RCED-92-82 High-Speed Ground Transport: Acquiring Rights-Of-Way
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Modeling and Simulation of Shanghai MAGLEV Train Transrapid with Random Track Irregularities
Modeling and Simulation of Shanghai MAGLEV Train Transrapid with Random Track Irregularities Prof. Shu Guangwei M.Sc. Prof. Dr.-Ing. Reinhold Meisinger Prof. Shen Gang Ph.D. Shanghai Institute of Technology, Shanghai, P.R. China Nuremberg University of Applied Sciences, Nuremberg, Germany Tongji University, Shanghai, P.R. China Abstract The MAGLEV Transrapid is a kind of new type high speed train in the world which is levitated and gui- ded over the track using electro magnetic forces. Because the electro magnets are unstable, they ha- ve to be controlled. Since 2002 the worldwide first commercial use of such a high speed train based on German technology is running successfully in Shanghai Pudong Airport, P.R.China. In this paper modeling of the high speed MAGLEV train Transrapid is discussed, which considered the whole mechanical system of one vehicle with optimized suspension parameters and all controlled electro magnet pairs in vertical and lateral directions. The dynamical simulation code is generated with MATLAB/SIMILINK. For the design of the control system, the optimal Linear Quadratic Control for minimum control energy is used for each single electro magnet. The simulation results are presen- ted with the given vertical and lateral random track irregularities. The research work was carried out together with Prof. Shen Gang, Ph.D. during the time Prof. Dr. Meisinger was visiting professor in Shanghai 2006 and Prof. Shu Guangwei, M.Sc. was visiting profes- sor in Nuremberg 2007. ISSN 1616-0762 Sonderdruck Schriftenreihe der Georg-Simon-Ohm-Fachhochschule Nürnberg Nr. 39, Juli 2007 Schriftenreihe Georg-Simon-Ohm-Fachhochschule Nürnberg Seite 3 1. -
By James Powell and Gordon Danby
by James Powell and Gordon Danby aglev is a completely new mode of physically contact the guideway, do not need The inventors of transport that will join the ship, the engines, and do not burn fuel. Instead, they are the world's first wheel, and the airplane as a mainstay magnetically propelled by electric power fed superconducting Min moving people and goods throughout the to coils located on the guideway. world. Maglev has unique advantages over Why is Maglev important? There are four maglev system tell these earlier modes of transport and will radi- basic reasons. how magnetic cally transform society and the world economy First, Maglev is a much better way to move levitation can in the 21st Century. Compared to ships and people and freight than by existing modes. It is wheeled vehicles—autos, trucks, and trains- cheaper, faster, not congested, and has a much revolutionize world it moves passengers and freight at much high- longer service life. A Maglev guideway can transportation, and er speed and lower cost, using less energy. transport tens of thousands of passengers per even carry payloads Compared to airplanes, which travel at similar day along with thousands of piggyback trucks into space. speeds, Maglev moves passengers and freight and automobiles. Maglev operating costs will at much lower cost, and in much greater vol- be only 3 cents per passenger mile and 7 cents ume. In addition to its enormous impact on per ton mile, compared to 15 cents per pas- transport, Maglev will allow millions of human senger mile for airplanes, and 30 cents per ton beings to travel into space, and can move vast mile for intercity trucks. -
Flywheel Energy Storage System with Superconducting Magnetic Bearing
Flywheel Energy Storage System with Superconducting Magnetic Bearing Makoto Hirose * , Akio Yoshida , Hidetoshi Nasu , Tatsumi Maeda Shikoku Research Institute Incorporated , Takamatsu , Kagawa , Japan In an effort to level electricity demand between day and night, we have carried out research activities on a high-temperature superconducting flywheel energy storage system (an SFES) that can regulate rotary energy stored in the flywheel in a noncontact, low-loss condition using superconductor assemblies for a magnetic bearing. These studies are being conducted under a Japanese national project (sponsored by the Agency of Industrial Science and Technology - a unit of the Ministry of International Trade and Industry - and the New Energy and Industrial Technology Development Organization). Phase 1 of the project was carried out on a five-year plan beginning in fiscal 1995 with the participation of 10 interested companies, including Shikoku Research Institute Inc. During the five-year period, we carried out two major studies - one on the operation of a small flywheel system (built as a small-scale model) and the other on superconducting magnetic bearings as an elemental technology for a 10-kWh energy storage system. Of the results achieved in Phase 1 of the project (from October 1995 through March 2000), this paper gives an outline of the small flywheel system (having an energy storage capacity of 0.5 kWh) and reports on progress in the development of magnetic bearings using superconductor assemblies (which we call "superconducting magnetic bearings" or "SMBs"). 1. Small-Scale Model 1.1. System Configuration The small-scale model was built in 1998 mainly for the purpose of demonstrating a control technology for high-speed operation of a rotor levitated in a noncontact condition by a superconducting magnetic bearing. -
Review of Magnetic Levitation (MAGLEV): a Technology to Propel Vehicles with Magnets by Monika Yadav, Nivritti Mehta, Aman Gupta, Akshay Chaudhary & D
Global Journal of Researches in Engineering Mechanical & Mechanics Volume 13 Issue 7 Version 1.0 Year 2013 Type: Double Blind Peer Reviewed International Research Journal Publisher: Global Journals Inc. (USA) Online ISSN: 2249-4596 & Print ISSN: 0975-5861 Review of Magnetic Levitation (MAGLEV): A Technology to Propel Vehicles with Magnets By Monika Yadav, Nivritti Mehta, Aman Gupta, Akshay Chaudhary & D. V. Mahindru SRMGPC, India Abstract - The term “Levitation” refers to a class of technologies that uses magnetic levitation to propel vehicles with magnets rather than with wheels, axles and bearings. Maglev (derived from magnetic levitation) uses magnetic levitation to propel vehicles. With maglev, a vehicle is levitated a short distance away from a “guide way” using magnets to create both lift and thrust. High-speed maglev trains promise dramatic improvements for human travel widespread adoption occurs. Maglev trains move more smoothly and somewhat more quietly than wheeled mass transit systems. Their nonreliance on friction means that acceleration and deceleration can surpass that of wheeled transports, and they are unaffected by weather. The power needed for levitation is typically not a large percentage of the overall energy consumption. Most of the power is used to overcome air resistance (drag). Although conventional wheeled transportation can go very fast, maglev allows routine use of higher top speeds than conventional rail, and this type holds the speed record for rail transportation. Vacuum tube train systems might hypothetically allow maglev trains to attain speeds in a different order of magnitude, but no such tracks have ever been built. Compared to conventional wheeled trains, differences in construction affect the economics of maglev trains. -
Introduction & Overview of Magnetic Levitation (MAGLEV) Train System
Volume 3, Issue 2, February – 2018 International Journal of Innovative Science and Research Technology ISSN No:-2456 –2165 Introduction & Overview of Magnetic Levitation (MAGLEV) Train System Mr. Abhijeet T. Tambe1 Prof. Dipak S. Patil2 Mechanical Department Mechanical Department Loknete Gopinathji Munde Institute of Engineering Loknete Gopinathji Munde Institute of Engineering Education & Research Education & Research Nashik, India Nashik, India Mr. Sanjay S. Avhad3 Mechanical Department Loknete Gopinathji Munde Institute of Engineering Education & Research Nashik, India Abstract - In this paper, we will discuss about Basics of I. INTRODUCTION magnetic levitation train system , its components and working. A German inventor named “Alfred Zehden” was Basically, the MAGLEV train stands for magnetic levitation awarded by United States Patent for a linear motor propelled train and is a system of high speed transportation as compared train. The inventor was awarded U.S. Patent 782,312 on 14 to conventional train system. February 1905 and U.S. Patent RE 12,700 on 21 August The term “MAGLEV” refers not only to the vehicles 1907. An Electromagnetic transportation system was but to the railway system as well specially design for magnetic discovered and developed in 1907 by F.S. Smith. In levitation and propulsion. The important concept of this system between 1937 & 1941 Herman Kemper was awarded by is to generate magnetic field obtained by using either serious of German patents for magnetic levitation train permanent magnets or electromagnets. As compared to propelled by linear motors. conventional train, maglev train system has no moving parts, the train travels along its guideway of magnets which controls Maglev is derived from magnetic levitation which means the train stability and speed therefore the maglev train are to lift a vehicle without any mechanical support with the quiter and smoother than conventional trains and have the help of magnetic field generated by either permanent potential for much higher speed. -
Analytical Analysis of Magnetic Levitation Systems with Harmonic Voltage Input
actuators Article Analytical Analysis of Magnetic Levitation Systems with Harmonic Voltage Input Serguei Maximov 1,† , Felipe Gonzalez-Montañez 2,† , Rafael Escarela-Perez 2,*,† , Juan Carlos Olivares-Galvan 2,† and Hector Ascencion-Mestiza 1,† 1 Posgrado en Eléctrica, Tecnológico Nacional de México, Instituto Tecnológico de Morelia, Morelia C.P. 58120, Mexico; [email protected] (S.M.); [email protected] (H.A.-M.) 2 Departamento de Enérgia, Universidad Autónoma Metropolitana Azcapotzalco, Ciudad de México C.P. 02200, Mexico; [email protected] (F.G.-M.); [email protected] (J.C.O.-G.) * Correspondence: [email protected] † These authors contributed equally to this work. Received: 30 July 2020; Accepted: 9 September 2020; Published: 11 September 2020 Abstract: In this paper, a new analytical method using Lagrange equations for the analysis of magnetic levitation (MagLev) systems is proposed, using Thomson’s jumping ring experiment. The method establishes the dependence of the primary and induced currents, and also the equilibrium height of the levitating object on the input voltage through the mutual inductance of the system. The mutual inductance is calculated in two ways: (i) by employing analytical formula; (ii) through an improved semi-empirical formula based on both measurements and analytical results. The obtained MagLev model was analyzed both analytically and numerically. Analytical solutions to the resulting equations were found for the case of a dynamic equilibrium. The numerical results obtained for the dynamical model under transient operation show a close correspondence with the experimental results. The good precision of the analytical and numerical results demonstrates that the developed method can be effectively implemented. -
A Parametric Analysis of Magnetic Braking – the Eddy Current Brakes – for High Speed and Power Automobiles and Locomotives Using SIMULINK
ISSN (Print) : 2320 – 3765 ISSN (Online): 2278 – 8875 International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering (An ISO 3297: 2007 Certified Organization) Vol. 3, Issue 8, August 2014 A Parametric Analysis of Magnetic Braking – The Eddy Current Brakes – For High Speed and Power Automobiles and Locomotives Using SIMULINK Er. Shivanshu Shrivastava B.Tech, Department of Electrical & Electronics Engineering, VIT University, Vellore, India ABSTRACT: Eddy Current braking technique is a classical example of how effective and efficient braking be obtained from application of magnetic field. Eddy current braking is based on the principle of relative motion between a magnetic source and a metal. In this paper, eddy current braking system is modeled in SIMULINK and effects of various parameters are observed over the overall braking. This would provide a comparative study between the various parameters involved and understand the braking system. I.INTRODUCTION Braking forms an important part of motion of any automobile or locomotive. Effective braking ensures the safety of the passengers and goods an automobile or a locomotive is carrying. Hence, new and effective braking techniques are required which increase the efficiency of the existing braking system by either replacing the older systems or by providing an auxiliary support whenever required. The main advantage of eddy current brakes lies over the fact that, more the relative motion between the metal and the magnetic source, more would be the braking force observed by the metal disc. Owing to their efficiency at very high speeds these brakes are used in high speed locomotives and their scope can be further increased to high performance/racing automobiles. -
Effect of Hyperloop Technologies on the Electric Grid and Transportation Energy
Effect of Hyperloop Technologies on the Electric Grid and Transportation Energy January 2021 United States Department of Energy Washington, DC 20585 Department of Energy |January 2021 Disclaimer This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States government or any agency thereof. Department of Energy |January 2021 [ This page is intentionally left blank] Effect of Hyperloop Technologies on Electric Grid and Transportation Energy | Page i Department of Energy |January 2021 Executive Summary Hyperloop technology, initially proposed in 2013 as an innovative means for intermediate- range or intercity travel, is now being developed by several companies. Proponents point to potential benefits for both passenger travel and freight transport, including time-savings, convenience, quality of service and, in some cases, increased energy efficiency. Because the system is powered by electricity, its interface with the grid may require strategies that include energy storage. The added infrastructure, in some cases, may present opportunities for grid- wide system benefits from integrating hyperloop systems with variable energy resources. -
A Robust Levitation Control of Maglev Vehicles Subject to Time Delay and Disturbances: Design and Hardware Experimentation
applied sciences Article A Robust Levitation Control of Maglev Vehicles Subject to Time Delay and Disturbances: Design and Hardware Experimentation You-gang Sun 1,2 , Si Xie 3, Jun-qi Xu 2 and Guo-bin Lin 2,* 1 College of Transportation Engineering, Tongji University, Shanghai 201804, China; [email protected] 2 National Maglev Transportation Engineering R&D Center, Tongji University, Shanghai 201804, China; [email protected] 3 Logistics Engineering College, Shanghai Maritime University, Shanghai 201306, China; [email protected] * Correspondence: [email protected]; Tel.: +86-021-69580145 Received: 2 December 2019; Accepted: 5 February 2020; Published: 10 February 2020 Abstract: Maglev vehicles have become a new type of transportation system with higher speed, lower noise, and commercial appeal. Magnetic-suspension systems, which have high nonlinearity and open-loop instability, are the core components of maglev vehicles. The high-performance control of maglev vehicles has been the focus of numerous studies. Encountering challenges in the levitation control of maglev vehicles in the form of uncertain time delays and disturbances is unavoidable. To cope with these problems, this study presents the design of an adaptive robust controller based on the Riccati method and sliding-mode technology, simultaneously taking into account the influence of time delays and disturbances. The asymptotic stability of the closed-loop system with the proposed control law is proved by the Lyapunov method. Control performances of the proposed controller are shown in the simulation results. Together with the consistently stabilizing outputs, the presented control approach can handle time delays and disturbances well. Finally, experiments were also implemented to examine its practical control performance of the robust levitation-control law. -
Dynamic Suspension Modeling of an Eddy-Current Device: an Application to Maglev
DYNAMIC SUSPENSION MODELING OF AN EDDY-CURRENT DEVICE: AN APPLICATION TO MAGLEV by Nirmal Paudel A dissertation submitted to the faculty of The University of North Carolina at Charlotte in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Electrical Engineering Charlotte 2012 Approved by: Dr. Jonathan Z. Bird Dr. Yogendra P. Kakad Dr. Robert W. Cox Dr. Scott D. Kelly ii c 2012 Nirmal Paudel ALL RIGHTS RESERVED iii ABSTRACT NIRMAL PAUDEL. Dynamic suspension modeling of an eddy-current device: an application to Maglev. (Under the direction of DR. JONATHAN Z. BIRD) When a magnetic source is simultaneously oscillated and translationally moved above a linear conductive passive guideway such as aluminum, eddy-currents are in- duced that give rise to a time-varying opposing field in the air-gap. This time-varying opposing field interacts with the source field, creating simultaneously suspension, propulsion or braking and lateral forces that are required for a Maglev system. In this thesis, a two-dimensional (2-D) analytic based steady-state eddy-current model has been derived for the case when an arbitrary magnetic source is oscillated and moved in two directions above a conductive guideway using a spatial Fourier transform technique. The problem is formulated using both the magnetic vector potential, A, and scalar potential, φ. Using this novel A-φ approach the magnetic source needs to be incorporated only into the boundary conditions of the guideway and only the magnitude of the source field along the guideway surface is required in order to compute the forces and power loss. -
(Presentation): Improving Railway Technologies and Efficiency
RegionalConfidential EST Training CourseCustomizedat for UnitedLorem Ipsum Nations LLC University-Urban Railways Shanshan Li, Vice Country Director, ITDP China FebVersion 27, 2018 1.0 Improving Railway Technologies and Efficiency -Case of China China has been ramping up investment in inner-city mass transit project to alleviate congestion. Since the mid 2000s, the growth of rapid transit systems in Chinese cities has rapidly accelerated, with most of the world's new subway mileage in the past decade opening in China. The length of light rail and metro will be extended by 40 percent in the next two years, and Rapid Growth tripled by 2020 From 2009 to 2015, China built 87 mass transit rail lines, totaling 3100 km, in 25 cities at the cost of ¥988.6 billion. In 2017, some 43 smaller third-tier cities in China, have received approval to develop subway lines. By 2018, China will carry out 103 projects and build 2,000 km of new urban rail lines. Source: US funds Policy Support Policy 1 2 3 State Council’s 13th Five The Ministry of NRDC’s Subway Year Plan Transport’s 3-year Plan Development Plan Pilot In the plan, a transport white This plan for major The approval processes for paper titled "Development of transportation infrastructure cities to apply for building China's Transport" envisions a construction projects (2016- urban rail transit projects more sustainable transport 18) was launched in May 2016. were relaxed twice in 2013 system with priority focused The plan included a investment and in 2015, respectively. In on high-capacity public transit of 1.6 trillion yuan for urban 2016, the minimum particularly urban rail rail transit projects. -
Japan's High-Speed Rail System Between Osaka
MTI Report MSTM 00-4 Japan’s High-Speed Rail System Between Osaka and Tokyo and Commitment to Maglev Technology: A Comparative Analysis with California’s High Speed Rail Proposal Between San Jose/San Francisco Bay Area and Los Angeles Metropolitan Area March 2000 Robert Kagiyama a publication of the Norman Y. Mineta International Institute for Surface Transportation Policy Studies IISTPS Created by Congress in 1991 Technical Report Documentation Page 1. Report No. 2. Government Accession No. 3. Recipients Catalog No. 4. Title and Subtitle 5. Report Date Japan’s High-Speed Rail System between Osaka and Tokyo and March 2000 Commitment to Maglev Technology: A Comparative Analysis with California’s High-Speed Rail Proposal between San Jose/San Francisco bay Area and Los Angeles Metropolitan Area 6. Performing Organization Code 7. Author 8. Performing Organization Report No. Robert Kagiyama MSTM 00-4 9. Performing Organization Name and Address 10. Work Unit No. Norman Y. Mineta International Institute for Surface Transportation Policy Studies College of Business—BT550 San José State University San Jose, CA 95192-0219 11. Contract or Grant No. 65W136 12. Sponsoring Agency Name and Address 13. Type of Report and Period Covered California Department of Transportation U.S. Department of Transportation MTM 290 March 2000 Office of Research—MS42 Research & Special Programs Administration P.O. Box 942873 400 7th Street, SW Sacramento, CA 94273-0001 Washington, D.C. 20590-0001 14. Sponsoring Agency Code 15. Supplementary Notes This capstone project was submitted to San José State University, College of Business, Master of Science Transportation Management Program as partially fulfillment for graduation.