异步起动表面-内置式永磁转子同步电机特性分析及优化

Characteristic Analysis and Optimization of Line-Start Surface-Mounted and Interior Permanent Magnet Synchronous Motor

提出一种异步起动表面-内置式永磁转子同步电机(LSSIPMSM),LSSIPMSM通过定子旋转磁场和转子起动铜层间的相互作用产生异步起动转矩。采用解析和有限元法相结合的方法对LSSIPMSM进行性能分析及关键参数优化,研究了起动铜层厚度、永磁体厚度等参数对起动性能和同步运行性能的影响,从而确定最优的铜层厚度和永磁体厚度。建立LSSIPMSM的电磁场有限元模型,分析LSSIPMSM在永磁体不同退磁状况下的起动性能和同步运行性能,并通过三维温度场有限元模型分析了不同退磁状况下的温度场分布。通过仿真结果的对比分析,验证了LSSIPMSM具有较好的动态性能和稳态性能。

The line-start permanent magnet synchronous motor without starter devices has a wide range of industrial applications,thus this paper presents a kind of line-start surface-mounted and interior permanent magnet synchronous motor（ LSSIPMSM）,which has a canned conducting layer which made of the copper between the surface-mounted PMs and rotor core. The LSSIPMSM performances were analyzed and the key parameters were optimized based on combinations of analytical method and finite element method. The dynamic,steady state performances of LSSIPMSM with PMs of different heights and canned conducting layers of different thicknesses were investigated. Finally,the optimal parameters were obtained. Electromagnetic finite element model of the LSSIPMSM was established to analyze the starting capability and steady state synchronization,and the temperature field of LSSIPMSM with different demagnetization conditions was researched by 3-dimensional temperature finite element model. The results show that LSSIPMSM has good dynamic and steady state performances.