Reduction of Unipolar Leakage Flux and Torque Ripple in Consequent-pole PM Vernier Machine  

作　　者：Liang Xu Yang Li Wenxiang Zhao Guohai Liu 

机构地区：[1]the School of Electrical and Information Engineering,Jiangsu University,Zhenjiang,212013,China [2]the Jiangsu Key Laboratory of Drive and Intelligent Control for Electric Vehicle,and the National Center for International Research on Structural Health Management of Critical Components,Jiangsu University,Zhenjiang,212013,China [3]IEEE

出　　处：《CES Transactions on Electrical Machines and Systems》2023年第1期35-44,共10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 Projects 52177044 and 52025073;in part by the China Postdoctoral Science Foundation under Project 2019T120395;in part by Hong Kong Scholars Program under Project XJ2019031;in part by the Natural Science Foundation of Jiangsu Higher Education Institutions under Project 21KJA470004;in part by Qing Lan Project of Jiangsu Province;in part by the Priority Academic Program Development of Jiangsu Higher Education Institutions

摘　　要：This paper proposes a new consequent-pole permanent magnet vernier machine(CPMVM),which can be regarded as a combination of two conventional CPMVM with opposite polarities.Based on the simplified axial magnetic circuit model,it is verified that the proposed CPMVM can reduce the unipolar leakage flux.In order to reduce the torque ripple of machine and improve the output torque of machine,the flux barrier is placed on the rotor of the proposed machine.Then,the parameters of the proposed CPMVM are optimized and determined.Moreover,the electromagnetic performance,including no-load air-gap flux density,average torque and torque ripple,flux linkage,back-electromotive force,cogging torque,average torque,torque ripple,power factor and loss,is compared with conventional surface-mounted permanent magnet vernier machine(SPMVM)and CPMVM.Finally,it is demonstrated that proposed CPMVM with flux barrier can effectively reduce the unipolar leakage flux and greatly reduce the torque ripple of machine.Also,compared with the SPMVM,the proposed CPMVM with flux barrier saves more than 45%of the permanent magnet material without reducing output torque.

关 键 词：Consequent-pole Permanent magnet vernier machine Unipolar leakage flux Torque ripple Flux barrier Output torque 

分 类 号：TM352[电气工程—电机]