摘要
本文研究了三种不同退磁方式对永磁游标电机的电磁性能的影响,建立了永磁游标电机的退磁解析模型。该解析模型建立在精确保角映射的基础上,能准确地反映永磁游标电机的有槽气隙与无槽气隙之间的关系,从而准确计算磁场分布。针对永磁游标电机的退磁分析中存在的问题,提出了退磁电流与退磁永磁体之间的等效变换,在此基础上通过完全保角映射后得到准确的退磁磁场分布。最后采用有限元分析验证了永磁游标电机退磁解析模型。
This paper investigated the demagnetization of permanent-magnet vernier machine based on analytical models.Three kinds of demagnetization were considered to show its influence on the electromagnetic performance.Therefore,the characteristic of demagnetization for permanent-magnet vernier machine can be analytically obtained.The analytical model was based on the exact conformal mapping,which can exactly show the relationship between slotted and slotless air-gap of permanent-magnet vernier machine.The equivalent transformation between demagnetize PM and dot current was proposed to make sure that the exact conformal mapping was suitable for the electromagnetic analysis of permanent-magnet vernier machine.Finally,the high accuracy under demagnetization condition was validated by finite element analysis.
作者
姜洋
张健
JIANG Yang;ZHANG Jian(School of Modern Information Technology, Zhejiang Institute of Mechanical & Electrical Engineering, Hangzhou 310053, China;Zhejiang Provincial Key Laboratory of Electrical Machine Systems, College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)
出处
《微电机》
2021年第4期6-10,共5页
Micromotors
基金
宁波市科技创新2025重大专项(2018B10034)
2019年度高校国内访问工程师“校企合作项目”(FG2019072)。
关键词
退磁
解析法模型
永磁游标电机
demagnetization
analytical model
permanent-magnet vernier machine
