高速永磁风力发电机极靴式磁极结构优化设计  

Optimal Design of Pole Shoe Structure for High-Speed Permanent Magnetic Wind Turbine

作　　者：迟长春[1] 练正兵 

机构地区：[1]上海电机学院电气学院,上海201306 [2]上海海通国际汽车物流有限公司,上海200137

出　　处：《上海电机学院学报》2015年第4期185-190,共6页Journal of Shanghai Dianji University

基　　金：上海市自然科学基金项目资助(12ZR1411700)

摘　　要：为保证高速永磁发电机磁钢固定、稳定,降低生产磁钢的加工成本,克服其气隙磁密正弦性差、齿槽转矩大等问题,提出了一种极靴式转子磁极结构。该结构可以统一磁钢为平板形的永磁体,加工过程简单、废品率低、造价低廉;通过螺钉将该结构固定在转子上,可以保证磁钢放置安全。使用有限元分析软件对该极靴结构的厚度、宽度、偏心距进行参数化优化分析,仿真结果表明,极靴越厚、越宽,交、直轴电感越大,空载电势越小;极靴偏心距的优化可以降低气隙磁密谐波含量、电动机的齿槽转矩,但电动机的空载漏磁系数会有一定的增加。To ensure fixing stability of high speed permanent magnet generator,reduce processing cost,improve sine degree of the air gap flux density waveform,and reduce cogging torque,apole shoe rotor magnetic pole structure is proposed.This structure can unify magnets for the flat shape of a permanent magnet,simplify process,lower rejection rate and reduce price.The magnetic steel is placed safely by the screw.Finite-element-analysis software is used to perform optimization analysis for thickness and width of the structure of the pole shoe,and eccentricity.The results show that the thicker and wider the pole shoe,the bigger the d-q axis inductance,and the smaller the no-load EMF.Optimization of the pole shoe eccentricity can reduce the air gap flux density harmonic content,the cogging torque of the motor,but increase no-load magnetic flux leakage coefficient of the motor.

关 键 词：高速永磁风力发电机 磁极形状 偏心 齿槽转矩 气隙磁密 

分 类 号：TM315[电气工程—电机]