenging combina- executive MBA in 2002, after which tion of technologies. In addition to power he led a business division supplying electronics circuit design, the discipline James W. Sember Executive Director medium-voltage UPS, multi-megawatt- includes power systems, machine design, scale grid-connected energy storage, machine control, analog and digital James Sember has worked in the power and power electronics for reactive power electronics, digital signal processing, and electronics and power systems arena for compensation. He grew the business real-time embedded system control. Mr. more than 35 years. After obtaining his at a compound annual growth rate of Sember has done engineering work in all BSEE from Cornell University, he spent 15 27 percent over five years and achieved of these areas. He holds nine U.S. patents

program, providing student support Helene was awarded the Joseph services for the 200+ off-campus students Biedenbach Distinguished Service enrolled annually. Helene served as the Award in 2008 for her work and commit- liaison between off-campus students and ment to the Continuing Professional the UW–Madison faculty and administra- Development Division of ASEE. Helene tion. Students kindly refer to her as Mother was also given the University of Outreach, as she provided assistance with Wisconsin–Madison campus Classified every detail, making the process as seam- Employee Recognition Award in 1995. less as possible. She earned a certificate in distance These skills have transferred nicely learning administration from UW– to her new role with WEMPEC as she Madison in 2008, her bachelor of science keeps track of 70 graduate students, 30 in public administration from Upper visiting scholars, eight faculty and an Iowa University in May 2011, and has executive director. begun a masters in adult education from Helene Demont Administrative Director Helene Demont had been involved Edgewood College. Helene has three with continuing engineering educa- grown daughters of whom she is very Helene Demont became the official tion since 1986. She has been active in proud. In her free time, Helene teaches WEMPEC administrative director on the American Society of Engineering ballet classes to children and adults and February 1, 2013, but she is not a new Education (ASEE), serving as general has become an avid road cyclist who has face to the WEMPEC family. conference chair (2008), program chair completed several two-day, 150-mile From 1986 until 2013 she was (2005, 2000), division chair (2003–05), and rides to raise funds for Leukemia and involved with our distance learning board secretary (2000–03, 2007–2010). Muscular Dystrophy research 14 Kyle is a WEMPEC alum, having obtained Most recently, Kyle worked for Bruker his MS in mechanical engineering with (formerly Prairie Technologies) where he Professor Lorenz in 2011. Since his was responsible for CE-marking, manu- graduation, Kyle spent four years with facturing, continuous improvement and Ford Motor Company, where he gained new feature development for medical extensive experience troubleshooting instrumentation. AC electric motors, embedded code, VB.net applications, feedback controllers, and electrical circuits as well as working with dynamometers for their electric vehicles. Kyle became a lead calibration engineer, responsible for production C-Max and Fusion electric machine characterization. Kyle M. Hanson WEMPEC Lab Manager

WEMPEC student support staff. 15 WELCOMEHISTORY

35 Years of Collaboration and Innovation

WEMPEC lab, 1980s.

n the 1970s rising energy prices the goal of attracting him to Wisconsin. consortium and has served with remark- coupled with developments in the With Professor Lipo’s assistance, the ably few changes to the present time. Iemerging field of power electronics proposal was modified and expanded, Incorporating educational, research, were creating a major worldwide expan- and he was named as the faculty and service components, the overall sion in power engineering activity. member to be hired. program was designed to create a close The UW–Madison faculty in electric The preliminary proposal was working relationship between program machines recognized the need to discussed with a small group of industrial faculty, students, and industrial spon- expand the UW program to become a contacts consisting of Steve Bomba of sors. Emphasis was on generic research dominant player in this growth area. To Allen-Bradley Company and Roy Hyink projects “of a basic and widely applicable reinforce the need for this expansion, and Ken Phillips of Eaton Corporation nature” and means for rapidly commu- it was decided to enlist the support of (then Cutler Hammer Inc). Discussion nicating the results to the sponsors. Wisconsin industry, and in the spring and modification of the proposal occu- Expanded programs of resident instruc- of 1980 a preliminary proposal for an pied several months and resulted in the tion and continuing education courses industrial support group was developed final program plan used to create the were also emphasized. The Wisconsin by Professors Donald W. Novotny and Wisconsin Electric Machines and Power Alumni Research Foundation (WARF) Norbert L. Schmitz. Initial contact was Electronics Consortium (WEMPEC). The was designated to handle any patents established with Professor Thomas A. program plan outlined the goals, admin- developed in the program. The sponsor Lipo (then at Purdue University) with istrative structure, and operation of the contribution was set at $5,000 per year 16 with a maximum of three sponsorship control applications and control design. units available to a single company. In the spring of 1985, Professor Deepak Danfoss continues The program was formally initiated M. Divan joined the ECE faculty and to benefit from our in January 1981 with three sponsors: also became a member of the WEMPEC Allen Bradley Co.mpany, the Graham faculty, adding expertise in power relationship with Company, and Eaton/ Cutler Hammer. electronics. As a result of these addi- WEMPEC; we have been Professor Lipo joined the faculty in tions, WEMPEC attracted participation a sponsor for 20+ years. January 1981, and by the end of the from electronic equipment manufac- WEMPEC research year, six additional companies became turers, control specialists, and machine is internationally part of the list of charter sponsors. tool companies. The scope of WEMPEC renowned and relevant The first WEMPEC Review Meeting was activity was again expanded to include to our research and held at Union South on April 21, 1982, power system applications in 1988 development. Danfoss at which time there were 12 sponsors. by the addition of Professor Robert H. values our WEMPEC The program summary for the first 15 Lasseter. alumni and our months of operation listed nine grad- The 10-year anniversary meeting, continued engagement uate students, two visiting professors, held on April 17, 1991, was attended with WEMPEC students, and three visiting scholars. A total of 11 by more than 140 representatives from faculty, and staff. WEMPEC reports were completed, three 41 companies. During the tenth year short courses were offered, and a total of operation there were 47 graduate —Tom Flygare of 24 projects were started, completed students in the program, nine of Danfoss Power Electronics or continued during the period. There whom received degrees and a total were 34 industrial representatives in of 52 separate research projects were attendance at this first review meeting. From 1982 to 1985, the program grew in terms of industrial sponsors, students, and visiting professors and scholars. The first MS degree (Tim Rowan) was awarded in 1982 and the first PhD (Daniel Kirschen) in 1985. The focus of the research within WEMPEC during this early period was primarily on electric drive systems with much of the work related to energy conserva- tion and efficiency improvement. High performance, field oriented drives were also a major developing technology and a number of research projects and tuto- rial reports were devoted to this area. In December 1984, Professor Robert D. Lorenz joined the UW Department of Mechanical Engineering faculty. Through an affiliate appointment in the Department of Electrical and Computer Engineering (ECE), he became a WEMPEC faculty member, allowing expansion of WEMPEC into motion WEMPEC lab, 1990s. 17 WELCOMEHISTORY

listed for the year. The new Grainger Electric Machines and Power Electronics The WEMPEC program offers an incredible opportunity Laboratory, funded at a level of nearly in terms of classroom education, hands on experience, $1 million (with more than $600,000 from The Grainger Foundation), was and networking with industry leaders. A critical mass of dedicated at the meeting. The labora- first-class students, faculty, and staff provides a powerful tory served very well with no major and truly unique academic experience. From an industry modifications until the laboratory perspective, this combination produces graduates who improvement efforts initiated in 1998. are experts in theory and applications as well as positive Over the first 10 years of operation, members of an organization. a total of over $1.6 million in sponsor — Dr. James McFarland (PhD 2015) contributions provided the base Generac Power Systems funding for a program that had grown to be one of the largest of its kind in the U.S., involving more than 80 different WEMPEC laboratory from 1988 to 1995 graduate students and awarding more and served as a consultant until 2000, than 40 advanced degrees. also left to be part of Professor Divan’s By 1993, the program had reached start-up company. In the fall of 1998, a size where full-time administrative Professor Thomas M. Jahns joined the support was essential and Ms. Kathy Department of Electrical and Computer Torok was hired as an administrative Engineering and the WEMPEC program. assistant. She began the newsletter In the fall of 1999, Professor Giri WEMPEC Review. She continued in this Venkataramanan accepted a position, position until October 2000, when bringing the number of WEMPEC faculty Ms. Bonnie Johnson filled her posi- back up to the pre-1996 level of five tion beginning in January 2001. The professors. Ray Marion, who had partici- WEMPEC library and conference room pated in the laboratory on a part-time were completed in 1994, providing both basis, became the lab manager upon a research library and space for meeting the departure of Randy Gascoigne. with the many company representatives From August 1998 to July 2008, coming to campus to discuss projects WEMPEC participated with Virginia and meet with students. Polytechnic Institute and three other In June 1996, Professor Novotny schools in an NSF Center called the announced his retirement. He has Center for Power Electronic Systems continued to participate in WEMPEC (CPES). Professor Lipo served as the activities by teaching on campus and CPES Campus Director for UW–Madison outreach courses and participating in and Professor Lorenz and Professor WEMPEC staff meetings. Jahns were technical thrust area leaders. The five years between 1996 and Many WEMPEC students participated in 2001 were a time of rapid change of CPES projects and in other CPES educa- personnel, organization, laboratory tional and research activities. WEMPEC facilities, and technology. Professor sponsors were automatically an Deepak Divan left the university, first on associate member of CPES. At this time, leave and then permanently in August the WEMPEC sponsor contribution was 1998, to start and run his own company. increased to $10,000 to better reflect Randy Gascoigne, who managed the First WEMPEC inverter drive, 1982. 18 use as in-house courses by WEMPEC sponsors and other organizations. Significant events in the 5 years preceding the 30th Anniversary Annual Review Meeting May 18–19, 2011, include the retirement of Professor Lipo in 2008 after a distinguished 46-year career in industry and academia. He remains active in WEMPEC research and continues his worldwide travels. Other events include completion of the second generation test stands in the Grainger Laboratory, the termina- tion of WEMPEC faculty participation in CPES as that program reached the end of its 10-year life, and the departure of Professor Annette Muetze to accept a position in England. There was also a change in administrative support as First Grainger instructional lab, 1990–2000. Bonnie Johnson retired after eight years with WEMPEC, and was replaced by increased graduate student stipends The number of regular credit Sandra Finn in 2009. and other rising costs. courses increased from seven in 1981 The last five years have seen Professor Annette Muetze accepted to 19 in 2010 and is presently 21. continued growing diversity of spon- an appointment as assistant professor The first videotaped outreach course sors, coupled with a continuation of in May 2004 and became a WEMPEC was produced in 1984; by 2010 there the number and quality of graduate faculty member. Professor Muetze’s were 16 WEMPEC courses available students, visiting scholars and faculty area of interest was electric machine through the outreach program. In from around the world. As costs rose, design and analysis as related to electric September 2010, the WEMPEC outreach especially the cost of tuition for out drives. In July 2004, Professor Bob (distance learning) program became of state students, sponsorship was Lasseter retired, but has continued his formally managed by the College of increased to $15,000. research in the area of microgrids with Engineering’s Engineering Professional Many important personnel changes only limited participation in WEMPEC. Development (EPD) as an online degree have occurred during this time. Three Randy Gascoigne rejoined the WEMPEC program. In 2015, a new Capstone faculty members have been added: program in 2004 with responsibility Certificate Program was introduced Professor Yehui Han in 2010, Professor for the second generation labora- and has seen enrollment of 30 students Bulent Sarlioglu in 2011, and Professor tory upgrade funded by the Grainger in the first year. In the past five years, Dan Ludois in 2013. Professor Yehui Han Foundation. the number of students taking online departed at the end of 2015 to pursue During the evolution and growth of degree courses has become roughly other interests. Helene Demont, having WEMPEC, the teaching program incor- equal to the number of on-campus had a long involvement with WEMPEC porating regular credit courses, credit students. WEMPEC faculty have through coordinating the distance and noncredit outreach (now distance published six textbooks over the 35 learning program for 30 years, moved learning) courses, short courses, and year duration of WEMPEC and, in addi- in early 2013 to succeed Sandra Finn tutorials has grown and developed to tion, more than 50 sets of the recorded as WEMPEC administrative director. keep pace with technology and the lectures of the distance-learning credit An outside ad-hoc review committee needs of students and sponsors. courses have been sold or rented for identified the need for additional 19 WELCOMEHISTORY

administrative support to ease the battery cell testing systems, which monthly newsletter was revived with administrative burden on the faculty reside in the WEI building. WEMPEC wider coverage of WEMPEC activities. directors. In 2013, Jim Sember was hired lab safety was improved by the addi- More sponsors have taken advantage of to fill a position as executive director tion of emergency stop push-buttons. the opportunity for a technology teview with oversight of finances, operations, Additional space in Engineering Hall meeting with the WEMPEC faculty. and other staff members. Ray Marion was obtained for lab benches, graduate These half day meetings provide the retired in January of 2016 after working student and visiting scholar desks and opportunity for a sponsor to discuss in and managing the WEMPEC labs for a library/meeting room. In late 2014, any technical concern they may have— more than 22 years. He was succeeded GM offered to donate three high-speed ranging from immediate problems to by Kyle Hanson, who is a 2011 graduate state-of-the-art dynamometers that multiyear technical road maps. These of the WEMPEC program. had been used to develop machines for meetings are held in Madison with rele- Many important infrastructure electric vehicles. Two of the dynamom- vant faculty participation. Additionally, improvements have also been made. eters are rated at 170 kW with speeds more students and sponsors are taking In 2012, construction of the Wisconsin up to 15,000 RPM. The first of these advantage of the opportunity for Energy Institute (WEI) building was larger high-speed systems was commis- summer internships. These internships completed. WEMPEC is able to make sioned in late 2015 and has already been provide students with opportunities for use of this state-of-the art building for used by three projects. These systems significant real-world experience which research involving microgrids, advanced provide WEMPEC with test capability for build relationships for future hiring, energy storage for grid and electric machines that is unprecedented in most as well as providing opportunities for vehicle applications, power device other university research programs. technology transfer. reliability, as well as providing addi- Through the addition of faculty Over the 35 years of WEMPEC tional dynamometers. In 2014, Johnson and staff, WEMPEC has been able to operation, approximately 120 PhDs and Controls donated state-of-the-art expand contact with our sponsors. The 280 MS degrees have been awarded. WEMPEC research activity has resulted in more than 1,500 individual project descriptions listed in the annual We at GM are pleased to be an active WEMPEC Program Summaries. The WEMPEC member. There is no better results of this research have been reported in more than 1300 WEMPEC institution than WEMPEC to lead and guide Research Reports. In addition to the our thinking in electric drives. We continue regular schedule of credit courses and to invest in our time and attention to distance learning courses, nearly 75 WEMPEC, including the recent donation short courses have been offered over of three dynamometers to the UW labs. WEMPEC the 35-year period. students consistently show great new possibilities as The international reputation of the well as pragmatic advances in machines and controls. WEMPEC program has attracted more We rely on WEMPEC to staff our engineering groups, than 120 visiting faculty members and through the outreach program, we continue the from all over the world to spend education of the GM team. WEMPEC has a culture of sabbatical time of three months or excellence and service that has served industry for more in Madison. There have been an 35 years, and we are looking forward with WEMPEC even larger number of visiting scholars to create what will come next.” including many postdocs and doctoral candidates who have spent time in the — Peter Savagian, General Director WEMPEC community over this same General Motors Powertrain period. Many significant aspects of

20 Grainger Lab today.

WEMPEC research activity resulted from the interactions fostered by these visits. All of this has been made possible by a cumulative total of over $17 million in sponsor contributions and by the enthusiastic support and countless hours of participation in seminars, individual meetings and attendance at annual meetings by the engineers and managers in our sponsors’ organizations. The 35th year, with 90 sponsors and 70 on-campus graduate students— plus another 40 off-campus with their coursework delivered via the web—and over 75 active research projects, is far larger and stronger than any early vision and plan (or even the wildest dreams) for WEMPEC. The WEMPEC faculty, staff, and students are dedicated to continuing this tradition of excellence and program growth. WEMPEC lab, early 2000s. 21 WELCOME

WEMPEC IN THE CLASSROOM

Campus Classroom ECE 304—Electric Machines Lab ME 446—Automatic Controls* ECE 355—Electromechanical Energy ME 447—Computer Control of The WEMPEC faculty have developed Conversion* Machines and Processes* and continue to evolve a full range of ECE 356—Electrical Power Processing for ECE 504—Electric Machines and Drive semester-long courses in the fields of Renewable Energy Systems Systems Laboratory* electrical machines, power electronics, ECE 377—Fundamentals of Electrical and ECE 511—Theory and Control of AC drives, power systems, renew- Electromechanical Power Conversion* Synchronous Machines* able energy, and real-time control of ECE 512—Power Electronics Laboratory* electromechanical systems. During In addition, Professor Giri Venkataramanan ME 547—Physics-based Modeling for the 35 years since WEMPEC began, has been engaged in teaching courses Computer Control* the growth of the faculty and financial that offer undergraduates the opportunity ECE/ME 577—Automatic Controls resources and the increased number to gain hands-on experience building Laboratory* of students has resulted in an increase power converters and renewable energy from seven courses in 1981–82 to the sources. These courses help attract new There are currently seven courses regularly present 21 courses taught in coopera- students into the power engineering field. offered at the advanced graduate level, tion with other faculty colleagues in the compared with two offered in 1981–82. Electrical and Computer Engineering Starting with three courses in 1981–82, and Mechanical Engineering depart- there are now a total of ten 400- and ECE 711—Dynamics and Control of AC ments. Most of these courses are offered 500-level courses offered to both senior Drives * for credit as digitally recorded lectures undergraduate and graduate students, ECE 712—Solid State Power Conversion* through the University of Wisconsin– three of which are laboratory courses. ECE 713—Electromagnetic Design of Madison College of Engineering Online These are typically taught once per year AC Machines* Degree program, noted in the list below or once every two years. ECE 714—Utility Applications of Power with asterisks. The following undergrad- Electronics* uate courses are taught at least once ECE 411—Introduction to Electric Drive ECE/ME 739—Advanced Automation each academic year: Systems* and Robotics* * Denotes a course that is also offered as a credit ECE 412—Power Electronic Circuits* ME 746—Dynamics of Controlled course in the Online Degree Program ECE 427—Electric Power Systems* Systems* ME 747—Advanced Computer Control of Machines and Processes*

WEMPEC has been a foundational Laboratory teaching is greatly enhanced institution in machines and drives for 35 by the Grainger Teaching Laboratory for Electric Machines and Power Electronics. years. I am fortunate to have been involved This teaching environment is regarded as in the program for the past 20 years, both one of the best in the nation for electric as a graduate student and as part of a machines, power electronics, and their sponsoring company. WEMPEC has been one of the integrated control. The laboratory is also best sources for the next generation of engineers used regularly to provide off-campus making a difference in industry. online degree students with an advanced —Nick Nagel (PhD 1999) laboratory experience by scheduling ECE Triumph Aerospace Systems 504, ECE 512, and ME/ ECE 577 at least once every two years during the summer. 22 Summer Lab for distance learning students.

Distance Learning Classroom conducted using employer laboratory WEMPEC courses offered via the facilities and often involve research topics online degree program are updated regu- Distance education continues to be a related to the engineer’s primary area of larly to ensure that students are exposed major priority of the WEMPEC faculty, job responsibility. As demonstrated by to the most recent developments in each providing a valuable benefit to the a long track record of successful online of the key areas of power technology. employees of WEMPEC sponsor organi- degree students, these research projects Students view recorded lectures at times zations and engineers everywhere. The often lead to innovative technical contri- and locations that fit their schedules, UW–Madison online degree program butions that mutually benefit the student while completing course assignments offers 19 of the 21 undergraduate and employee as well as the employer. and tests on schedules comparable to graduate courses listed in the preceding In addition to the online degree those of their on-campus counterparts. section via recorded lectures. program, another popular online Arrangements are made to ensure The ability to offer this broad range program is now available that offers convenient access to the responsible of online courses to off-campus students practicing engineers an opportu- WEMPEC faculty member via telephone in the areas of power electronics, electric nity to earn a Capstone Certificate in and email for all course-related questions. machines, control, and power systems Power Conversion and Control. This Live sessions are also offered by TAs and makes it possible for working engineers certificate is offered to online students faculty depending on the course. to earn master’s degrees at their home who successfully complete a fixed For complete program and course locations with a minimum of on-campus sequence of three graduate courses information, visit the Department of residency requirements. A few dedicated in power electronics, drives, and Engineering Professional Development engineers continue on, using the controls. In addition to the value of (EPD) Online Degrees and Capstone online degree program as the basis for this certificate as a respected creden- Certificates website: epd.wisc.edu/online- earning their doctoral degrees with their tial for practicing engineers in their degrees. You can also directly contact employer’s support. workplace, this capstone program also Daryl Haessig, program manager of the Some of the engineers who choose serves as a critical stepping stone for power area online degree and capstone to use the online degree program to students wishing to apply for admis- certificate programs, to discuss any pursue advanced degrees are engaged in sion into our online master of science questions regarding program and course research projects under the supervision degree programs in either electrical options, at [email protected] or by of one of the WEMPEC faculty members. engineering (power engineering) or telephone at 608-262-8819. These research projects are typically mechanical engineering (controls). 23 WELCOME

Lab tour for Short Course participants.

Short Courses faculty. Other speakers are invited from The short courses are typically taught industry and national labs with high over three or four days and are held One of the longest and deepest tradi- credentials to teach in these short on the Madison campus. On-site and tions surrounding the University of courses as well. shorter versions of these courses are also Wisconsin is the Wisconsin Idea, which Under the leadership of Professor held at company locations if requested. encompasses a general principle: that Sarlioglu, WEMPEC’s short course port- In addition to presentations in these education should influence people’s lives folio increased from roughly four short short courses, participants are provided beyond the boundaries of the classroom. courses to more than 10 over the last in-class hardware and software demon- In the spirit of the Wisconsin idea, five years. The new courses in the area strations and a tour of the WEMPEC labs. WEMPEC faculty actively engage and of power conversion have increased in WEMPEC sponsors receive a teach in short courses that are provided both breadth and depth and include discount to attend short courses. You by the University of Wisconsin–Madison Power Electronics Design Boot Camp, can find more information about the Department of Engineering Professional AC Machine Design Fundamentals, short courses scheduled for the coming Development. The materials are Introduction to Electrical Energy months via links on the WEMPEC website specially created to benefit the partici- Storage, Introduction to EMI/EMC, (www.wempec.wisc.edu) or EPD website pants with the most up-to-date and Hybrid and Electric Vehicle Boot Camp, (epd.wisc.edu). You are invited to direct relevant information and they include High Speed Electric Machine Design your questions to Bulent Sarlioglu at the most recent teaching material (on-site), and Introduction to Electric [email protected] or 608-262-2703. and research outcomes from WEMPEC Machines and Drives. 24 RESEARCH AREAS ADVANCED MACHINES

WEMPEC research focuses Electric machines are finding ever- in other important areas including the on three major areas: expanding applications and continue development of modular, fault-tolerant Advanced Machines, to be a central focus of attention for PM machines that are far less vulnerable to Power Converters, and WEMPEC because of the critical role they potentially crippling fault conditions, and Controls & Sensor Tech- play in producing and using electric new PM machine topologies that mini- nology, with significant energy. Electric machine research at mize torque ripple or minimize rare-earth investigations in other WEMPEC has earned an international magnet material while delivering world- areas as well. reputation for its long history of ground- class torque density characteristics. breaking innovations that span a wide Other work is under way pursuing WEMPEC’s objective is to spectrum of new topologies ranging innovative approaches to designing PM perform the highest quality from axial-airgap machines to double- machine stators and rotors that reduce long-term research that airgap machines and, more recently, losses and improve thermal management. electrostatic machines. For example, prototype axial-field machines results in technology have been realized using aluminum foil advancements that lead Permanent Magnet (PM) windings that are competitive with copper to future industrial growth. Machines wire windings, and coordinated electrical, WEMPEC research seeds magnetic, and thermal modeling activi- long-term technological WEMPEC faculty members have pioneered ties are under way to establish practical developments and discov- the development of interior PM (IPM) design guidelines. Rotating heat pipes are eries that are years ahead machines that are used in nearly all hybrid- also being developed for insertion into PM of commercially available and battery-electric passenger vehicles machine rotors to significantly improve the products. WEMPEC leads now in commercial production. Major cooling of thermally limited magnets that the world in pushing the technical progress has also been achieved are often buried deep inside. envelope in machines, converters, and controls in unique synergistic relationships to achieve new and innovative technology.

Every time I have the opportunity to visit WEMPEC I learn a lot. I enjoy my time and I love WEMPEC! —Dr. Xiaochuan Jia GE-Aviation

PM machine short-circuit fault testing. 25 WELCOME

Flux Switching PM Machines Variable Flux PM Machines Wound-Field Synchronous WEMPEC is actively working on novel WEMPEC faculty members have also Machines for Traction configurations of flux switching PM pioneered variable-flux IPM machines Applications machines that offer special perfor- that can achieve very significant loss Interest in applying wound-field mance capabilities by moving the reduction in cyclical applications by synchronous machines (WFSMs) as elec- magnets to the stator. As a result, the varying the magnet airgap flux during tric vehicle traction motors has revived. rotors of these machines consist only operation. This airgap flux variation has WFSMs have several potentially signifi- of stacks of steel laminations, yielding been achieved by designing machines cant advantages over state-of-the-art rugged rotor structures suitable for that intentionally cross-couple the IPM synchronous machines and induc- high-speed operation that are similar leakage flux or actively manipulate tion machines. These include reduced to those found in switched reluctance the PM magnetization state during cost from the removal of rare earth machines. Both radial and axial flux operation. These machines are designed permanent magnets, higher efficiencies switching machines are being investi- to enable variable flux and variable though power factor improvements gated. Candidate applications include magnetization as key manipulated and loss-optimized field control, and integrated machine-compressors that states for control. As part of this new improved safety through field control combine electromagnetic and fluid class of PM machine technology, flux- during inverter fault conditions. dynamic design elements into a single intensifying IPM machines have been Promising wireless power transfer tech- physical structure. developed that reduce PM materials niques for rotor field excitation have and losses in duty cycle applications been developed for these machines. when compared to classical flux- weakening IPM machines Electrostatic Rotating Machinery WEMPEC is a pioneer in the development of innovative electrostatic rotating machines. These machines may be injection molded or 3D printed using plastic and aluminum, drastically reducing materials and manufacturing costs. Applications of particular interest are low-speed direct drive machines with dielectric fluid-filled airgaps, as well as machines that can losslessly hold their positions under load for long periods of time, overcoming limitations that have long plagued electromagnetic machines. WEMPEC research has advanced the torque density of rotating electrostatic machines to the point that they are now comparable to air-cooled NEMA frame induction machines. Advances expected during coming years in dielectric materials and geometric optimization will enable designs that meet or exceed the capabilities of air-cooled PM machines. Dynamometer-based machine testing. 26 POWER CONVERTERS

Converter Topologies Modeling and development of power converter topologies for a variety of applications continues to be a major focus for WEMPEC research. The development of higher-speed power semiconductor switching devices that can reach higher power levels increases the switching stresses on components and reinforces the need for soft-switching techniques, origi- nally pioneered by WEMPEC, to manage the undesirable dynamics. Ongoing work in this area includes the introduction of an entirely new approach for high-frequency dc-to-dc power conversion using capacitor coupling to replace transformer coupling Construction of control card for integrated modular motor drive (IMMD). and the introduction of Stored Energy Modulation or SEM. Application of SEM to drive applications reduces the DC link available today. Projects are under way Component Integration capacitance to fractions of a microfarad to demonstrate higher levels of modu- from thousands of microfarads. larization and physical integration of The key to reducing the size and cost Early work on the development of power electronics into loads or sources. of power conversion equipment is matrix and multilevel converters laid the These features are becoming increas- achieving higher levels of integration foundation for more recent work in the ingly important for a wide variety of of components and structures. Passive area of vector switching AC-AC converters important applications ranging from components such as inductors and and modular multilevel converters. motor drives to batteries and solar PV capacitors are fundamental compo- These have led to optimized topologies arrays. WEMPEC research in this area is nents of nearly all power electronic and various design-oriented models for enabling new approaches for gate drive conversion systems. WEMPEC is working applying reactive components in order to designs, efficiency characterization, and on an innovative approach to a highly achieve robust performance. understanding and mitigating EMI/EMC integrated inductor (L) and capacitor (C) aspects of these devices. In addition, design by storing magnetic and electric Power Electronics new approaches are being developed for field energy in a common volume, constituting a dual energy core (DEC). Integration implementing fault-tolerant capabilities in machine drives that are valuable for The DEC enables a four-terminal inte- WEMPEC is taking advantage of the use in everything from renewable energy grated LC device that may be applied in availability of wide-bandgap silicon- systems such as wind-turbine generators nearly any AC or DC circuit configura- carbide and gallium-nitride power to electrified propulsion for land, sea, tion since its characteristics appear as semiconductor switches to achieve and air transportation. Fault tolerance is decoupled lumped elements. breakthroughs in power electronics that particularly critical for demanding appli- will enable future power converters that cations such as flight-critical aerospace are smaller, lighter, and more environ- pumps and actuators where disabling mentally rugged than anything that is failures cannot be tolerated. 27 WELCOME

CONTROLS & SENSOR TECHNOLOGY

Research in advanced controls consti- tutes the third major thrust of the WEMPEC program that ties together advanced machines and power converters. In the early days, WEMPEC faculty led the way in education and application of flux vector control and in development of flux observer and current regulator technologies. The concept of form follows function has inspired the adoption and integration of goals for self-sensing-based control, dynamic loss minimization control, dynamic loss partitioning control, and integration of these controls with next- generation electric machine design.

Deadbeat Control with Design for Dynamic Loss Manipulation WEMPEC development of deadbeat-direct torque and flux control (DB-DTFC) enabled the fastest and Designing self-sensing machine. smoothest possible torque dynamics with virtually independent control Self-Sensing Control & rotating and pulsating voltage vectors of flux linkage. This research set the Design for Self-Sensing was pioneered by WEMPEC research stage for development of flux linkage more than two decades ago. Classical control for purposes of self-sensing, loss WEMPEC has been a leader in design voltage injection or its dual, current partitioning, loss minimization, loss utili- of electric machines to be sensors injection-based methods for self- zation for braking, and other beneficial and power converters, such as design sensing have generally all introduced results, all without affecting the torque for self-sensing. Self-sensing design some form of torque ripple. WEMPEC dynamics. WEMPEC research has also methodologies for induction machines, has more recently developed flux demonstrated that machines can and flux-weakening and flux-intensifying linkage injection-based self-sensing should be designed with these goals IPM machines, and surface PM machines methods (based on DB-DTFC) that in mind, and that machines designed have been developed and demonstrated. should systematically produce no for loss-minimizing control are crucial WEMPEC research has demonstrated torque ripple. to achieving their full energy savings that machines can be designed for self- WEMPEC research has also devel- potential in a wide range of load cycles. sensing without compromising power oped self-sensing methods in which WEMPEC research has also developed conversion capability. complex spatial harmonic content is real-time dynamic loss models for Injection-based self-sensing control used as part of the saliency tracking. machines that are needed to exploit the for high dynamic stiffness control at This has been shown to systematically loss reduction capability of DB-DTFC. zero and very low speeds using both improve the accuracy of self-sensing. 28 The current research is exploring how Using Drives as Sensors enable spatial or temporal synchronous digital image tracking methods can averaging. This takes full advantage of the be used to advantage to significantly WEMPEC research has developed methods high sample rates to allow significant spatial improve accuracy. to enable drives to be used as a primary or synchronous averaging, which in turn sensor for the system in which they are enables the use of adaptive methods to Power Device Dynamic installed. The methods extract the system- learn the system properties and decouple atic data contained in the drive signals Thermal Sensing & Control the normal system properties. The result is sampled at PWM switching frequencies, precision measurement of very small, but WEMPEC has had a strong focus on without needing to employ higher precision highly significant signals that would not be reliability in power electronics based on sensors. The methods developed separate measurable by classical methods based on power cycling. Observer-based methods spatial content from temporal content and current signature analysis using only low bandwidth baseplate temperature sensors can be substantially improved by using high bandwidth Tj sensing. Control methods for the change in junction temperature (∆Tj) using integrated sensors have been demonstrated but have been limited by the lack of accurate, widely applicable methods for integrated Tj sensing. WEMPEC research has developed several generations of non-invasive Tj sensing that are now being integrated into active ∆Tj control to mitigate the limitations of the current technology. For non-invasive Tj sensing on devices and for general control of the converter, current is a key variable to sense. WEMPEC has been a pioneer Unencapsulated devices used for sensor integration. in integrating sub-millimeter-sized point-field detectors such as GMRs into strategic locations of highly integrated power modules to enable control of gate and phase currents, junction temperature and speed. Since device and interconnect strain is a key cause of failure in power modules, WEMPEC research has led in the development of technology to make accurate strain measurements in operating power electronic devices. This research is aimed at enabling accurate strain control to be integrated into the design focus for multiphysics integration of power devices.

Ford F-150 truck converted to battery-electric powertrain for EV research. 29 WELCOME

UTILITY APPLICATIONS

WEMPEC research is delivering innova- encompassing renewable wind and solar, for breakthroughs that are needed in tive approaches for building smaller-scale natural gas generators, and microtur- every aspect of the future electrical grid. distributed generation systems that can bines. WEMPEC researchers are working WEMPEC is conducting fundamental be integrated with more conventional with faculty colleagues in other parts research for V2G inverter design and centralized power generation systems of the university to develop promising control for performing utility grid services. or function separately. WEMPEC faculty new electric grid architectures that In addition to efforts focused on the members have long been leaders in the embody bottom-up concepts giving developed world, WEMPEC research development of new microgrid concepts. utility customers many more options for is aggressively applying these same This work has contributed substantially generating their own power and avoiding distributed energy system concepts in to the fact that the microgrid is now outages. This ongoing research is directly innovative ways to provide practical the dominant paradigm for distributed tackling technical challenges posed by and reliable electricity to unserved and energy systems incorporating a wide the intermittency of renewable energy under-served communities and larger range of power generation sources sources, creating exciting opportunities population centers around the world.

480V 3-phase microgrid testbed including cabinets for solar PV microsource (left) and smart switch (right). 30 ENERGY STORAGE AND POWER TRANSFER

Batteries and Ultracapacitors WEMPEC has developed and demonstrated advanced wireless power transfer Reflecting the growing needs for advanced techniques for efficiently transmitting electrical energy storage for a variety of electric power across 30 centimeters of important applications, WEMPEC research airgap while maintaining an intrinsically efforts have continued to expand in scope safe level of flux linkage in the air gap, and magnitude. WEMPEC researchers are offering promising approaches for elimi- delivering innovations that are critical for nating the physical plugs from plug-in the future use of batteries and other elec- vehicles. WEMPEC developed surface trochemical energy storage components in spiral winding technology, coupled via both electric propulsion systems for land- megahertz resonant technology has the based vehicles, as well as grid-based energy potential to improve safety with intrinsi- storage systems needed to overcome cally low flux density in the airgap and the intermittency limitations of renew- 95 percent efficiency of power transfer in able energy sources. Optimized hybrid the low kW power range. Other inno- battery systems have been developed that vative winding designs that minimize combine high-energy-density batteries proximity effect and eddy current losses with high-power-density ultracapacitors to are under development, along with meet the demanding requirements of elec- power converter circuits to enable this trified vehicles. WEMPEC has made major technology. progress toward addressing important A closely related area of WEMPEC battery management issues, including the research focuses on using wide bandgap development of more accurate models to power devices to increase switching monitor battery state-of-charge (SOC) and frequencies to the MHz range at kW power aging mechanisms, as well as improved levels which allow capacitive coupling techniques for equalizing the charge to be used for power transfer, turning among long series strings of batteries. The coupling structures into simple surfaces. unique combination of state-of-the-art battery test equipment in our laboratories Surface spiral winding for wireless power transfer. combined with on-road electric research vehicles is providing WEMPEC researchers with valuable advantages for pursuing new advances in this field

Wireless Power Transfer Wireless power transfer utilizes dynamic electric or magnetic fields to transfer power between systems without a galvanic connection. Coupling inductors/capacitors, compensation networks, and power converters must be designed in close coordination to achieve a high- performance system. Battery testing using thermal chambers in the Johnson Controls Energy Systems Laboratory. 31 WELCOMEFACILITIES

WEMPEC Electric Machines and Power Electronics Research Labs

The WEMPEC research labs are equipped for 50 to 60 graduate students to work on machines, motor drives, power electronics circuits, microgrids, battery systems, electric traction systems, wireless power transfer, and machine and power electronics packaging research. We recently expanded our test capability by the generous donation of three high-speed dynamometers from GM, to include more than 15 dynamometer test benches for controls and electric machine research.

LAB DYNAMOMETER CAPABILITY # Power Torque Speed 2 170 kW 391 Nm 15,000 rpm 170 KW, 15,000 RPM Dynamometer in use. 1 97 kW 129 Nm 12,000 rpm

12+ < 20 kW <100Nm <7000 rpm

A variety of commercial and specially constructed power converters and LAB POWER CAPABILITY DSP-based controllers are available for general drives and power converter 480V~ 3P 50 to 200A research activities. Printed circuit board 240V~ 3P 50A assembly/disassembly equipment includes a pick-and-place machine, 208V~ 3P 4W 50A inspection microscope, and a variety Battery test equipment including thermal chambers and cyclers. of current technology soldering and de-soldering equipment. A large range of test and measurement instruments needed for power electronics and machines research are available in the lab including Yokogawa power meters, 12-bit oscilloscopes, dynamic signal analyzers, high-power DC and AC supplies, 60 differential voltage probes, and a correspondingly high number of current probes.

We continue to expand and upgrade our facilities with recent acquisitions of new lab space and the conversion of a graduate student office into a fourth research lab with seven benches. Our labs now include more than 34 maple-surface movable work-stations for researchers to build and test equipment. In addition, we installed a new E-stop safety system in all of our labs to shut down power from all three phase receptacles in the event of an emergency.

32 Wisconsin Energy Institute (WEI)

The newest laboratory space available interface units to several different types to emulate a wide variety of prime movers to WEMPEC researchers is the Integrated of dc sources including both real and or loads including wind turbines and Energy Systems Laboratory (IESL) that emulated solar PV and battery micro- internal combustion engines. Additional was commissioned in 2013 when the sources. Other available sources and loads special test facilities available in IESL WEI building was opened. The labspace, include a 60kW natural gas generator, include state-of-the-art battery cycling consisting of a high-bay lab and an resistive load banks up to 155kW, and a and test equipment donated by JCI, and adjacent staging laboratory, was custom- high-performance 170kW dynamometer an Opal RT OP5600 hardware-in-the-loop designed for research focused on grid donated by GM that can be programmed (HiL) real-time computer. integration topics including microgrids, renewable energy, energy storage, and advanced electric energy systems. The MICROGRID CAPABILITY lab features five research bays, each equipped with water, compressed air, Isolated Utility Connection 750 kVA natural gas, exhaust, and access to 750kVA of isolated 480V, 3-phase electric power Static Switch Sync & Connection Point 250 A that is readily expandable to 2MVA. The Grid Connected Inverter 45 kW lab also includes a five-ton overhead lift and separate overhead wiring trays for Natural Gas Generator 60 kW power and communications connections. The high-power microgrid testbed is Photovoltaic Array 8 kW currently configured for 208/480V 3-phase Simulated Wind Turbine (dyno + motor) 135 kW power, including a 250A static switch for utility synchronization and connection. Resistive Load Bank 155 kW Several 45kW inverters are configured Battery Bank 4 kW with custom controls to serve as flexible

First-generation developers and users of the WEI Integrated Energy Systems Laboratory. 33 WELCOMEFAMILY

2016 Current Graduate & Undergraduate Students PhD students Mahima Gupta Dinesh Pattabiraman MS students Yujiang Wu Skyler Hagen Marc Petit Yang Xu Apoorva Athavale Di Han Michael Rios Steve Chang Yinghan Xu Dheeraj Bobba Philip Hart Andy Schroedermeier Calvin Cherry Ruonan Zhou Adria Brooks Ryoko Imamura Lee Shaver Cong Deng Yutong Zhu Pablo E. Castro-Palavicino Hao Jiang Adam Shea Jacob Dubie Le Chang Ju Hyung Kim Minhao Sheng Joseph Goldman Undergraduate Parikshith Channegowda Ramesh K. Govindarajan Ryan Knippel Yuying Shi students Zhe Chen Shang-Chuan Lee Timothy Slininger Mitchell Marks Gilsu Choi Woongkul Lee Kang Wang Narciso Marmolejo Muhammad Alvi Wooyoung Choi Silong Li Yukai Wang Peter Meyer Charles Duff Jiejian Dai Yingjie Li Yichao Zhang Casey Morris Zheng Gao Zhentao Du Jianyang Liu Junjian Zhao Will Plaxico Terrance Thurk Huthaifa M. Flieh Wenbo Liu Ruxiu Zhao Timothy Polom Jacob Free Kevin Frankforter Ashray Manur Bo Zhu Ricardo Ramirez Chad Davis Brent Gagas Seth McElhinney Guangqi Zhu Erik Schubert Baoyun Ge He Niu Boru Wang Aditya Ghule Hung-Yen Ou Yang Teng Wu

Grainger Power Engineering Award and Undergraduate Fellowships In 1997, The Grainger Foundation established a major award program for students who earn an undergraduate or graduate degree with a specialization in the field of electric power engineering in the University of Wisconsin–Madison College of Engineering. These awards are intended to reward highly qualified and motivated students who pursue programs of study in electric machines and drive systems, industrial motion control, power electronics, or electric power systems. More than 250 awards have been granted since 1997, and the majority of the graduate-degree recipients have been students in the WEMPEC program. Visit wempec.wisc.edu/803.htm for more details.

2016 Grainger Power Engineering Award Winners.

34 ALUMNI 1981 MS Jin Heung Chung — R.H. Lasseter 1987 PhD Hamdy M. Bahnassy* — N. Schmitz John P. Hoffman— D.W. Novotny Roy Steve Colby — D.W. Novotny Joseph D. Law — T.A. Lipo Eduard Muljadi — T.A. Lipo 1981 PhD John M. Loehrke — R.D. Lorenz Joseph O. Ojo — T.A. Lipo Mehrdad Ehsani* — N. Schmitz Richard F. Schiferl — T.A. Lipo Nathaniel Gunaratnam* — D.W. Novotny 1985 PhD Pradeep K. Sood — T.A. Lipo * Indicates already in ECE program; Daniel S. Kirschen — D.W. Novotny Li-Cheng Zai — T.A. Lipo became WEMPEC students in ’81 Timothy M. Rowan — T.A. Lipo Chu-Gen Wang — T.A. Lipo 1988 MS 1982 MS Kai Chi Lam — T.A. Lipo Timothy J. Kolb — D.W. Novotny 1986 MS Eric G. Mundt — R.D. Lorenz Timothy M. Rowan — T.A. Lipo Grant K. Garnett — R.D. Lorenz S. Y. Tam — R.H. Lasseter David A. Kaiser — T.A. Lipo Oliver Wilke — R.D. Lorenz 1982 PhD Jim D. Kershner — R.D. Lorenz K. Ahmed — T.A. Lipo Terrance M. Lettenmaier — D.W. Novotny 1988 PhD Dennis K. Schade — R.D. Lorenz Yen-Ren Liu — R.H. Lasseter 1983 MS Longya Xu — T.A. Lipo Donald S. Zinger — T.A. Lipo David M. Brod — D.W. Novotny Roy Steve Colby — D.W. Novotny 1986 PhD 1989 MS Isidoro Couvertier — D.W. Novotny H. Soebagio — T.A. Lipo Beena S. Acharya — D.M. Divan Takayoshi Matsuo — T.A. Lipo Kwa-Sur Tam — R.H. Lasseter William B. Dittman — T.A. Lipo Donald S. Zinger — T.A. Lipo Greg T. Jackson — R.D. Lorenz 1987 MS Brian K. Johnson — R.H. Lasseter 1984 MS Mark R. Bachhuber — R.D. Lorenz Vikram Kaura — D.W. Novotny Wallace H. Creer — T.A. Lipo Ivan R. Brouwer — R.D. Lorenz Patrick Michael Kelecy — R.D. Lorenz William J. Hunt — D.W. Novotny Robert A. Cook — R.D. Lorenz Lowell M. Rausch — D.M. Divan Benson Lee — R.H. Lasseter Mike B. Eberlein — R.D. Lorenz Shien-Yang Wu — D.M. Divan Eduard Muljadi — T.A. Lipo Patrick L. Jansen — D.W. Novotny Kamarudin Nordin — D.W. Novotny A. Reza Kashani — R.D. Lorenz 1989 PhD Mustansir Kheraluwala — D.M Divan. Leonard J. Bohmann — R.H. Lasseter 1985 MS Mark S. Kramer — T.A. Lipo Sheng-Ming Yang — R.D. Lorenz Leonard J. Bohmann — R.H. Lasseter K. Mathias Meyer — R.D. Lorenz Kwon C. Chang — T.A. Lipo Oliver D. Patterson — D.M. Divan Doug Van De Riet — R.D. Lorenz 35 WELCOMEFAMILY

A relaxing summer evening on the Memorial Union Terrace.

1990 MS Bhaskar Singh — T.A. Lipo Michael W. Degner — R.D. Lorenz Robert M. Cuzner — R.D. Lorenz James L. Skinner — T.A. Lipo Alexander Kurnia — D.M. Divan Kam Tim Hung — R.D. Lorenz Bernhard Werner — R.D. Lorenz J. Daniel Ruvalcaba — D.W. Novotny Christopher C. Jensen — T.A. Lipo Herman L. N. Wiegman — D.M. Divan Joel B. Wacknov — T.A. Lipo Karl W. Marschke — T.A. Lipo Ian Wallace — D.M. Divan Jim Nesbitt — D.W. Novotny 1991 PhD Patrick H. Nugent — R.D. Lorenz Mustansir Kheraluwala — D.M. Divan 1993 PhD Deborah R. Wolfson — R.D. Lorenz Joseph D. Law — T.A. Lipo Jonathan C. Boomgaarden — R.D. Lorenz Jiarong Zhou — R.H. Lasseter Peter B. Schmidt — R.D. Lorenz Jen-Ren Fu — T.A. Lipo Hamid A. Toliyat — T.A. Lipo Herbert Hess — D.M. Divan 1990 PhD Sasan Jalali — R.H. Lasseter Paulo R. Caldeira — T.A. Lipo 1992 MS Patrick L. Jansen — R.D. Lorenz Thomas G. Habetler — D.M. Divan Mark Cooper — R.D. Lorenz Feng Liang — T.A. Lipo Julio C. Moreira — T.A. Lipo Craig Johnson — R.D. Lorenz Longya Xu — T.A. Lipo Mark S. Rauls — D.W. Novotny 1994 MS Xingyi Xu — D.W. Novotny Scott W. Repplinger — T.A. Lipo Robb G. Anderson — R.D. Lorenz Diane E. Borgard — R.D. Lorenz 1991 MS 1992 PhD Po-Tai Cheng — D.M. Divan Craig Bonneville — R.D. Lorenz Ping Ping Dai — R.D. Lorenz William D. Grube — R.D. Lorenz Michael R. Buhl — R.D. Lorenz Brian K. Johnson — R.H. Lasseter Bradley J. Heeres — D.W. Novotny Craig M. Goshaw — R.D. Lorenz Yuefeng Liao — T.A. Lipo Stephen Hsien-Yuan Li — T.A. Lipo Ahmet Hava — T.A. Lipo Gary L. Skibinski — D.M. Divan Carl E. Martensson — R.H. Lasseter Sasan Jalali — R.H. Lasseter Giri Venkataramanan — D.M. Divan Andrew J. Meyer — R.D. Lorenz Ka Shu Ko — R.H. Lasseter Mohamed O.E. Mohamed — T.A. Lipo Douglas K. Maly — D.W. Novotny 1993 MS Steven A. Orth — R.D. Lorenz Moncef Moatemri — R.D. Lorenz Jeffrey Brozek— T.A. Lipo Kevin T. Ousdigian — R.D. Lorenz Norbert Niedhorn — R.D. Lorenz Jonathan Carpenter — R.H. Lasseter Tracy L. Reineking — R.D. Lorenz Shawn L. Peterson — R.D. Lorenz Shaotang Chen — T.A. Lipo Andrew J. Shakal — T.A. Lipo Mina M. Rahimian — T.A. Lipo Hassan Cherradi — D.M. Divan David T. Willett — R.D. Lorenz Matthew J. Corley — R.D. Lorenz 36 1994 PhD 1997 MS Jeffrey J. Shutter— R.D. Lorenz Irfan Alan — T.A. Lipo Metin Aydin — T.A. Lipo Pinet Sriyotha — R.D. Lorenz Chingchi Chen — D.M. Divan Alex M. De Broe — T.A. Lipo John W. Taylor — R.D. Lorenz Patrick Michael Kelecy — R.D. Lorenz Carl Dister — R.D. Lorenz Neil H. Tice — R.D. Lorenz Takayoshi Matsuo — T.A. Lipo Darin A. Engelhart — R.D. Lorenz Chih Ling Han — R.D. Lorenz 1998 PhD 1995 MS David Hyypio — T.A. Lipo William E. Brumsickle — D.M. Divan Saviz Artang — R.H. Lasseter Ekrem Kayikci — R.D. Lorenz Braz de Jesus Cardoso Filho — T.A. Lipo Marc Artmeyer — R.D. Lorenz Ahmed Mahmoud — R.D. Lorenz Michael W. Degner — R.D. Lorenz Carl H. Benker — D.M. Divan Kevin L. Payette — R.D. Lorenz Ahmet Hava — T.A. Lipo William E. Brumsickle — D.M. Divan Jerry A. Putman — R.D. Lorenz Gautam Sinha — T.A. Lipo Gus Collins — R.D. Lorenz James E. Walters — R.D. Lorenz Ana V. Stankovic — T.A. Lipo Douglas A. Dallmann — K. Shenai Craig R. Winterhalter — R.D. Lorenz Lance P. Haines — R.D. Lorenz 1999 MS Hagen Jahn — R.D. Lorenz 1997 PhD Eric L. Benedict — T.A. Lipo Michael C. Klabunde — T.A. Lipo Mustafa A. Al-Saffar— T.A. Lipo Mark G. Dollevoet — R.D. Lorenz David P. Leary — R.H. Lasseter Clark Hochgraf — R.H. Lasseter Michael C. Harke — R.D. Lorenz Hsin-Hua Li — T.A. Lipo Alexander Julian — T.A. Lipo Jun Kikuchi — T.A. Lipo Alfredo Munoz-Garcia — D.W. Novotny Hsin-Hua Li — T.A. Lipo (co-advisor) Hyunbae Kim — R.D. Lorenz Nicholas J. Nagel — R.D. Lorenz Xiaogang Luo — T.A. Lipo Sigurd Ovrebo — R.D. Lorenz Gregory J. Rajala — R.D. Lorenz Mohamed O.E. Mohamed — T.A. Lipo Oliver Peterson — T.A. Lipo Yihchih Shern — R.H. Lasseter Michael J. Ryan — R.D. Lorenz Mark C. Sevey — R.D. Lorenz Chiping Sun — D.W. Novotny Michael Shannon — T.A. Lipo Steven H. Walker — R.D. Lorenz 1998 MS Weizhong Tang — R.H. Lasseter Yanhong Xue — T.A. Lipo Robert B. Bettendorf — R.D. Lorenz Dennis Borowy — T.A. Lipo 1999 PhD 1995 PhD Marcela Gonzalez — R.D. Lorenz Po-Tai Cheng — D.M. Divan Mehmet Aydemir — T.A. Lipo Laureen Hellouin — R.D. Lorenz Roy I. Davis — R.D. Lorenz Mukul Chandorkar — D.M. Divan Kurt I. Jaeger — R.D. Lorenz Vinod John — T.A. Lipo Shaotang Chen — T.A. Lipo Frederick Kieferndorf — D.W. Novotny Jian Luo — T.A. Lipo Keith Klontz — D.W. Novotny Chad M. Licht — R.D. Lorenz Madhav D. Manjrekar — T.A. Lipo Nasser H. Kutkut — D.M. Divan Wei Liu — R.D. Lorenz Alfredo Munoz-Garcia — T.A. Lipo Yifan Zhao — T.A. Lipo Frank Phlippen — R.D. Lorenz Nicholas J. Nagel — R.D. Lorenz Aakash Rao — T.A. Lipo Bulent Sarlioglu — T.A. Lipo 1996 MS Herman L. N. Wiegman — R.D. Lorenz Mitchell Bradt — R.H. Lasseter Steven Fredette — D.M. Divan Vivek Karandikar — R.D. Lorenz Weihua Ma — D.W. Novotny Scott M. Manson — R.H. Lasseter Sameer P. Pendharkar — K. Shenai Dinyu (Dan) Qin — T.A. Lipo Tod R. Tesch — R.D. Lorenz Malay Trivedi — K. Shenai 1996 PhD Long–Jang Li — R.D. Lorenz Yue Li — T.A. Lipo David R. Seidl — R.D. Lorenz

Planting a memorial tree at the Nanjing University of Aeronautics and Astronautics (NUAA). 37 WELCOMEFAMILY

2003 PhD Ashish Bendre — G. Venkataramanan Subhashish Bhattacharya — G.Venkataramanan Rick Kieferndorf — T.A. Lipo Lixiang Wei — T.A. Lipo Brian Welchko — T.A. Lipo 2004 MS Travis Bashaw — T.A. Lipo James A. Buerosse — R.D. Lorenz Jeffrey J. Connors— R.D. Lorenz Chirdpong Deelertpaiboon — R.H. Lasseter David K. Farnia — R.D. Lorenz Raahul Hassan — R.H. Lasseter Dong Gee Hong — R.D. Lorenz Professor Lorenz with Visiting Scholars. Jae-Hyuck Kim — T.M. Jahns Paul Mezs — T.M. Jahns Jody J. Nelson — G. Venkataramanan Jonathan Nord — G. Venkataramanan 2000 MS Erick L. Oberstar — R.D. Lorenz Eric A. Carter — R.D. Lorenz Shihong Park — T.M. Jahns Nitin R. Patel — R.D. Lorenz Jennifer Chung — R.D. Lorenz Daniel M. Saban — G. Venkataramanan Devang Sachdev — G. Venkataramanan Mark A. Ferderer — R.D. Lorenz Eric L. Schlevensky — R.D. Lorenz Mark A. Spickard — R.D. Lorenz Stephen Fusi — T.A. Lipo Hong-Yue (Ray) Tang — R.D. Lorenz Enrique Ledezma — T.A. Lipo 2002 PhD Jun Kikuchi — T.A. Lipo Jongsoo Lim — R.D. Lorenz 2004 PhD Jaehyung Park — T.A. Lipo Renato Lyra — T.A. Lipo Alessandro Moreira — T.A. Lipo Metin Aydin — T.A. Lipo John H. Sorebo — R.D. Lorenz Eric L. Benedict — T.A. Lipo Clarissa M. Thomas — R.D. Lorenz Velimir Nedic — T.A. Lipo Ronghai Qu — T.A. Lipo Sib Chakrabarti — T.M. Jahns Juan Tapia — T.A. Lipo Hyunbae Kim — R.D. Lorenz 2000 PhD Shihong Park — T.M. Jahns Melik Dolen — R.D. Lorenz Yong-Sug Suh — T.A. Lipo Dinyu (Dan) Qin — T.A. Lipo 2003 MS Theodore P. Bohn — R.D. Lorenz Damir Zarko — T.A. Lipo Ian P. Brown — R.D. Lorenz 2001 MS 2005 MS Nathan Harris — T.M. Jahns Michael F. Cash — R.D. Lorenz Shreesha Adiga Manoor — R.D. Lorenz Ji Li — G. Venkataramanan Patrick Flannery — G. Venkataramanan Sandeep Bala — G. Venkataramanan David Oteman — T.A. Lipo Yusuke Fukuta — G. Venkataramanan Felix B. Bierbaum — R.D. Lorenz Allen Windhorn — R.H. Lasseter Christian Hareide — R.D. Lorenz Jason J. Hartwig — R.D. Lorenz James W. Claerbout — R.D. Lorenz 2001 PhD Jesse Krase — T.A. Lipo Neal D. Clements — G. Venkataramanan Christopher J. Courtney — R.D. Lorenz Barbara H. Kenny — R.D. Lorenz Won-Kyoung Lee — T.M. Jahns Kleber Facchini — T.A. Lipo Taiyou Yong — R.H. Lasseter Erik R. Olson — R.D. Lorenz Wen Ouyang — T.A. Lipo Derek R. Hochstetler — R.D. Lorenz 2002 MS Trine Pande-Rolfsen — R.D. Lorenz Nicolai Mortensen — G. Venkataramanan Anusheel Nahar — R.D. Lorenz Gary Buckingham — R.H. Lasseter Charles Romenesko — R.D. Lorenz Jeffrey Nasadoski— T.M. Jahns Ho Chan — T.M. Jahns Daniel M. Saban — R.D. Lorenz Mark Putnam — G. Venkataramanan Ayman El-Refaie — T.M. Jahns Vijay Srinivasan — G. Venkataramanan Bin Shi — G. Venkataramanan Christoph Giebeler — R.D. Lorenz Jackson Wai — T.M. Jahns Fatou Thiam — A. Muetze Christopher Houle — R.H. Lasseter Yue Xu — R.D. Lorenz Ricky J. White — T.M. Jahns Nathan Lebens — G. Venkataramanan Hao Howard Zhang — T.A. Lipo Dustin A. Murdock — R.D. Lorenz 38 2005 PhD 2008 MS 2011 MS Ayman EL-Refaie — T.M. Jahns Seok-Hee Han — T.M. Jahns Joshua Brittingham — T.M. Jahns Mahesh Illindala — G. Venkataramanan Bjorn Heinbokel — R.D. Lorenz Christopher Farr — T.M. Jahns Hongrae Kim — T.M. Jahns Robert W. Hejny — R.D. Lorenz Kyle Hanson — R.D. Lorenz Paolo Piagi — R.H. Lasseter Daniel C. Ludois — G. Venkataramanan Jonathan Hoffman— R.D. Lorenz Tod R. Tesch — R.D. Lorenz Mark Michiels — G. Venkataramanan Zachary Hurst — R.D. Lorenz Dan Nowak — G. Venkataramanan Mohsen Karbassian — G. 2006 MS Ryan D. Nowak — R.D. Lorenz Venkataramanan Jei-Hoon Baek — T.M. Jahns Ben Sykora — T.M. Jahns Phil Kollmeyer — T.M. Jahns Daniel Bocci — T.M. Jahns Travis M. Thul — R.D. Lorenz Jonathan Lee — G. Venkataramanan Vishram Deshpande — G. Christopher M. Wolf — R.D. Lorenz James McFarland — T.M. Jahns Venkataramanan Francesco Quattrone — R.D. Lorenz Christoffer Fox— G. Venkataramanan 2008 PhD Mehdi Rexha — T.M. Jahns Joshua Kagerbauer — T.M. Jahns Sandeep Bala — G. Venkataramanan Jerhod Smithback — T.M. Jahns Nicholas Lemberg — T.A. Lipo Patrick Flannery — G. Venkataramanan Daniel R. Luedtke — R.D. Lorenz Kum-Kang Huh — R.D. Lorenz 2011 PhD Andrew A. Rockhill — T.A. Lipo Ekrem Kayikci — R.D. Lorenz Daniel Ludois — G. Venkataramanan Ying Chin Tan — A. Muetze Shashank Krishnamurthy — T.M. Jahns Patrick Schneider — R.D. Lorenz Kevin J. Van Kammen — R.D. Lorenz Kevin Lee — T.M. Jahns/T.A. Lipo Jagadeesh Tangudu — T.M. Jahns Nathan T. West — R.D. Lorenz Marsha L. Walters — R.D. Lorenz Jennifer Vining — G. Venkataramanan Yang Wang — T.A. Lipo 2006 PhD 2009 MS Christopher Wolf — R.D. Lorenz Jonathan Bird — T.A. Lipo Seth M. Avery — R.D. Lorenz Shih-Ching Yang — T.A. Lipo Michael C. Harke — R.D. Lorenz J. Matthew Burton — R.D. Lorenz Erik R. Olson — R.D. Lorenz Micah Erickson — T.M. Jahns 2012 MS Daniel M. Saban — T.A. Lipo Shiv Gupta — G. Venkataramanan Alden Alviar — G. Venkataramanan Bingsen Wang — G. Venkataramanan William R. Kranz — G. Venkataramanan Brian Bradley — R.D. Lorenz Jae Suk Lee — R.D. Lorenz Gilsu Choi — T.M. Jahns 2007 MS Natee Limsuwan — R.D. Lorenz Paul Erdtmann — R.D. Lorenz Korwin J. Anderson — R.D. Lorenz Matt Suprenant — G. Venkataramanan Nicholas Graan — R.D. Lorenz Nathaniel Brown — T.M. Jahns Jagadeesh Tangudu — T.M. Jahns Bahaa Eldeen Hafez — R.D. Lorenz Bee-See Heng — A. Muetze Nidhishri Tapadia — R.D. Lorenz Emily Holtgrave — T.M. Jahns Steven Hoskins — G. Venkataramanan Corey Wagner — G. Venkataramanan Jin Li — Y. Han Scott E. McPherren — R.D. Lorenz Benjamin G. Willis — R.D. Lorenz Pedro Melendez-Vega — G. Justin K. Reed — G. Venkataramanan Venkataramanan Patrick E. Schneider — R.D. Lorenz 2009 PhD Ken Mennen — T.M. Jahns Robert S. Schneider — R.D. Lorenz Ian P. Brown — R.D. Lorenz Neil Pande — G. Venkataramanan Kee Ho Shin — T.A. Lipo Steve J. Fredette — G. Venkataramanan Dhaval Patel — R.D. Lorenz Matthew L. Spencer — R.D. Lorenz Dejan Raca — R.D. Lorenz Mehdi Rexha — T.M. Jahns Daniel Springmann — T.M. Jahns Darren D. Tremelling — T.A. Lipo Zobair Roohani — G. Venkataramanan Jo Sroda — G. Venkataramanan Caleb Secrest — R.D. Lorenz Darren Tremelling — T.A. Lipo 2010 MS Jerhod Smithback — T.M. Jahns Donald Truettner — G. Venkataramanan Adam E. Anders — R.D. Lorenz Andrew Specht — T.M. Jahns Jennifer Vining — A. Muetze Wenying Jiang — T.M. Jahns Prabhdeep Virk — T.M. Jahns Bill Walters — G. Venkataramanan Larry W. Juang — T.M. Jahns/R.D. Lorenz Jiyao Wang — Y. Han Sainan Xue — R.D. Lorenz Megan Mallette — G. Venkataramanan Wanjun Zhang — T.M. Jahns Sean C. Zeith — R.D. Lorenz Timothy R. Obermann — R.D. Lorenz Yichao Zhang — T.M. Jahns Huimin Zhou — Y. Han 2007 PhD 2010 PhD Fernando Manicilla-David Neal D. Clements — G. Venkataramanan — G. Venkataramanan Seok-Hee Han — T.M. Jahns Wen Ouyang — T.A. Lipo Patel B. Reddy — T.M. Jahns 39 WELCOMEFAMILY

2012 PhD 2013 PhD Josh Parkin — T.M. Jahns Korwin Anderson — G. Rob Cuzner — G. Venkataramanan Michael Rios — G. Venkataramanan Venkataramanan/T.A. Lipo Jae Suk Lee — R.D. Lorenz Michael Salata — T.M. Jahns Micah Erickson — T.M. Jahns Seung-Hwan Lee — R.D. Lorenz Ken Scidmore — T.M. Jahns Di Pan — T.A. Lipo Natee Limsuwan — R.D. Lorenz Yuying Shi — R.D. Lorenz Andrew Rockhill — T.A. Lipo John Wernette — T.M. Jahns 2014 MS Kenton Yeates — Y. Han 2013 MS Syed Akhtar — R.D. Lorenz Bo Zhu — Y. Han James Brandt — R.D. Lorenz Apoorval Athavale — R.D. Lorenz Cameron Brown — B. Sarlioglu James Dameron — T.M. Jahns 2014 PhD Ryan Calder — R.D. Lorenz Donny Davis — G. Venkataramanan Patricio Mendoza Araya — Tim Florencki — Y. Han Yeysy Davis — G. Venkataramanan G. Venkataramanan Brent Gagas — R.D. Lorenz Bryan Dow — R.D. Lorenz Wenying Jiang — T.M. Jahns Aditya Ghule — R.D. Lorenz Tyler Duffy— R.D. Lorenz Larry Juang — T.M. Jahns Phil Hart — T.M. Jahns Kevin Frankforter — T.M. Jahns Justin Reed — G. Venkataramanan Mark Kringle — R.D. Lorenz Eric Funk — T.M. Jahns Chen-Yen Yu — R.D. Lorenz Steven Millett — T.M. Jahns Tyler Graf — R.D. Lorenz Seun Guy Min — B. Sarlioglu Peter Green — T.M. Jahns 2015 MS Vlatko Miskovic — T.M. Jahns Di Han — B. Sarlioglu Juan Arango — T.M. Jahns He Niu — R.D. Lorenz Ju Hyung Kim — B. Sarlioglu Efrem Ayichew — R.D. Lorenz Christopher Rousset — T.M. Jahns Jonathan Kunkle — T.M. Jahns Chris Bouxsein — R.D. Lorenz Justin Thorpe — T.M. Jahns Shang-Chuan Lee — R.D. Lorenz Tyler Braun — R.D. Lorenz Subbarao Varigonda — R.D. Lorenz Silong Li — B. Sarlioglu Wooyoung Choi — B. Sarlioglu Chi-Ming Wang — R.D. Lorenz Ye Li — Y. Han Jay Dommershausen II — T.M. Jahns Yukai Wang — R.D. Lorenz Yingjie Li — B. Sarlioglu Nicholas Gray — R.D. Lorenz Benjamin Watson — T.M. Jahns Austin Nelson — T.M. Jahns Ezekiel Holliday — G. Venkataramanan Paul White — R.D. Lorenz Wei-Quan Raymond Ng — T.M. Jahns Ryan Jwanouskos — R.D. Lorenz Junjian Zhao — T.M. Jahns Jukkrit Noppakunkajorn — B. Sarlioglu Josh Lawson — R.D. Lorenz Anuradha Ogale — B. Sarlioglu Jianyang Liu — T.A. Lipo David Loken — G. Venkataramanan Gissel Morales — T.M. Jahns Nick Norppa — T.M. Jahns Patrick Ozimek — R.D. Lorenz Craig Poulin — T.M. Jahns Sam Reittinger — R.D. Lorenz Skyler Shatkin — G. Venkataramanan Minhao Sheng — R.D. Lorenz Diego Valencia — G. Venkataramanan Brian Veik — R.D. Lorenz Todd Velde — R.D. Lorenz Kang Wang — R.D. Lorenz Jiyao Wang — Y. Han Ruxiu Zhao — R.D. Lorenz 2015 PhD Seth Avery — R.D. Lorenz Phil Kollmeyer — T.M. Jahns Ye Li — Y. Han James McFarland — T.M. Jahns Caleb Secrest — R.D. Lorenz KeeHo Shin — T.A. Lipo Wanjun Zhang — T.M. Jahns WEMPEC emeritis group. 40 VISITING PROFESSORS

Kazimierz Adamiak — Kielce University of Technology, Kielce, Poland (1988–89) Khaled E. Addoweesh — University of King Saud, Riyadh, Saudi Arabia (1993–94) Jin-Woo Ahn — Kyungsung University, Pusan, Korea (1998–99) Hirofumi Akagi — Okayama University, Okayama, Japan (1995–96) Kan Akatsu — Tokyo University of Agriculture and Technology, Japan (2005–08) Mats Alakula — Lund Institute of Technology, Lund, Sweden (2000) A pleasant afternoon outing on Lake Mendota with Visiting Professor Gianmario Pellegrino. Nihan Altintas — Yildiz Technical University, Istanbul, Turkey (2015–16) Fatih Evran — Gazi University, Ankara, Min-Seok Joo — Yonsei University, Seoul, Mehmet Aydemir — Gazi University, Turkey (2013–14) Korea (2000–02) Ankara, Turkey (2001–02) Shuhua Fang — Southeast University, Man-Woun Kang — Taejon National Michael Barnes — University of Nanjing, China (2013–15) University of Technology, Taejon, Korea Manchester, Manchester, United Kingdom Ying Fan — Southeast University, Nanjing, (1997–98) (2006–07) China (2014–15) Ahmet Karaarslan — Afyon Kocatepe Alberto Bellini — Universita’ di Parma, Eisenhawer de Moura Fernandes — University, Afyon, Turkey (2013–14) Parma, Italy (2000) Federal University of Campina Grande, Faeka Khater — Cairo University, Cairo, Brazil (2012–14) Egypt (1993) Francesco Benzi — University of Pavia, Pavia, Italy (1985–86) Xinghe Fu — Southeast University, Byung Taek Kim — Kunsan National Nanjing, China (2014–15) University, Jeonbuk, Korea (2012–14) Fabio Capponi — “La Sapienza,” Rome, Italy (2003–04) Dawei Gao — Tshingua University, Dong-Hee Lee — Kyungsung University, Beijing, China (2011–13) Busan, Korea (2012–13) Lei Chen — Harbin Institute of Technology (2015–16) Guillermo Garcia — National University Dae-‐kyong Kim — Sunchon National of Rio Cuarto, Argentina (1996–98) University, Suncheon, Korea (2014–15) Yaow Ming Chen — National Taiwan Dieter Gerling — University of Federal Gi-Taek Kim — Kangwon National University, Taipai, Taiwan (2011–12) Defense, Munich, Germany (2004) University, Chunchon, Korea (1994–96) Ming Cheng — Southeast University, Zhenyan Hao — Nanjing University of Gyu-Sik Kim — University of Seoul, Nanjing, China (2011) Aeronautics and Astronautics, Nanjing, Korea (2003–05) B.H. Cho — Korean Advanced Institute China (2014–15) Heung-Guen Kim — Kyung-pook of Science and Technology (KAIST), Seoul, D. Grahame Holmes — Monash National University, Taegu, Korea Korea (1989–90) University, Melbourne, Australia (1988–89, (1990–91) Nam-Sup Choi — Yosu National 1994–95, 2005–07) Jong-Gyeum Kim — Gangneung Wonju University, Cheonnam, Korea (1999–2000) Sun-Ki Hong — Hoseo University, National University, Gangwon, Korea Alfio Consoli— University of Catania, Chung-Nam, Korea (1999–2000, 2008–09) (2012–14) Catania, Italy (1985–86) Surong Huang — Shanghai University Tae Heoung Kim — Gyeongsang Shuye Ding — Harbin University of of Technology, Shanghai, China (1994–96, National University, Gyeoungnam, Korea Science and Technology, China (2013–14) 1998–2000, 2001) (2011–14) Seshagiri Roa Doradla — India Institute Kenichi Iimori — Kagoshima University, Youn Hyun Kim — Hanbat National of Technology, Kanpur, India (1994–95) Kagoshima, Japan (1997–98) University, Daejeon,Korea (2011–13) Levent Eren — Izmir University of Borislav Jeftenic — University of Liviu Kreindler — University of Economics, Balcova, Turkey (2014–15) Belgrade, Belgrade, Yugoslavia (1990) Bucharest, Bucharest, Romania (1991–92) 41 WELCOMEFAMILY

Akira Kumamoto — University in Yoshihiro Murai — Gifu University, Gifu, Peter Rasmussen — Aalborg University, Osaka, Japan (March 1987–88)Viacheslav Japan (1987–88, 1991, 1994–95) Aalborg, Denmark (2008) Kuznetsov — Moscow Power Engineering Takashi Nagano — Miyakonojo National Luiz Antonio de Souza Ribeiro — Institute, Moscow, Russia (1993–94) College of Technology, Miyakonojo, Japan Centro Federal de Educacao Tecnologica Byung-il Kwon — Hanyang University, (2005–06) do Maranhao, Brazil (2004–06) Korea (2001–02, 2008–09) Istvan Nagy — Technical University of Sandeep Roy — Washington State Joseph Law — University of Idaho, Budapest, Budapest, Hungary (1991–92) University, Pullman, WA, USA (2008–09) Moscow, Idaho (1983–84) Sreeramulu Naidu — Federal University Leonid Rybitsky — Riga Polytechnic Gerard Ledwich — University of of Paraiba, Campina Grande, Brazil Institute, Riga, Latvia (1986–87) Queensland, Brisbane, Australia (1991–92) (2000–01) Chandur T. Sadarangani — Royal Cheol-Gyun Lee — Dong-Eui University, Syed A. Nasar — University of Kentucky, Institute of Science Technology, KTH, Pusan, Korea (2002–03) Lexington, Kentucky (1984, 1989) Stockholm, Sweden (2003–04) Dong Choon Lee — Yeungnam Eui-Cheol Nho — National Susan Jul-Ki Seok — Yeungnam University, University, Korea (2004–05) University of Pusan, Pusan, Korea (1996–98) DaeDong, Korea (2008–09) Dong-Hee Lee — Kyungsung University, Ademir Nied — Santa Catarina State William Shepherd — University of Busan, Korea (2011–12) University, Joinville, Brazil (2015 — 16) Bradford, England (1985) Ju Lee — Hanyang University, Seoul, Robert Nilssen — Norwegian University Shoji Shimomura — Shibaura Institute Korea (2005–07) of Science and Technology, Norway of Technology, Tokyo, Japan (2007–08) Hao Li — China University of Mining and (2004–05) Hwi-Beom Shin — Gyeongsang National Technology, XuZhou, China (2014–15) Shoji Nishikata — Tokyo Denki University, Gyeongnam, Korea (2000–02) Peng Li — North China Electric Power University, Tokyo, Japan (1987–88) Katsuji Shinohara — Kagoshima University, Baoding, China (2007–08) Haruhiko Nishiyama — Tokyo University, Kagoshima, Japan (1987) Fan Liao — Dalian Railway School of Metropolitan University, Tokyo, Japan Edison da Silva — Federal University of Technology, Dalian, China (1987–88) (1994–95) Paraiba, Brazil (1990–91, 1994–96) Shir-Kuan Lin — National Chiao Tung Kokichi Ogawa — Oita University, Oita, Kwang M. Son — Dong-Eui University, University, Hsinchu, Taiwan (1995–96) Japan (1992–93) Korea (2001–02) Robin Lisner — Monash University, Gustaf Olsson — Lund Technical Seung-Ho Song — Chonbuk National Australia (2004) University, Lund, Sweden (1993–95) University, Korea (2004–05) Jiaxi Liu — Harbin Institute of Antonio Ometto — L’Aquila University, Wen L. Soong — University of Adelaide, Technology, China (2014–15) L’Aquila, Italy (1992–93) Adelaide, Australia (2006–07) Tian-Hua Liu — National Institute of Vlado Ostovic — University of Osijek, Gorazd Stumberger — University of Technology, Taiwan, China (1990–92) Osijek, Yugoslavia (1985–86, 1987) Maribor, Maribor, Slovenia (2001) Chao Lu — Tsinghua University, Beijing, Jun Oyama — Nagasaki University, Yongsug Suh — Chonbuk National China (2011–12) Nagasaki, Japan (1987–88) University, Jeonju, Korea (2016–17) Yumin Lu — Guangzi University, Antonio Feltrin Padilha — FEIS-UNESP, Seung-Ki Sul — Seoul National Nanning, China (2014–15) Ilha Soteira, Brazil (1995–97) University, Seoul, Korea (1995–96) Seyed Madani — University of Puerto Seung Kyu Park — Changwon National Yong-Tae Sul — Hoseo University, Rico, Pureto Rico (2004, 2005) University, Korea (2003–04) Chungnam, Korea (1994–96) Udaya Madawala — University of Gianmario Pellegrino — Politecnico di Dan Sun — Zhejian University, Auckland, Auckland, New Zealand (2008) Torino, Italy (2013–14) Hangzhou, China (2009–11) Sergio Martinez — University of Madrid, Astrid Petterteig — University of Lizhi Sun — Harbin Institute of Spain (2010–12) Trondheim, Netherlands (1992) Technology, Harbin, China (2007) Jan A. Melkebeek — Free University of Dionisio Ramírez Prieto — Polytechnic Isao Takahashi — Technological Gent, Belgium (1982) University of Madrid, Spain (2011–14, 2015) University of Nagaoka, Japan (1981–82) Wellington Santos Mota — Federal Francesco Profumo — University of Chengde Tong — Harbin Institute of University of Paraiba, Brazil (1995–98) Torino, Torino, Italy (1986–88) Technology, China (2015–16) Alfredo Munoz-Garcia — Politecnical Supachai Puengsungwan — King Nikolai P. Trusov — The Urals State Naval Academy, Chilean Navy, Chile (2005) Mongkut’s University of Technology, Technical University, Ekaterinburg, Russia Thonbury, Thailand (2003–04) (1995–96) 42 Anibal Valenzuela — University of Concepción, Concepción, Chile (1998–99) Aimeng Wang — North China Electric Power University, Beijing, China (2006. 2007–08, 2009) Bulai Wang — Shanghai Maritime University, Shanghai, China (2007–08) Cai Wei — Harbin Institute of Electrical Technology, Harbin, China (1994–96) Peter Wolfs — University of Central Queensland, Queensland, Australia (1993) Shaopeng Wu — Harbin Institute of Technology, China (2013–15) Jiang Xintong — Heilongjiang Bayi Agricultural University, Daqing, China (2013–15) Aide Xu — DaLian Maritime University, DaLian, China (2012–14) Zheng Yu Xue — DaLian Maritime Professor Jahns at the grill during the fall picnic with Visiting Professor Shuhua Fang. University, DaLian, China (2011–13) Xiangwu Yan — North China Electric Power University, Baoding, China RESEARCH ASSOCIATES AND POST-DOCS (2008–09) Masoud Barakati — University of Axel Mertens — Technical University of Yanjun Yu — Harbin Institute of Waterloo, Waterloo, Canada (2009–10) Aachen, Aachen, Germany (1989–90) Technology, China (2014–15) Mustafa Baysal—Yildiz Technical Hassan Nikkhajoei — University of Firuz Zare — Mazandaran University, University, Istanbul, Besiktas, Turkey Toronto, Toronto, Canada (2009) Australia (2005–06) (2009–12) Hiroyuki Nogawa — Fuji Electric Co. Wen Zhang — Shandong University, Vladimir Blasko — Power Elect. Ltd., Matsumoto, Japan (2013–15) Jinan, China (2008–09) & Automatic Control Dept. of Peter Steimer — ABB Industrie AG, Turgi, Xinghua Zhang — Nanjing University of Electrotechnical Institute Rade Koncar, Switzerland (1999–2000) Technology, Nanjing, China (2008–09) Yugoslavia (1988–89) Lizhi Sun — Harbin Institute of Zhouran Zhang — Nanjing University, Gerd Bramerdorfer — Johannes Kepler Technology, Harbin, China (2007–09) Nanjing, China (2011–14) University Linz, Austria (2016) Seung-Ki Sul — Seoul National Ping Zheng — Harbin Institute of Fernando Briz del Blanco — University University, Seoul, Korea (1986–88) Technology, Harbin, China (2007–08) of Oviedo, Gijon, Spain (1996–97) Pierluigi Tenca — Siemens AG, Erkuan Zhong — Hainan University, Jie Chen — Beijing Jiaotong University, Transportation Systems, Erlangen, Hainan, China (1991–92) Beijing, China (2014–15) Germany (2003–05) Li Zhou — Nanjing University of Rik De Doncker — Fulbright Scholar Pierré Vadstrup — Grundfos A/S, Information Science and Technology, from Katholieke Universiteit-Leuven, Bjerringbro, Denmark (2003) Nanjing, China (2013–15) Leuven, Belgium (1986–88) André Veltman — University of Xiaomin Zhou — University of Science & Bashir Mahdi Ebrahimi — University of Eindhoven, the Netherlands, (1994–95) Technology, Beijing, China (2011–13) Tehran, Tehran, Iran (2012–13) Haiping Xu — Institute of Electrical Jian Guo Zhu — University of Albert Esser — Technical University of Engineering, Beijing, China (2008–09) Technology, Sydney, Australia (2010) Aachen, Aachen, Germany (1992–94) Li Zhu — Shanghai Jiao Tong University, Zi-Qiang Zhu — University of Sheffield, Takashi Fukushige — Nissan Research Shanghai, China (2010–11) Sheffield, United Kingdom (2007–08) Center, Atsugi, Japan (2011-14) Asghar Abedini — University of Tehran, Sung-Hoi Huh — Korea University, Seoul Tehran, Iran (2009–10) Korea (2005–07) 43 WELCOMEFAMILY

Professor Lipo reunited with former Chinese graduate students in Wuhan, China

VISITING SCHOLARS

Sunil Gamini Abeyratne — Gifu Sobhi Barg — University of Oviedo, Gijón, Seo-Geon Chang — LG Electronics University, Gifu, Japan (1992–95) Spain (2014–15) Systems Co. Ltd., Kyungki-Do, Korea El-Sayed Mohamed Ahmed — Peace Jamaica Barnette — North Carolina A & (1997–98) Fellowship Trainee, Egypt (1992–95) T, USA (2004, 2005) Xiaomeng Cheng —Tsinghua University, Maddelena Aime — University of Milan, Lennart Baruschka — University of Beijing, China (2009–10) Italy (1997–98) Hannover, Hannover, Germany (2007) Edward Chikuni — University of Pier Albano — University of Bologna, Flemming Bendixen — Grundfos, Zimbabwe, Harare, Zimbabwe (1996–97) Bolgna, Italy (2000–01) Denmark (2002) Sung-Joon Cho — Hyundai Heavy Mario Angiulli — University Politecnico, Stefen Bernet — Technical University of Industries Co. Ltd, Gyeonggido, Korea Milano, Italy (1999–2000) Ilmenau, Ilmenau, Germany (1995–96) (2006–07) Guillermo Ramirez Arias — University of Claudio Bianchini — Universita di Miroslav Chomat — Academy of Concepción, Chile (2011–12) Modena e Reggio Emilia, Reggio Emilia, Sciences of the Czech Republic, Czech Marc Artmeyer — Technical University of Italy (2008) Republic (1999–2000) Aachen, Aachen, Germany (1994–95) Matthias Biskoping — AIX Control Yong-Ho Chung — Goldstar Industrial Andreas Averberg — University of GmbH/ISEA, Eslohe, Germany (2008–09) Systems Company, Ltd., Kyngki-Do, Korea Hannover, Hannover, Germany (2009) Ayalew Biyadgie — University of Oviedo, (1994–96) Gamal Abdel F. Morad Azzam — Peace Spain (2016) Mauricio Beltrao de Rossiter Correa — Fellowship Trainee, Egypt (1992–93) Barbara Boazzo — Politechnic University Universidade Federal de Campina Grande, Brazil (2001–02) Quntao An — Harbin Institute of of Torino, Italy (2012–14) Technology, China (2009–10) Giovanni Bottiglieri — University of Fabio Crescimbini — University of Rome “La Sapienza,” Rome, Italy (1986) Apoorva Athvale — Indian Institute of Catina, Italy (2003) Technology, Hyderabad, India (2010) Andreas Broesse — Technical University Carlos Martínez Diez — University of Oviedo, Gijón, Spain (2013–14) Emrullah Aydin — Gazi University, of Aachen, Aachen, Germany (1996) Ankara, Turkey (2012–13) Bernd Cebulski — Technical University of Shichuan Ding — Anhui University, Hefei, China (2014–15), (2015-16) Noor Baloch — Yaskawa Electric Corp., Chemnitz, Chemnitz, Germany (1996–97) Kitakyushu, Japan (2014–15) (2015) Emrah Cetin — Erciyes Universitesi Shri Dixit — Microprocessor Application Muhendslik Fakutest, Kayseri, Turkey Engineering Center, University of Pune, (2015–16) India (1988–90) 44 Marc Dokus — Leibniz University, Lutz Gutenberg — RWTH Aachen Takushi Jimichi — Tokyo Institute of Hannover, Germany (2016) University, Aachen, Germany (2008–09) Technology, Tokyo, Japan (2007–08) Vaibhav Donde — University of Illinois, Hilmi Gurleyen — Yildiz University, Malte John — Leibniz University Urbana-Champagne, Illinois (2004) Istanbul, Turkey (2015–16) Hannover, Germany (2013–14) Bo Dong — Tsinghua University, Beijing, Seo Gyu-Seok — Kyungpook National Neils Jorgenssen — Denmark (1993–94) China (2010–12) University, Daegu, Korea (2008) Taeyoung Jyung — Kyungpook National Dushan Drevensek — University of Christoph Hackl — Technical University University, Kyungpook, South Korea Maribor, Maribor, Slovenia (2000–01) of Munich, Germany (2003) (2007–08) Wei Du — Tsinghua University, Beijing, Makoto Hagiwara — Tokyo Institute of Shingo Kato — Honda R&D Company, China (2012–14) Technology, Tokyo, Japan (2004) Saitama, Japan (2005–07) Deng Duo — Anson Iron and Steel Co., Christian Hareide — Norwegian Takashi Kato — Nissan Research Center, China (1983–86) University of Science and Technology, Kangawa, Japan (2010–12) Bashir Ebrahimi — University of Tehran, Trondheim, Norway (2002–03) Christian Kaufmann — Technical Iran (2013–14) Jan Hasenauer — University of Stuttgart, University of Ilmenau, Germany (2014–15) Mohamed El-Morsi — Transworld Stuttgart, Germany (2007) Faeka Khater — National Research Development & Trading Co., Cairo, Egypt Florian Hauser — Karlsruhe University Center, Cairo, Egypt (1985–87) (2003–04) of Applied Sciences, Karlsruhe , Germany Kyu-Chan Kim — LG Electronics Systems Henrik Engdahl — Royal Institute of (2007–08) Co. Ltd., Kyungki-Do, Korea (1995–97) Technology, Stockholm, Sweden (1997–98) Yi Kang He — China (1982–83) SeHwan Kim — Yeungnam University, Daniel Efren Gaona Erazo — University Laureen Hellouin — University of Kyungbuk, Korea (2014–15) of Oviedo, Gijón, Spain (2016) Nantes, France (1997–98) Young-Kyoun Kim — Samsung Azza Fahim — University of Cairo, Egypt Siroos Hemmattti — K.N. Toosi University Electronics Co., Ltd (2005) (1983) National Research Center of Cairo, of Technology, Tehran, Iran (2011–12) Ayuki Koishi — Toyota Motor Egypt (1989–90) Felix Hess — University of Stuttgart, Corporation, Aichi, Japan (2014–16) Yakov Familiant — University of Stuttgart, Germany (2007) Takeshi Komatsu — Kagoshima Wisconsin, Milwaukee, USA (2006) Kieth Hoffman— Queensland University University, Kagoshima, Japan (2005–06) Huthaifa Flieh — University of Oviedo, of Technology, Brisbane, Australia Pauli Johannes Komi — Finland Gijón, Spain (2013–15) (1989–90) (2002–03) Juio Merino Fernandez — Polytechnic Masafumi Horio — Fuji Electric Device Ulf Kreutzer — Universitat der University of Madrid, Spain (2011–12) Technology Co., Ltd., Matsumoto, Japan Bundeswehr, Munich, Germany (2009) Pablo Garcia Fernandez — University of (2007–09) Oystein Krovel — Norwegian University Oviedo, Gijon, Spain (2004) Takumi Ito — Toshiba Mitsubishi-‐Electric of Science and Technology, Norway Luca Del Ferraro — University of Rome Industrial Systems Corporation, Fuchu, (2004–05) ‘La Sapienza,’ Italy (2005) Japan (2013–14) Rüdiger Kusch — Technical University of Martin Fleischhauer — Bundeswehr Hagen Jahn — Technical University of Berlin, Berlin, Germany (2001–02) University of Munich, Germany (2011–12) Dresden, Dresden, Germany (1994–95) Hyuk-Il Kwon — Pohang Iron & Steel Co. Matthias Foerster — Ilmenau Technical Jin-Hong Jeon — Korea Ltd., Pohang, Korea (1995–96) University, Ilmenau, Germany (2001–02) Electrotechnology Research Institute, Jaime Arroyo Ledesma — Cinvestav, Matteo Gamba — Politechnic University Korea (2004–05) Guadalajara, Mexico (2005–06) of Torino, Italy (2014–15) Yu-Seok Jeong — Seoul National Jin-Won Lee — Samsung Electronics Co. Francesco Gennaro — University of University, Seoul, Korea (2001–02) Ltd., Suwon City, Korea (1994–95) Catania, Catania, Italy (1998) Sheng Ji — Shenyang University, China Wook-Jin Lee — Seoul National Xiaozi Goa — Tianjin University, Tianjin, (1987–88) University, Seoul, South Korea (2007–08) China (2010–12) Shiqi Ji — Tsinghua University, Beijing, Alessandra Del Cengio Leonardi — Teck Chiang Goh — Nagaoka University China (2013–14) University of Padova, Padova, Italy of Technology, Nagaoka, Japan (2011–12) Tan Wei Jian — China (1982) (1992–96) Juan Manuel Guerrero — University of Qin Jiang — Victoria University of Franco Leonardi — University of Padova, Oviedo, Gijon, Spain (2002) Technology-Footscray, Melbourne, Padova, Italy (1993–95) Australia (1997–98) 45 WELCOMEFAMILY

Ricardo Leuzzi — Politecnico di Bari, Hugo Mendonca — Universidad David O’Brien — Monash University, Gioia del Colle, Italy (2015) Politécnica de Madrid, Spain (2013–14) Clayton, Victoria, Australia (2000) Xianglin Li — Southeast University, Kenji Mitsumoto—Toshiba Corporation, Yoshiya Ohnuma — Nagaoka University Nanjing, China (2012–14) Tokyo, Japan (2006) of Technology, Nagaoka, Japan (2011–13) Fang Liu — Hefei University of Roberto Moncada Gatica — University Giovanna Oriti — University of Catania, Technology, Hefei, China (2012–13) of Concepcion, Chile (2005, 2009) Catania, Italy (1995–98) Poh Chiang Loh — Monash University, Yong-Ky Moon — Samsung Electronics Sigurd Ovrebo — Norwegian University Clayton, Victoria, Australia (2001) Co. Ltd., Suwon City, Korea (1995–96) of Science and Technology, Trondheim, Richard Lund — Norwegian University Takashi Nagano — Miyakonojo National Norway (2001) of Science and Technology, Trondheim, College of Technology, Japan (2005–06) Debiprasad Panda — India Institute of Norway (2001) Tsuyoshi Nagano — Nagaoka University Science, Bangalore, India (2000–02) Ståle Lygren — NTNU, Trondheim, of Technology, Nagaoka, Japan (2014–15) Niklas Panten — Christian-Albrechts- Norway (2005) Melissa Naghibian—University of University of Kiel, Germany (2013–14) Matheus S. Macedo — Tiradendes Wisconsin–Madison, Madison, WI, USA Chandana Pathirage — Aalborg University, Aracaju, Brazil (2016) (2006) University, Aalborg, Denmark (2000) Pukar Mahat — Institute of Energy Hayato Nakano — Fuji Electric Systems, Trinde Pande-Rolfsen — Norwegian Technology Aalborg University, Aalborg, Matsumoto, Japan (2010–13) University of Science and Technology, Denmark (2008) Noriya Nakao — Shibaura Institute of Trondheim, Norway (2002–03) Manuel Pinilla Martin — Technical Technology, Nagaoka, Japan (2014–15) Niklas Panten — Christian-‐Albrechts– University of Madrid, Madrid, Spain Helmut Niedrist — Technical University University of Kiel, Germany (2012–13) (2008–09) of Graz, Graz, Austria (1996–97) Jung Wook Park — Seoul, Korea Carlos Martínez — University of Oviedo, Naoto Niimura — Toshiba Mitsubishi-‐ (2003–04) Gijón, Spain (2014–15) Electric Industrial Systems Corporation, Sun S. Park — Kolon Engineering, Seoul, Francesco Martinez —University of Fuchu, Japan (2014–15) Korea (1990–91) Madrid, Madrid, Spain (2011–12) Carlos E. Nino — University of Puerto Mark Pedersen — Aalborg University, Yoichi Matsushita — Kagoshima Rico, Puerto Rico (2005) Denmark (2005–06) University, Kagoshima, Japan (2001) Akihiro Nonaka — Kagoshima University, Chandana Perera — Aalborg University, Kagoshima, Japan (2003–04) Aalborg East, Denmark (2000) Shekar Perlekar — Central Electronics Engineering Research Institute (CEERI), Pilani, India (1986) Marc Petit — RWTH Technical University of Aachen, Germany (2013–15) Frank Phlippen — Technical University of Aachen, Aachen, Germany (1997–98) Paolo Piagi — Universita di Torino, Torino, Italy (1994–95, 2005) Daniel Pohlenz — Ilmenau Technical University, Ilmenau, Germany Sagar Pokhrel — University of Oviedo, Gijón, Spain (2014–15) Mario Pulvirenti — University of Catania, Italy (2014–15) Stefan Quadrat — University of Bundeswehr, Munich, Germany (2010) Francesco Quattrone — Leibniz University, Hannover, Germany (2010–12)

Professor Lorenz in Nissan, Japan, for a research collaboration 46 Christian Rabus — University of Erlangen-Nuremberg, Nuremberg, Germany (2010) U.M. Rao — Central Electronics Engineering Research Institute (CEERI), Pilani, India (1987–87) David Diaz Regiosa — University of Oviedo, Gijon, Spain (2007–08) Habib Rehaolia — University of Tunis, Tunisia (1985) Leopoldo Resta — SIEI Peterlongo, Gerenzano, Italy (1994–95) Luiz Antonio d.Souza Ribeiro — University Federal da Paraiba, Paraiba, Brazil (1996–98) Jan Richnow — University of Bundeswehr, Munich, Germany (2010) Javier Rivas — Carlos 3tr University of Madrid, Madrid, Spain (2005–07) Ben Rudolph — TMEIC, Roanoke, VA Professor Jahns with WEMPEC alumni and past visitors at Huazhong University of Science and (2015–16) Technology (HUST). Thomas Rump — University of Rostock, Germany (2010) Olaf Simon — University of Karlsruhe, Chiping Sun — Harbin Institute of Hong Je Ryoo — Industrial Application Karlsruhe, Germany (1994–95) Technology, Harbin, China (1990) Laboratory/ KERI, Korea (2004–06) Stev Skaar — Norwegian University of Zhenxing Sun — Southeast University, Khaled Mohammed Sakkoury — Peace Science and Technology, Norway (2005) China (2016–17) Fellowship Trainee, Egypt (1992–93) Brigitte Sneyers — University of Brussels Takahiro Suzuki — Hitachi, Ltd., Hitachi, Ahmet Saleque — University of Oviedo, (1983) Japan (2008–09) Gijón, Spain (2014–15) Eng Kian Kenneth Sng — Ngee Ann Yusaku Suzuki — JSOL Corporation, Carlos Bo Santiago — University of Polytechnic, Singapore (1995–96) Tokyo, Japan (2010–12) Puerto Rico, Mayaguez (2002) Rainer Sommer — Technical University Jun Tamura — Nissan Research Center, Hiroyuki Sano — JSOL, Tokyo, Japan of Berlin, Berlin, Germany (1990) Kangawa, Japan (2010–12) (2008–10) Joong-Ho Song — Korea Institute of Chun Tang — University of Adelaide, Kensuke Sasaki — Nissan Research Science and Technology, Seoul, Korea Australia (2012–14) Center, Atsugi, Japan (2013–16) (1995–96) Roberto Terrigi — Ansaldo Ricerche, Italy Michael Saur — University of Erlangen, Ana Stankovic — Nikola Tesla EE Institute, (2004) Germany (2012–14) Belgrade, Yugoslavia (1990) Valentin Tijeras — Universidad de Michael Schüett — University of Rostock, Ewgenij Starschich — RWTH Aachen Granada, Granada, Spain (2000) Germany (2013–14), (2015–16) University, Toenisvorst, Germany (2006–07) Akio Toba — Fuji Electric Company, Ltd., Guiseppe Scarcella — University of Oscar Stielau — Rand Africaans Tokyo, Japan (1997–98) Catania, Catania, Italy (1998) University, Johannesburg, South Africa Shunsuke Tobayashi — Toshiba Salman Khalid Sheikh — University of (1991–91) Mitsubishi-‐Electric Industrial Systems Oviedo, Gijón, Spain (2016) Gorazd Stumberger — University of Corporation, Fuchu, Japan (2012–13) Yuichi Shibukawa — Nissan Research Maribor, Maribor, Slovenia (1997–98) Chengde Tong — Harbin Institute of Center, Kanagawa, Japan (2007–10) Bum-Seok Suh — Hanyang University, Technology, Harbin, China (2015–16) Shen Shicen — Beijing Institute of Seoul, Korea (1997–98) Jose Torrico — Unicamp, Brazil (2000) Control Engineering (1986–87) Yongsug Suh — Chonbuk National Eigo Totoki — Mitsubishi Electric University, South Korea (2016–17) Corporation, Amagaski, Japan (2014–16) 47 WELCOMEFAMILY

Pietro Tricoli — University of Naples ‘Federico II,’ Naples, Italy (2005) Andrew Tuckey — Eindhoven University of Technology (2000–01) Mark Ubbink — HAN University Arnhem/Nijrnegen, Arnehm, The Netherlands (2009) René Cristián Valenzuela — University of Concepción, Concepción, Chile (2001–02) Christoph van der Broeck — Technical University of Aachen, Germany (2011–13) Mostafa Valavi — Norwegian University of Science and Technology, Trondheim, Norway (2012–14) Rahul Varma — Central Electronics Engineering Research Institute (CEERI), Assistant Professor Sarlioglu with graduate students. Pilani, India (1986–87) Carlos Veganzones — Polytechnical University of Madrid, Spain (2012–13) Hanguang Wu — University of Fuzhou, Jens-Uwe Vilsser — University of Peoples Republic of China (1984–86) Karlsruhe, Germany (1994–95) Fan Wu — Harbin Institute of Technology, Oskar Wallmark — Chalmers University China (2014–15) of Technology (2005) Shanshan Wu —Tsinghua University, Marsha Walters — North Carolina AT&T, Beijing, China (2007–08) Greensboro, NC, USA (2006, 2007) Wei Xie — Universität der Bundeswehr-‐ Feng Xiang Wang — China (1982–83) Munich, Germany (2013–14) Kang Wang — Northwestern Yan-Hong Xue — Tsing Hua University, Visiting Professor Jiang and his daughter. Polytechnical University, Xi’an, China Beijing, China (1989–90) (2012–14) Sheng-Yang Yeh — University of Taiwan, Liang Wang — Tsinghua University, Taiwan (1986) Beijing, China (2012–13) Sung-Jung Yoon — Samsung Aerospace, Li Mei Wang — Shenyang University of Yongin-Kun, Kyungki-Do, Korea (1995–96) Technology, Shenyang, China (1998–99) Xinmei Yuan—Tsinghua University, Xiaocan Wang — Technical University of Beijing, China (2008–09) Munich, Germany (2013–14) Li Zhang — Southeast University Kai Warns — Technical University of (2016–17) Aachen, Aachen, Germany (1997–98) Shujun Zhang — Norwegian Masaki Wasekura — Toyota Motor University of Science and Technology, Prof. Lorenz tries on his German doctoral hat. Corporation, Toyota, Japan (2011–13) Trondheim,Norway (2010–11) Bernhard Werner — Technical University Xiaoguang Zhang — Harbin Institute of of Aachen, Aachen, Germany (1990–91) Technology, Harbin, China (2012–13) Karsten Wiedmann — University of Fei Zhao — Hanyang University, ERICA Hannover, Hannover, Germany (2009) Campus, Korea (2013–14) Rudolf Wieser — Technical University of Yifan Zhao — China University of Mining Vienna, Vienna, Austria (1997–98) and Technology, Xuzhou, China (1990–91) Hon Win Woon — University of Warwick, Warwick, United Kingdom (2006–07) Relaxing at the international potluck dinner. 48 www.wempec.wisc.edu 35 Years of Collaboration and Innovation 1981–2016

WEMPEC: www.wempec.wisc.edu 2559 Engineering Hall • 1415 Engineering Drive • Madison, WI 53706–1691 • Tel: 608–262–3934 • Fax: 608–262–5559