Three-dimensional Analytical Modeling of Axial Flux Permanent Magnets Maglev Motor  

作　　者：Wei Qin Gang Lv Yuhua Ma 

机构地区：[1]IEEE [2]the School of Electrical Engineering,BeijingJiao Tong University,Beijing 100044,China [3]the Taiyuan Institute of China Coal Technology and Engineering Group,Taiyuan 030006,China

出　　处：《CES Transactions on Electrical Machines and Systems》2022年第4期438-444,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 Fundamental Research Funds for the Central Universities of China under Grant No.2022JBMC050。

摘　　要：The three-dimensional(3D)analytical model of the magnetic field in an Axial Flux Permanent Magnets Maglev Motor(AFPMMM)is proposed and investigated the influence of the structural parameters on electromagnetic characteristics.Firstly,the topology and working principle of the AFPMMM is introduced,and the model is transferred into a mathematical model in 3D cartesian coordinate.Then,the volume integral method and equivalent current sheets model is applied to find the 3D magnetic field distribution function of Halbach rotor.A unified form expression can be obtained by two dimensional discrete fourier transform(2-D DFT)is applied on the 3D magnetic field distribution function.Thirdly,the conductive and nonconductive regions of AFPMMM will be formulated by the second order vector potential(SOVP)to built the 3D analytic model.The expression of the lift force,torque and power losses was derived.Besides,the relationship between electromagnetic characteristics and structural parameters of the AFPMMM were analyzed based on 3D analytic model and validated using the 3D finite element analysis(FEA).Finally,the experiments based on a small scale prototype are carried out to verify the analytical results.

关 键 词：Axial flux Permanent magnet machines MAGLEV Analytical model Electromagnetic performance 

分 类 号：U266.4[机械工程—车辆工程]