表贴式永磁同步电机削极技术的研究  

Research on Pole Cutting of Surface Mount Permanent Magnet Synchronous Motor

作　　者：王芳 

机构地区：[1]华中科技大学自动化学院,武汉430000 [2]武汉铁路职业技术学院机电学院,武汉430033

出　　处：《船电技术》2018年第2期41-45,共5页Marine Electric & Electronic Engineering

摘　　要：影响永磁同步电动机振动噪声的主要是电磁震动,一台好的电机应是气隙磁场谐波小,产生的齿槽转矩及转矩脉动小。通过对电机转子表面永磁体削极,使得电机气隙磁场接近正弦可显著减小永磁电机气隙磁场谐波及径向力谐波,减小永磁同步电机齿槽转矩。用解析法研究了电机气隙磁场优化方法和齿槽转矩的削弱方法,对表贴式永磁交流电机几种主要的削极方式进行了理论研究,总结了各种削极技术的优势和特点,通过有限元验证本次理论研究的正确性,对改善永磁交流电机性能有十分重要的实用价值。The electromagnetic vibration and noise of permanent magnet synchronous motor is the main source of noise and vibration, a good motor should be small in the air gap magnetic field harmonic, cogging torque and torque ripple. The permanent magnet rotor surface cutting makes the motor air gap magnetic field near sinusoidal, which can be significantly reduced the air gap harmonic magnetic field and radial force harmonics, and reduce the cogging torque of permanent magnet synchronous motor. The method of optimizing the air gap magnetic field and the method of reducing the cogging torque are studied by use of analytic method, and several main chipping methods for permanent magnet AC motor are theoretically studied. The advantages and characteristics of various cutting technology are summarized, and the correctness of this theoretical study is verified by use of finite element method, which has practical value for improving the permanent magnet AC motor performance.

关 键 词：削极技术 表贴式永磁交流电机 永磁体 转矩脉动 齿槽转矩 

分 类 号：TM351[电气工程—电机]