无轴承永磁同步电动机永磁体参数优化设计  

Optimization Design of Permanent Magnet on Bearingless Permanent Magnet Synchronous Motors

作　　者：朱熀秋[1] 范海燕[1] 李烽[1] 

机构地区：[1]江苏大学电气信息工程学院,镇江212013

出　　处：《微电机》2007年第9期37-40,共4页Micromotors

基　　金：江苏省高技术研究(BG2005027);教育部留学回国人员科研启动基金;江苏大学高级人才科研启动基金项目

摘　　要：介绍了无轴承永磁同步电动机径向悬浮力产生原理。通过对比各种永磁体材料的性能和不同转子磁路结构特点,确定采用钕铁硼稀土永磁体,选择转子表面凸装式结构;从理论上分析了径向悬浮力与永磁体厚度、径向悬浮力绕组电流之间的关系;采用有限元方法,在考虑磁路饱和及非线性情况下,对实验样机径向悬浮力进行了计算和分析。研究结果对无轴承永磁同步电动机如何获得最大径向悬浮力以及电动机的优化设计具有参考价值。In this paper, the principle of radial suspension forces production for bearingless permanent magnet synchronous motors （BPMSM） is introduced. The NdFeB permanent magnet is adopted in this machine comparing with other material, and salience-type magnets on surface are used for designing and fixing. The variation relation between radial forces, the thickness of permanent magnet and currents in radial force windings is also studied in the theory. Then the radial suspension forces of BPMSM used in practice are accounted and analyzed considering magnetic circuit saturation and nonlinearity by adopting finite element method （FEM）. The study results provide reference value for obtaining maximal radial suspension forces and optimizing and designing BPMSM.

关 键 词：无轴承 永磁同步电动机 径向悬浮力 有限元方法 优化设计 

分 类 号：TM341[电气工程—电机] TM351