分块式Halbach型磁钢的永磁同步电机解析

Solution of Permanent Magnet Synchronous Motors with Partition between Poles Halbach Magnet

基于复数气隙磁导,构建了考虑齿槽影响、分块式Halbach型磁钢的永磁同步电机(PMSM)的主磁场、电枢反应磁场、反电动势的解析模型,基于沿槽边Maxwell应力法构建了PMSM的齿槽转矩解析模型,以上几个解析模型考虑了极间隔断对分块式Halbach型磁钢PMSM磁场及性能的影响,通过有限元分析(FEA)与实验验证了解析模型的正确性与实用性。在对解析模型分析的基础上,提出一种性能优于传统分块式Halbach型磁钢的新方案,并通过FEA与实验的方法验证其优越性。

An analytical method for predicting the airgap magnetic field distribution, armature winding flux density distribution and back EMF is presented, which consider the effect of slots by complex relative airgap permeance; an analytical model of PMSM＇s cogging torque is also predicted using Maxwell stress method calculated along slots＇ edge, and all the analytical＇models above consider the effects of partition-between-poles（PBP）, The validity and the correctness of the analytical model are verified through FEA and experiments. On the basis of the analysis of analytical model, an PBP Halbach magnet, which providers better performance of the magnetic field distribution than the traditional Halbach magnet is presented, and then the superiority of the optimized PBP Halbach magnet is also verified further through FEA and experiments.