Sleeve Design of Permanent-magnet Machine for Low Rotor Losses

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

作者机构：School of Electrical and Information EngineeringJiangsu UniversityZhenjiang 212013China Department of Computer Science and TechnologyTsinghua UniversityBeijing 100000China School of Electrical and Electronic EngineeringNanyang Technological University639798Singapore 

出 版 物：《Chinese Journal of Electrical Engineering》 (中国电气工程学报（英文）)

年 卷 期：2020年第6卷第4期

页      面：86-96页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0807[工学-动力工程及工程热物理] 0802[工学-机械工程] 0811[工学-控制科学与工程] 

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. 

主　　题：Permanent-magnet machine rotor losses sleeve eddy-current concentrated-windings 

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.