Numerical Analysis of the Rotational Magnetic Springs for EDS Maglev Train  

作　　者：Gang Lv Yaqing Liu Zhixuan Zhang Xiaodong Li 

机构地区：[1]IET [2]Sch.of E.E.,Beijing Jiaotong Univ.,Beijing 100044,China [3]Macao University of Science and Technology,Faculty of Innovation Engineering,Macao,999078,China

出　　处：《CES Transactions on Electrical Machines and Systems》2022年第1期60-66,共7页中国电工技术学会电机与系统学报（英文）

基　　金：supported in part by the National Natural Science Foundation of China under Grant(52077003 and 51777009)。

摘　　要：Different from the traditional railway trains,the combined levitation and guidance EDS maglev train is more likely to rotate after being disturbed.Therefore,the rotational electromagnetic stiffnesses are significant operating parameters for the train.In this paper,the different effects of each translational offset generated in the rotational motion on the corresponding rotational electromagnetic stiffnesses in the EDS maglev train are analyzed and calculated.Firstly,a three-dimensional model of the maglev train is established.Then,based on the space harmonic method and the equivalent circuit of the levitation and guidance circuits,the formulas of rolling,pitching and yawing stiffness are presented.Finally,by comparing with the three-dimensional finite element simulation results,the key translational displacements in the rotational motion which has a great impact on the stiffness are obtained.Hence,the three-dimensional analytical formula can be simplified and the computation can be reduced.In addition,the accuracy of the calculation results is verified by comparing with the experimental data of Yamanashi test line.

关 键 词：Magnetic spring EDS maglev train electrodynamic rotational motion rolling stiffness pitching stiffness yawing stiffness 

分 类 号：U266.4[机械工程—车辆工程]