永磁直线无刷直流电动机磁阻力最小化研究  

Research on Minimizing Detent Force of Linear Permanent Magnet Brushless DC Motor

作　　者：杜卫民[1] 汪旭东[1] 许孝卓[1] 封海潮[1] 

机构地区：[1]河南理工大学,河南焦作454003

出　　处：《微特电机》2008年第11期9-11,14,共4页Small & Special Electrical Machines

摘　　要：为减小由齿槽效应引起的永磁直线无刷直流电动机的磁阻力,运用叠加原理与数值分析相结合的方法对磁阻力进行分析,发现磁阻力为每对永磁体叠加而成,且波形为正弦波。因此,合理地移动每对永磁体,使它们叠加的磁阻力合力最小,即通过磁极偏移的方法来减小磁阻力。根据计算出每对永磁体移动的距离,利用仿真软件进行了仿真。仿真结果表明磁阻力大大降低,特别是当极对数为偶数时,磁阻力几乎为零。To reduce detent force of linear permanent brushless DC motor caused by the slot effect, the superposition principle and numerical analysis regress analysis were employed to analyze and found that detent force was formed by every time permanent magnet superimposition, also the profile was a sine wave. Therefore, the movement of every reasonable to permanent magnet so that they superimposed the smallest detent force, that was through the magnetic pole migration methods to reduce the detent force. Calculated on the basis of each permanent magnet mobile distance, it was emulated by simulation software. Simulation results showed that the detent force greatly reduced, especially when the number of ploes was even, can better reduce dentent force.

关 键 词：永磁直线无刷直流电动机 磁阻力 磁极偏移 

分 类 号：TM33[电气工程—电机] TM359.4