摘要
针对永磁同步电机(PMSM)反电动势中含有谐波的问题,提出了一种磁极形状优化方法以改善PMSM反电动势波形,使得反电势更接近正弦波。建立了磁极表面正弦弧轮廓的描述方程,与传统的偏心圆弧法进行了有限元对比分析,得出同等条件下正弦弧磁极的反电动势畸变率更小。同时进行了样机试验,结果分析表明,通过正弦弧方法优化后的反电动势削弱了谐波,波形的正弦度更好。
A method of magnetic pole shape optimization was proposed due to the harmonics problem existing in the back-EMF of permanent magnet synchronous machine. The sin-arc equations were established to describe the surface of magnetic poles. The FEA comparative study between the methods of traditional eccentric circular-arc and proposed sin-arc were carried out. Prototype test results show that the THD of back-EMF are reduced by using sin-arc method, then the induced voltage more approaches to a sine wave.
出处
《微电机》
2017年第2期24-26,40,共4页
Micromotors
基金
河南省高校重点科研项目(16A470026)
郑州轻工业学院博士基金(2014BSJJ040)
郑州轻工业学院研究生科技创新基金(2015020)
