两种不同转子结构的永磁无轴承同步磁阻电机性能分析  

Performance analysis of two kinds of permanent magnet assisted bearingless synchronous reluctance motors with different rotor structure

作　　者：朱熀秋[1] 高敏[1] 计宗佑 ZHU Huang-qiu;GAO Min;JI Zong-you(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12期43-54,共12页Electric Machines and Control

基　　金：国家自然科学基金(61973144);江苏高校优势学科建设工程(三期)资助项目(PAPD-2018-87)。

摘　　要：为了研究不同永磁体添加位置以及充磁方式对永磁辅助式无轴承同步磁阻电机(permanent magnet assisted bearingless synchronous reluctance motor,PMa-BSynRM)性能的影响,设计了两种不同转子结构的PMa-BSynRM,并对它们的性能(转矩和悬浮力性能、热性能和振动特性)进行了评价和比较。首先介绍了PMa-BSynRM的基本结构和工作原理,推导了数学模型。然后,利用有限元软件对两种PMa-BSynRM的电磁特性分析,热分析和振动分析结果进行对比,并选取了性能较好的转子结构。最后,搭建了PMa-BSynRM实验平台进行了实验研究。研究结果表明,在q轴方向添加永磁体切向充磁的PMa-BSynRM的各项性能均得到提升,其中,电机的转矩脉动和悬浮力脉动分别降低了24.8%和51.23%,平均转矩提高了21.88%。For the purpose of studying the influence of different position and magnetizing direction of permanent magnets(PMs)on the performance of permanent magnet assisted bearingless synchronous reluctance motor(PMa-BSynRM),two new PMa-BSynRMs with different rotor structures are designed,and their characteristics(torque and suspension force performance,thermal and vibration characteristics)are evaluated and compared.Firstly,the basic structure and operation principle of the PMa-BSynRM were introduced,and the mathematical model was deduced.Then,the electromagnetic characteristics,thermal and vibration analysis results of the two PMa-BSynRMs were compared by finite element analysis software,and the rotor structure with better performance was selected.Finally,the PMa-BSynRM experimental prototype platform was constructed.The results show that the performance of the PMa-BSynRM with tangential magnetization permanent magnet positioned in the q axis is improved,in which the torque ripple and suspension ripple of the motor are reduced by 24.8%and 51.23%,respectively,and the average torque is increased by 21.88%.

关 键 词：无轴承电机 同步磁阻电机 永磁辅助 电磁特性分析 热分析 振动分析 

分 类 号：TM352[电气工程—电机]