DOCSLIB.ORG

Master Document Template

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

Copyright by Krystian Amadeusz Zimowski 2012 The Thesis Committee for Krystian Amadeusz Zimowski Certifies that this is the approved version of the following thesis: Next Generation Wind Energy Harvester to Power Bridge Health Monitoring Systems APPROVED BY SUPERVISING COMMITTEE: Supervisor: Richard H. Crawford Co-supervisor: Kristin L. Wood Next Generation Wind Energy Harvesting to Power Bridge Health Monitoring Systems by Krystian Amadeusz Zimowski, B.S.M.E. Thesis Presented to the Faculty of the Graduate School of The University of Texas at Austin in Partial Fulfillment of the Requirements for the Degree of Master of Science in Engineering The University of Texas at Austin May 2012 Dedication This thesis is first of all dedicated to my parents, who sacrificed everything for me and for my education. Acknowledgements I would like to acknowledge Dr. Kristin Wood, Dr. Richard Crawford, and Dr. Sharon Wood, for allowing me to work on such a fantastic research project and for mentoring me throughout my graduate studies at The University of Texas at Austin. I am grateful that the National Science Foundation and the National Institute for Standards and Technology (NIST) Technology Innovation Program (TIP) provided funds to address the critical issue of bridge health monitoring systems. I would like also extend a personal thank you to Dr. Dan Jensen at the United States Air Force Academy for granting me the funding to work on this project through a National Science Foundation (NSF) grant for improving student learning using finite element learning modules. Finally, I would like to extend a personal thanks to my fellow mechanical engineers with whom I worked on this project: Sumedh Inamdar, Eric Dierks, and Travis McEvoy. May 4, 2012 v Abstract Next Generation Wind Energy Harvester to Power Bridge Health Monitoring Systems Krystian Amadeusz Zimowski, M.S.E. The University of Texas at Austin, 2012 Supervisor: Richard H. Crawford The research reported in this thesis is part of a project to develop a remote wireless sensing network for monitoring the health of highway bridges. Remote health monitoring that does not require direct human observation has many advantages in terms of cost and increased productivity. However, bridges that cannot be easily connected to the power grid require alternative means of acquiring power. This thesis describes the design of a wind energy harvester to power a particular component in the sensor network, the wireless router. The work discussed in this thesis provides a review of relevant literature and development of a detailed analytical modeling of wind turbine behavior. The analytical model provides key information on sizing generators and choosing appropriate wind turbine dimensions to provide the required amount of power. The analytical model also distinguishes the performance of vertical and horizontal axis wind turbines. The model is verified through design and testing of a first generation prototype vi and benchmarking of a commercially available turbine. Based on these results, the design of the next generation wind harvesting system is described. A new methodology to design non-destructive attachment systems is also discussed. vii Table of Contents LIST OF TABLES ............................................................................................................... X LIST OF FIGURES ........................................................................................................... XIII CHAPTER 1: INTRODUCTION ............................................................................................ 1 1.1 Project Description and Pain ................................................................................. 1 1.2 Challenges and Opportunities ............................................................................... 7 1.3 Hypothesis and Research Objectives .................................................................... 9 1.4 Organization of Thesis .......................................................................................... 9 CHAPTER 2: REVIEW OF LITERATURE............................................................................ 11 2.1 Introduction ......................................................................................................... 11 2.2 What is the current design space of wind turbine? How does one categorize them based on aerodynamic performance and function? ................................................... 12 2.3 What is the current state-of-the-art technology for small scale wind turbines and residential applications? ............................................................................................ 25 2.4 Is it more optimal from an electricity generation and cost standpoint to have many smaller turbines or one larger one? ................................................................. 32 2.5 What efforts have been made to optimize blade design for a given wind turbine? ................................................................................................................................... 34 2.6 How does one decide upon the type and size of generator for wind turbines? What are the key specifications to consider? ............................................................ 39 2.7 Discussion ........................................................................................................... 45 CHAPTER 3: ANALYTICAL MODELING OF WIND TURBINES ........................................... 47 3.1 Motivation ........................................................................................................... 47 3.2 Identifying Key Requirements, Assumptions and Equations ............................. 48 3.3 Model Simulation................................................................................................ 54 3.4 Discussion ........................................................................................................... 73 CHAPTER 4: PROTOTYPE DEVELOPMENT AND EXPERIMENTATION ................................ 79 4.1 Motivation ........................................................................................................... 79 4.2 Identifying Requirements and Constraints.......................................................... 79 4.3 Design and Construction of the Alpha Prototype ............................................... 81 4.4 Experimentation of Alpha Prototype .................................................................. 90 4.5 Discussion ......................................................................................................... 102 CHAPTER 5: NEXT GENERATION WIND TURBINE DESIGN ........................................... 105 5.1 Motivation ......................................................................................................... 105 5.2 Commercial Turbine Benchmarking................................................................. 105 5.3 Design of Next Generation Wind Turbine System ........................................... 116 5.4 Discussion.. ....................................................................................................... 133 CHAPTER 6: NEXT GENERATION ATTACHMENT SYSTEM ............................................ 135 6.1 Motivation ......................................................................................................... 135 6.2 Attachment Methodology ................................................................................. 135 6.3 Adaptation of Methodology .............................................................................. 140 viii 6.4 Attachment Design Experiment and Results .................................................... 145 6.5 Final Attachment Design .................................................................................. 147 6.6 Discussion ......................................................................................................... 149 CHAPTER 7: CONCLUSIONS AND FUTURE WORK ......................................................... 150 7.1 Research Findings ............................................................................................. 150 7.2 Next Steps in the Research ............................................................................... 153 7.3 Future Work ...................................................................................................... 155 APPENDIX A: DYNAMIC WIND TURBINE BEHAVIOR CODE .......................................... 157 APPENDIX B: DIMENSION DRAWINGS .......................................................................... 164 APPENDIX C: FIRST GENERATION PROTOTYPE BILL OF MATERIALS ............................ 165 APPENDIX D: FIRST GENERATION PROTOTYPE PICTURES ............................................ 167 APPENDIX E: POWER MODELING CODE ....................................................................... 170 APPENDIX F: MECHANICAL ATTACHMENT PRINCIPLES ............................................... 175 APPENDIX G: NEXT GENERATION WIND ENERGY HARVESTER ................................... 178 REFERENCES ................................................................................................................ 179 VITA ............................................................................................................................ 185 ix List of Tables Table 1.1: Power and energy consumption for test scenarios. ..................................... 6 Table 1.2: Functional requirements for the energy harvester. ....................................
Recommended publications
  • Goldwind Brochure-1.5-Web.Indd

    Goldwind Brochure-1.5-Web.Indd

    www.goldwindamerica.com E-mail: [email protected] Goldwind USA, Inc. 200 West Madison Street Suite 2800 Chicago, Illinois, USA Tel: +1 312-948-8050 Fax: +1 312-948-8051 PC: 60601 Xinjiang Goldwind Science & Technology Co., Ltd 107 Shanghai Road, Economic & Technological Development Zone, Urumqi, Xinjiang Tel: +86-(0)991-3767999 PMDD WIND TURBINE Fax: +86-(0)991-3762039 PC: 830026 Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. No. 19 Kangding Road, Economic & Technological 1.5MW Development Zone, Beijing (I) Tel: +86-(0)10-87857500 Fax: +86-(0)10-87857529 PC: 100176 No. 8 Boxing 1st Road, Economic & Technological Development Zone, Beijing (II) Tel: +86-(0)10-67511888 Fax: +86-(0)10-67511983 PC: 100176 www.goldwindamerica.com E-mail: [email protected] Goldwind USA, Inc. 200 West Madison Street Suite 2800 Chicago, Illinois, USA Tel: +1 312-948-8050 Fax: +1 312-948-8051 PC: 60601 Xinjiang Goldwind Science & Technology Co., Ltd 107 Shanghai Road, Economic & Technological Development Zone, Urumqi, Xinjiang Tel: +86-(0)991-3767999 PMDD WIND TURBINE Fax: +86-(0)991-3762039 PC: 830026 Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. No. 19 Kangding Road, Economic & Technological 1.5MW Development Zone, Beijing (I) Tel: +86-(0)10-87857500 Fax: +86-(0)10-87857529 PC: 100176 No. 8 Boxing 1st Road, Economic & Technological Development Zone, Beijing (II) Tel: +86-(0)10-67511888 Fax: +86-(0)10-67511983 PC: 100176 GOLDWIND 1.5MW PMDD WIND TURBINE SERIES DYNAMIC POWER CURVE GENERAL TECHNICAL SPECIFICATIONS
  • SRI: Wind Power Generation Project Main Report

    SRI: Wind Power Generation Project Main Report

    Environment Impact Assessment (Draft) May 2017 SRI: Wind Power Generation Project Main Report Prepared by Ceylon Electricity Board, Ministry of Power and Renewable Energy, Democratic Socialist Republic of Sri Lanka for the Asian Development Bank. CURRENCY EQUIVALENTS (as of 17 May 2017) Currency unit – Sri Lankan rupee/s(SLRe/SLRs) SLRe 1.00 = $0.00655 $1.00 = SLRs 152.70 ABBREVIATIONS ADB – Asian Development Bank CCD – Coast Conservation and Coastal Resource Management Department CEA – Central Environmental Authority CEB – Ceylon Electricity Board DoF – Department of Forest DS – District Secretary DSD – District Secretaries Division DWC – Department of Wildlife Conservation EA – executing agency EIA – environmental impact assessment EMoP – environmental monitoring plan EMP – environmental management plan EPC – engineering,procurement and construction GND – Grama Niladhari GoSL – Government of Sri Lanka GRM – grievance redress mechanism IA – implementing agency IEE – initial environmental examination LA – Local Authority LARC – Land Acquisition and Resettlement Committee MPRE – Ministry of Power and Renewable Energy MSL – mean sea level NARA – National Aquatic Resources Research & Development Agency NEA – National Environmental Act PIU – project implementation unit PRDA – Provincial Road Development Authority PUCSL – Public Utility Commission of Sri Lanka RDA – Road Development Authority RE – Rural Electrification RoW – right of way SLSEA – Sri Lanka Sustainable Energy Authority WT – wind turbine WEIGHTS AND MEASURES GWh – 1 gigawatt hour = 1,000 Megawatt hour 1 ha – 1 hectare=10,000 square meters km – 1 kilometre = 1,000 meters kV – 1 kilovolt =1,000 volts MW – 1 megawatt = 1,000 Kilowatt NOTE In this report, “$” refers to US dollars This environmental impact assessment is a document of the borrower. The views expressed herein do not necessarily represent those of ADB's Board of Directors, Management, or staff, and may be preliminary in nature.
  • Wind Turbine Write Up

    Wind Turbine Write Up

    Jankowski 1 Wind Turbine Write up By: Matt Jankowski EDSGN 100 Sec 014 Windmill Background Wind turbines are an essential tool for capturing natural energy and are very simple to understand the mechanisms behind. It’s as simple as instead of using electricity to create wind, such as a fan or an AC unit, wind turbines use wind to create electricity. Humans have used wind to power mechanisms and toys for decades, such as setting sail on a sailboat to flying a kite on a windy day. Then we took those ideas and turned it into a way to create energy. The rotor blades on windmills act as the blades on a helicopter and are set at 20 degree angles, which will produce the most rotor rotation. When the wind blows, it catches on the blades and causes the rotor to spin. The rotor is either directly connected to or connected through a series of gears to a generator. The generator runs, produces electricity and stores it to be used. My Windmill My solidworks model consists of eight different parts, assembled together to make a free-standing horizontal windmill. First, I started by connecting the base and the lower mast with three mates: concentric, coincident and front plane-front plane coincident. I then added the upper mast and swivel shaft, using three mates to add them to the assembly. Next, three blades, the hub and the main shaft were added. To assemble the blades into the hub, I had to make three mates: concentric, coincident, and a 20 degree angle between the right plane and the flat surface of the blade.
  • Energy Highlights

    Energy Highlights

    G NER Y SE E CU O R T I A T Y N NATO ENERGY SECURITY C E CENTRE OF EXCELLENCE E C N T N R E E LL OF EXCE ENERGY HIGHLIGHTS ENERGY HIGHLIGHTS 1 Content 7 Introduction 11 Chapter 1 – Wind Energy Systems and Technologies 25 Chapter 2 – Radar Systems and Wind Farms 36 Chapter 3 – Wind Farms Interference Mitigation 46 Chapter 4 – Environmental and societal impacts of wind energy 58 Chapter 5 – Wind Farms and Noise 67 Chapter 6 – Energy Storage and Wind Power 74 Chapter 7 – Case Studies 84 Conclusions 86 A Way Forward 87 Bibliography This is a product of the NATO Energy Security Centre of Excellence (NATO ENSEC COE). It is produced for NATO, NATO member countries, NATO partners, related private and public institutions and related individuals. It does not represent the opinions or policies of NATO or NATO ENSEC COE. The views presented in the articles are those of the authors alone. © All rights reserved by the NATO ENSEC COE. Articles may not be copied, reproduced, distributed or publicly displayed without reference to the NATO ENSEC COE and the respective publication. 2 ENERGY HIGHLIGHTS ENERGY HIGHLIGHTS 3 Role of windfarms for national grids – challenges, risks, and chances for energy security by Ms Marju Kõrts ACKNOWLEDGEMENTS EXECUTIVE SUMMARY AND KEY have arisen in other countries wher wind power RECOMMENDATIONS The author would like to acknowledge the work and insights of the people who contributed to this is expanding. study either via the conducted interviews or their fellowship at the NATO Energy Security Center of apid growth of wind energy worldwide Excellence in summer and autumn 2020.
  • Wind Power: Energy of the Future It’S Worth Thinking About

    Wind Power: Energy of the Future It’S Worth Thinking About

    Wind power: energy of the future It’s worth thinking about. »Energy appears to me to be the first and unique virtue of man.« Wilhelm von Humboldt 2 3 »With methods from the past, there will be no future.« Dr. Bodo Wilkens Wind power on the increase »Environmental protection is an opportunity and not a burden we have to carry.« Helmut Sihler When will the oil run out? Even if experts cannot agree on an exact date, one thing is certain: the era of fossil fuels is coming to an end. In the long term we depend on renewable sources of energy. This is an irrefutable fact, which has culminated in a growing ecological awareness in industry as well as in politics: whereas renewable sources of energy accounted for 4.2 percent of the total consumption of electricity in 1996, the year 2006 registered a proportion of 12 per- cent. And by 2020 this is to be pushed up to 30 percent. The growth of recent years has largely been due to the use of wind power. The speed of technical development over the past 15 years has brought a 20-fold rise in efficiency and right now wind power is the most economical regenerat- ive form there is to produce electricity. In this respect, Germany leads the world: since 1991 more than 19.460 wind power plants have been installed with a wind power capacity of 22.247 MW*. And there is more still planned for the future: away from the coastline, the offshore plants out at sea will secure future electricity supplies.
  • Picoturbine Windmill Plans and Experiments

    Picoturbine Windmill Plans and Experiments

    PicoTurbine Windmill Plans and Experiments Building instructions, Teacher’s guide, and Technical Notes An easy to build educational kit for grade 5 through adult. For hobbyists, science fairs, schools, home schools, youth groups, and experimenters. http://www.picoturbine.com ! WARNING: CHOKING HAZARD - Small parts, wire. Not for children under 4 years. Page 1. THESE PLANS ARE PRESENTED IN “AS IS” CONDITION. BY USING THESE PLANS YOU HOLD PICOTURBINE.COM, XIBOKK RESEARCH, AND ALL MEMBERS, INVESTORS, EMPLOYEES, AND OWNERS OF THOSE ORGANIZATIONS HARMLESS FROM ANY DAMAGES ARISING FROM THE USE OF THESE PLANS OR THE RESULTING MACHINES. IN NO CASE SHALL PICOTURBINE.COM OR XIBOKK RESEARCH BE LIABLE FOR ANY INCIDENTAL DAMAGES. THESE PLANS ARE NOT WARRENTEED FOR FITNESS FOR ANY PARTICULAR PURPOSE. Revision 1.1B, August, 1999 www.picoturbine.com Support PicoTurbine.com! If you have purchased this document as a part of a PicoTurbine.com kit, we appreciate your support! If you have downloaded this document as a free plan, we hope you enjoy it, and ask that you patronize PicoTurbine.com in the future so we can keep financing new projects. We have a complete line of Renewable Energy books, projects, and kits that are expanding every day. Stop by the web site and buy something! Tell your friends about us! Suggest our projects for youth groups, Scouting Groups, YMCA or similar organizations, classrooms and home schools. The proceeds will be used to support more fun renewable energy projects and kits at PicoTurbine.com. Thanks and have fun! Copyright ã 1999 PicoTurbine.com. All rights reserved. PicoTurbine.com is a wholly owned subsidiary of Xibokk Research.
  • Prognostics and Health Management of Wind Turbines: Current Status and Future Opportunities Shuangwen (Shawn) Sheng

    Prognostics and Health Management of Wind Turbines: Current Status and Future Opportunities Shuangwen (Shawn) Sheng

    Prognostics and Health Management of Wind Turbines: Current Status and Future Opportunities Shuangwen (Shawn) Sheng 2016 PHM Society Annual Conference Denver, Colorado October 4, 2016 NREL/PR-5000-67283 Outline . Introduction . Current status . Challenges and opportunities Photo by Lee Jay Fingersh, NREL 17245 2 Introduction: Global Wind Energy Figure from [1] Photo by HC Sorensen, Photo by Iberdrola Renewables, Inc., NREL 16706 Middelgrunden Wind Turbine Cooperative, NREL 17856 3 Reliability of Turbine Subassemblies: Old Statistics Failure/turbine/year and downtime from two large surveys of land-based European wind turbines during 13 years Electrical System LWK Failure Rate, approx 5800 Turbine Years Electrical Control WMEP Failure Rate, approx 15400 Turbine Years Other LWK Downtime, approx 5800 Turbine Years Hydraulic System WMEP Downtime, approx 15400 Turbine Years Yaw System Rotor Hub Mechanical Brake Rotor Blades Gearbox Generator Drive Train Figure from [2] 1 0.75 0.5 0.25 0 2 4 6 8 10 12 14 Failure/turbine/year Downtime per failure (days) • The Wissenschaftliches Mess-und Evaluierungsprogramm (WMEP) database was accomplished from 1989 to 2006 and contains failure statistics from 1,500 wind turbines [3]. • Failure statistics published by Landwirtschaftskammer Schleswig-Holstein (LWK) from 1993 to 2006 contain failure data from more than 650 wind turbines [3]. 4 Outage Duration for Different Subsystems: New Statistics . Downtime caused by premature component/subsystem failures, led by gearboxes, challenges the wind industry and results in an increased cost of energy for wind power. Average Turbine Outage Duration for Failures >1 Hour (days) 6 - Mechanical: yaw systems, mechanical brakes, hydraulic systems, rotor hubs, drivetrain 4 - Electrical: sensors, electrics, control systems.
  • Structure, Equipment and Systems for Offshore Wind Farms on the OCS

    Structure, Equipment and Systems for Offshore Wind Farms on the OCS

    Structure, Equipment and Systems for Offshore Wind Farms on the OCS Part 2 of 2 Parts - Commentary pal Author, Houston, Texas Houston, Texas pal Author, Project No. 633, Contract M09PC00015 Prepared for: Minerals Management Service Department of the Interior Dr. Malcolm Sharples, Princi This draft report has not been reviewed by the Minerals Management Service, nor has it been approved for publication. Approval, when given, does not signify that the contents necessarily reflect the views and policies of the Service, nor does mention of trade names or commercial products constitute endorsement or recommendation for use. Offshore : Risk & Technology Consulting Inc. December 2009 MINERALS MANAGEMENT SERVICE CONTRACT Structure, Equipment and Systems for Offshore Wind on the OCS - Commentary 2 MMS Order No. M09PC00015 Structure, Equipment and Systems: Commentary Front Page Acknowledgement– Kuhn M. (2001), Dynamics and design optimisation of OWECS, Institute for Wind Energy, Delft Univ. of Technology TABLE OF CONTENTS Authors’ Note, Disclaimer and Invitation:.......................................................................... 5 1.0 OVERVIEW ........................................................................................................... 6 MMS and Alternative Energy Regulation .................................................................... 10 1.1 Existing Standards and Guidance Overview..................................................... 13 1.2 Country Requirements. ....................................................................................
  • CHAPTER 6 Design and Development of Megawatt Wind Turbines

    CHAPTER 6 Design and Development of Megawatt Wind Turbines

    CHAPTER 6 Design and development of megawatt wind turbines Lawrence D. Willey General Electric Energy Wind, USA. Electric power generation is the single most important factor in the prosperity of modern man. Yet, increasing concerns over carbon emissions from burning fossil fuels have brought large-scale renewable energy technologies to the forefront of technological development. Framework for the successful design and develop- ment of large wind turbines (WTs) addresses the world’s power generation needs. The motivation for this work, the broad framework for success, the best approach for product design, various techniques and special considerations, and develop- ment aspects are presented. Horizontal axis WTs operating inland or in near-shore applications are specifi cally addressed. 1 Introduction Supplies of fossil fuels are inadequate to meet the growing need for more power generation, which is driven by increasing demand for electricity [ 1, 2 ]. The hori- zontal axis wind turbine (HAWT) is one of the most economical forms of modern power generation. HAWTs have numerous benefi ts: they conserve dwindling fos- sil fuel resources, reduce harmful emissions, and support a sustainable electric energy infrastructure for posterity. Large wind turbines (WTs) are an engineering challenge; they must endure some of the largest numbers of fatigue cycles for structures while meeting size and cost constraints [49]. New WTs must maximize reliability, availability, maintenance, and serviceability (RAMS) while having the lowest cost of energy (CoE) and highest net present value (NPV) for a customer and an original equipment manufacturer (OEM) [50]. One of the biggest motiva- tions for accelerating technological development of WTs is in support for the U.S.
  • IEA Wind Technology Collaboration Programme

    IEA Wind Technology Collaboration Programme

    IEA Wind Technology Collaboration Programme 2017 Annual Report A MESSAGE FROM THE CHAIR Wind energy continued its strong forward momentum during the past term, with many countries setting records in cost reduction, deployment, and grid integration. In 2017, new records were set for hourly, daily, and annual wind–generated electricity, as well as share of energy from wind. For example, Portugal covered 110% of national consumption with wind-generated electricity during three hours while China’s wind energy production increased 26% to 305.7 TWh. In Denmark, wind achieved a 43% share of the energy mix—the largest share of any IEA Wind TCP member countries. From 2010-2017, land-based wind energy auction prices dropped an average of 25%, and levelized cost of energy (LCOE) fell by 21%. In fact, the average, globally-weighted LCOE for land-based wind was 60 USD/ MWh in 2017, second only to hydropower among renewable generation sources. As a result, new countries are adopting wind energy. Offshore wind energy costs have also significantly decreased during the last few years. In Germany and the Netherlands, offshore bids were awarded at a zero premium, while a Contract for Differences auction round in the United Kingdom included two offshore wind farms with record strike prices as low as 76 USD/MWh. On top of the previous achievements, repowering and life extension of wind farms are creating new opportunities in mature markets. However, other challenges still need to be addressed. Wind energy continues to suffer from long permitting procedures, which may hinder deployment in many countries. The rate of wind energy deployment is also uncertain after 2020 due to lack of policies; for example, only eight out of the 28 EU member states have wind power policies in place beyond 2020.
  • U.S. Offshore Wind Manufacturing and Supply Chain Development

    U.S. Offshore Wind Manufacturing and Supply Chain Development

    U.S. Offshore Wind Manufacturing and Supply Chain Development Prepared for: U.S. Department of Energy Navigant Consulting, Inc. 77 Bedford Street Suite 400 Burlington, MA 01803-5154 781.270.8314 www.navigant.com February 22, 2013 U.S. Offshore Wind Manufacturing and Supply Chain Development Document Number DE-EE0005364 Prepared for: U.S. Department of Energy Michael Hahn Cash Fitzpatrick Gary Norton Prepared by: Navigant Consulting, Inc. Bruce Hamilton, Principal Investigator Lindsay Battenberg Mark Bielecki Charlie Bloch Terese Decker Lisa Frantzis Aris Karcanias Birger Madsen Jay Paidipati Andy Wickless Feng Zhao Navigant Consortium member organizations Key Contributors American Wind Energy Association Jeff Anthony and Chris Long Great Lakes Wind Collaborative John Hummer and Victoria Pebbles Green Giraffe Energy Bankers Marie DeGraaf, Jérôme Guillet, and Niels Jongste National Renewable Energy Laboratory David Keyser and Eric Lantz Ocean & Coastal Consultants (a COWI company) Brent D. Cooper, P.E., Joe Marrone, P.E., and Stanley M. White, P.E., D.PE, D.CE Tetra Tech EC, Inc. Michael D. Ernst, Esq. Notice and Disclaimer This report was prepared by Navigant Consulting, Inc. for the use of the U.S. Department of Energy – who supported this effort under Award Number DE-EE0005364. The work presented in this report represents our best efforts and judgments based on the information available at the time this report was prepared. Navigant Consulting, Inc. is not responsible for the reader’s use of, or reliance upon, the report, nor any decisions based on the report. NAVIGANT CONSULTING, INC. MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESSED OR IMPLIED. Readers of the report are advised that they assume all liabilities incurred by them, or third parties, as a result of their reliance on the report, or the data, information, findings and opinions contained in the report.
  • A Review on the Evolution of Darrieus Vertical Axis Wind Turbine: Small Wind Turbines

    A Review on the Evolution of Darrieus Vertical Axis Wind Turbine: Small Wind Turbines

    Journal of Power and Energy Engineering, 2019, 7, 27-44 http://www.scirp.org/journal/jpee ISSN Online: 2327-5901 ISSN Print: 2327-588X A Review on the Evolution of Darrieus Vertical Axis Wind Turbine: Small Wind Turbines Palanisamy Mohan Kumar1,2*, Krishnamoorthi Sivalingam2,3, Srikanth Narasimalu3, Teik-Cheng Lim2, Seeram Ramakrishna1, He Wei4 1Department of Mechanical Engineering, National University of Singapore, Singapore City, Singapore 2School of Science and Technology, Singapore University of Social Sciences, Singapore City, Singapore 3Innovation Centre, Nanyang Technological University, Singapore City, Singapore 4Singapore Institute of Manufacturing Technology, Singapore city, Singapore How to cite this paper: Kumar, P.M., Abstract Sivalingam, K., Narasimalu, S., Lim, T.-C., Ramakrishna, S. and Wei, H. (2019) A Re- Wind energy witnessed tremendous growth in the past decade and emerged view on the Evolution of Darrieus Vertical as the most sought renewable energy source after solar energy. Though the Axis Wind Turbine: Small Wind Turbines. Horizontal Axis Wind Turbines (HAWT) is preferred for multi-megawatt Journal of Power and Energy Engineering, power generation, Vertical Axis Wind Turbines (VAWT) is as competitive as 7, 27-44. https://doi.org/10.4236/jpee.2019.74002 HAWT. The current study aims to summarize the development of VAWT, in particular, Darrieus turbine from the past to the project that is underway. The Received: March 31, 2019 reason for the technical challenges and past failures are discussed. Various Accepted: April 25, 2019 configurations of VAWT have been assessed in terms of reliability, compo- Published: April 28, 2019 nents and low wind speed performance. Innovative concepts and the feasibil- Copyright © 2019 by author(s) and ity to scale up for megawatt electricity generation, especially in offshore envi- Scientific Research Publishing Inc.