多参数优化方法减小永磁电机齿槽转矩  

Multi-Parametric Minimisation of Cogging Torque in Permanent Magnet Machines

作　　者：王慧[1] 王艾萌[1] 王春梅[1] 

机构地区：[1]华北电力大学,保定071003

出　　处：《微特电机》2014年第8期43-46,共4页Small & Special Electrical Machines

基　　金：河北省自然科学基金项目(E2012502018);中央高校基本科研业务费专项资金项目(13MS76)

摘　　要：将转子分段斜极和优化极弧系数两种方法相结合,研究其对永磁电机齿槽转矩的影响。采用有限元分析方法,对一台电机在不同分段数时的齿槽转矩进行了计算。结果表明分段斜极能使齿槽转矩的某些谐波分量大幅度地削弱,但对其它谐波分量削弱幅度有限;进而通过优化极弧系数,使剩余谐波分量显著减小,使得齿槽转矩最小化。试验结果与有限元仿真结果基本吻合,验证了该方法对减小齿槽转矩的有效性。The influence of optimal magnet pole-arc and rotor step skewing on cogging torque of permanent magnet machines was studied.Based on finite element analysis,the cogging torque and back EMF with different axial magnet segments were calculated.Step skewing of rotor magnets was an efficient method for minimization of cogging torque,but the effect was limited.The cogging torque can be reduced significantly when the optimal magnet pole-arc to pole-pitch ratio was employed.The comparison between experimental results and the results of finite-element analysis verifies the validity of the method which can weaken the cogging torque effectively.

关 键 词：分段斜极 优化极弧系数 永磁电机 齿槽转矩 

分 类 号：TM351[电气工程—电机]