Sleeve Design of Permanent-magnet Machine for Low Rotor Losses  

作　　者：Junqiang Zheng Wenxiang Zhao Jinghua Ji Jihong Zhu Christopher H.T.Lee 

机构地区：[1]School of Electrical and Information Engineering,Jiangsu University,Zhenjiang 212013,China [2]Department of Computer Science and Technology,Tsinghua University,Beijing 100000,China [3]School of Electrical and Electronic Engineering,Nanyang Technological University,639798,Singapore

出　　处：《Chinese Journal of Electrical Engineering》2020年第4期86-96,共11页中国电气工程学报（英文）

基　　金：Supported by the National Natural Science Foundation of China(51991383);the Natural Science Foundation of Jiangsu Province(BK20171298);the Graduate Scientific Research Innovation Project of Jiangsu Province(KYCX18_2248);the Priority Academic Program Development of Jiangsu Higher Education Institutions.

摘　　要：In this study,a novel rotor sleeve for permanent-magnet(PM)machines equipped with fractional-slot concentrated-windings(FSCW)is proposed.With the newly designed rotor sleeve,the rotor eddy-current(EC)losses are significantly reduced,and the torque density of the machine is improved.First,the rotor EC losses of a surface-mounted PM machine with the sleeve are analyzed.Meanwhile,the sleeve EC barriers and PM segmentation technologies for the suppression of the rotor EC losses are evaluated.Subsequently,an FSCW PM machine with the newly designed sleeve is proposed and optimized for a given set of specifications.Its electromagnetic and mechanical performances are evaluated by the finite element method(FEM).Finally,three assembling methods are presented and assessed comprehensively in terms of their merits and drawbacks.

关 键 词：Permanent-magnet machine rotor losses SLEEVE EDDY-CURRENT concentrated-windings 

分 类 号：TM351[电气工程—电机]