高速永磁电动悬浮系统特性分析及试验研究

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DOI：10.15938/j. emc.2025.08.010

中图分类号：TM351；TP273 文献标志码：A 文章编号：1007-449X（2025）08-0104-12

Characteristics analysis and experimental study of high speed permanent magnet electric suspension system

LUO Shujuan1， YUAN Cheng²， ZHANG Min1， MA Weihua1（1.State Key Laboratory of Rail Transit Vehicle System，Southwest Jiaotong University，Chengdu 610031，China;2.CRRC Qingdao Sifang Co.，Ltd.，Qingdao 26600O，China）

Abstract：To study the suspension characteristics of high-speed permanent magnet electrodynamic suspension systems and improve their suspension performance， the electromagnetic force produced within the system was calculated using theoretical analysis，finite element simulation，and field tests. Firstly，an idealized theoretical model of permanent magnet electrodynamic suspension considering the thickness of the track was established to study the analytical relationship between the electromagnetic force and the source magnetic field，and the evaluation indicators of the system's suspension performance were established.Then，a parametric transient finite element simulation model was established to verify accuracy of the theoretical model，and further characterize the suspension performance of the permanent magnet electric system regarding the structure of the permanent magnet array and the sizes of the induction track.Finaly，a test platform capable of reaching speeds up to 45O kilometers per hour was built to verify accuracy of the dynamic characteristic analysis results of the system.The results show that when the ratio of the length，width，and height of a single magnet block in the permanent magnet array is designed as 1：1.2：O.8， the thickness of the induction track plate is designed as 5mm ，and the width is designed as 1.75 times the width of the permanent magnet array，the four-module Halbach array permanent magnet electrodynamic suspension systems can attain optimal suspension performance. Using aluminum for the track plate can reduce material costs while maintaining suspension performance. The research results can provide theoretical guidance and technical support for the application of permanent magnet electrodynamic suspension systems in the high-speed domain.

Keywords： permanent magnet electrodynamic suspension； suspension characteristics； electromagneticforce;structural parameters； analytical calculation;experimental study

0引言

永磁电动悬浮系统通过永久磁体和感应轨道的相对运动，在感应轨道内感应出涡电流，感应涡流与源磁场相互作用产生电磁力使车辆悬浮。（剩余15423字）