基于Halbach阵列与组合型磁极相结合的表贴式永磁电机优化设计  

Optimization of Surface Mounted Permanent Magnet Moter Based on Halbach Array and Modular Poles

作　　者：刘明基[1] 赵伟波 赵海森[1] 王永田[1] 张冬冬[1] 

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,北京102206

出　　处：《电机与控制应用》2016年第2期36-41,共6页Electric machines & control application

基　　金：北京市科技计划项目(Z141100003814007)

摘　　要：为了减小表贴式永磁电机气隙磁场中谐波含量过高所带来的电机性能下降的影响,提出了Halbach磁体阵列与组合型磁极相结合的转子结构。基于时步有限元计算软件,利用田口法正交试验,以谐波畸变率THD和气隙磁密基波幅值大小为评价标准,优化设计了4极永磁电机的转子结构参数。优化参数包括:磁钢厚度、组合磁极的磁极配比、Halbach充磁夹角、较小磁能积的永磁材料的矫顽力大小。通过对比优化前后气隙磁通密度谐波含量,验证了该优化方法的有效性。In order to reduce the performance degradation caused by high harmonic content in air gap magnetic field,a novel surface mounted permanent magnet rotor with modular poles and Halbach array was proposed,taking the THD of the air gap magnetic flux density and its magnitude as the evaluation index. Based on the time stepping finite element analysis and Taguchi method,the structure parameters of the rotor were optimized. The optimization parameters included permanent magnet thickness,modular pole ratio,Halbach magnetizing angle,and the coercivity of magnetic material. The advantage of the optimization method was verified by comparing the harmonic content of the air gap flux density before and after optimization.

关 键 词：表贴式永磁电机 Halbach磁体阵列 组合型磁极 时步有限元 田口法 

分 类 号：TM351[电气工程—电机]