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Research progress of high-speed maglev rail transit(PDF)


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Research progress of high-speed maglev rail transit
XIONG Jia-yang12 DENG Zi-gang1
(1. State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, Sichuan, China; 2. School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China)
rail transit high-speed maglev maglev train key technology high-temperature superconducting evacuated tube research progress
The development of high-speed maglev rail transit across the world was summarized based on the basic operating principles and technical characteristics of maglev trains. The electromagnetic suspension(EMS), permanent magnet electrodynamic suspension(PMEDS), low-temperature superconductor electrodynamic suspension(LTSEDS), and high-temperature superconducting magnetic levitation(HTS maglev)were compared in terms of their research histories, suspension characteristics, suspension gaps, suspension energy-consumption levels, control systems, technical maturity, and state of use. The progress of research on high-speed maglev in domestic and foreign universities, research institutions, and enterprises was summarized based on the literature research, comparison, analysis and refinement. The principles, technical strengths and weaknesses of various maglev rail transits were compared to analyze the viability and inadequacies of high-speed maglev rail transit in practical applications. The technical economy, application prospects and scenarios of four maglev modes were discussed. Six key scientific problems for the development of high-speed and ultra-high-speed vacuum-tube maglev rail transit were identified. These include the traction/braking control, kinetics and thermodynamics, safety and rescue protocol, sealing performance and vacuum pumping efficiency of tube, wireless communication, and interior environment control. The progress and plan of research and development in basic research and key technologies for HTS maglev originated in China were also described. Research results shows that the EMS or superconducting maglev technology is suitable for speeds between 400 km·h-1 and 600 km·h-1. The superconducting maglev technology can be used for speeds between 600 km·h-1 and 1 000 km·h-1. Speeds of 1 000 km·h-1 or greater require the maglev technologies of HTS maglev or EDS with vacuum-tube. As a prospective study, the technological breakthrough and validation in HTS with vacuum-tube maglev have profound and far-reaching implications on the rapid development of rail transit in China and even the world. 2 tabs, 15 figs, 72 refs.


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Last Update: 2021-03-20