永磁辅助无轴承同步磁阻电机优化及电磁分析  

Optimization and electromagnetic characteristic analysis of permanent magnet assisted bearingless synchronous reluctance motor

作　　者：朱熀秋[1] 计宗佑 丁海飞[1] ZHU Huang-qiu;JI Zong-you;DING Hai-fei(School of Electrical and Information Engineering,Jiangsu University,Zhenjiang 212013,China)

机构地区：[1]江苏大学电气信息工程学院,江苏镇江212013

出　　处：《电机与控制学报》2020年第4期59-70,共12页Electric Machines and Control

基　　金：国家自然科学基金(61973144);江苏省重点研发计划项目(BE2016150)。

摘　　要：针对无轴承同步磁阻电机(BSynRM)功率因数和转矩密度都较低的缺陷,采用转子附加永磁体的永磁辅助无轴承同步磁阻电机(PMa-BSynRM)。首先介绍具有三层磁障转子的PMa-BSynRM的结构,在详尽阐述电机工作原理的基础上,数学模型由Maxwell张量法推导得出;其次以控制变量法为准则,开展对样机结构选型及参数设计的工作;然后利用有限元软件对PMa-BSynRM的电磁性能计算分析;最后搭建样机实验平台。仿真和实验结果验证了所设计的PMa-BSynRM对提高传统BSynRM的功率因数和转矩密度具有可行性与有效性。In terms of the low torque density and power factor of the traditional bearingless synchronous reluctance motors( BSynRMs),a permanent magnet assisted bearingless synchronous reluctance motor( PMa-BSynRM) is adopted,with permanent magnets installed in its rotor. Firstly,the structure of PMaBSynRM was introduced,with rotor having multi-flux barriers. The mathematical models of radial suspension force and torque were established on the basis of the Maxwell tensor method. Secondly,based on the control variate method,the model selection and parameter design were carried out. Thirdly,the electromagnetic performance of PMa-BSynRM was analyzed by the finite element analysis software. Finally,the experimental prototype platform was built. The finite element analysis and experiment results verifies that it is feasible and effective for the designed PMa-BSynRM to improve the power factor and torque density of traditional BSynRMs.

关 键 词：无轴承电机 同步磁阻电机 永磁辅助 优化设计 电磁特性 有限元分析 

分 类 号：TM352[电气工程—电机]