Halbach阵列永磁型无轴承电机特性研究  

Characteristics Research on Permanent Magnet Type Bearingless Motor with Halbach Array

作　　者：张涛[1] 倪伟[1] 张晨[1] 王晓晖[1] 贾红云[2] 

机构地区：[1]淮阴工学院电子与电气工程学院,江苏淮安223005 [2]南京信息工程大学信息与控制学院,江苏南京210044

出　　处：《电机与控制应用》2015年第2期47-51,72,共6页Electric machines & control application

基　　金：江苏省自然科学基金资助项目(BK2012462;BK20130418);江苏高校自然科学研究项目(13KJB470001)

摘　　要：在分析永磁型无轴承电机径向悬浮力产生机理及转子永磁体Halbach阵列基础上,设计了一种Halbach阵列永磁型无轴承电机,采用耦合电路瞬态有限元分析方法对径向磁化永磁转子和Halbach阵列永磁转子的气隙磁密波形及高次谐波、径向悬浮力、反电动势及转矩进行比较分析。研究结果表明:永磁型无轴承电机转子永磁体采用Halbach阵列结构能显著提高气隙磁密幅值及其正弦特性,增大径向悬浮力与转矩,减小悬浮力、转矩及反电动势的脉动。A new kind of permanent magnet type with Halbach array was designed based on the analysis on suspension principle of permanent magnet type bearingless motor and Halbach array of rotor permanent magnet. By using the transient finite element method coupled with circuits, some motor performance including air-gap magnetic flux density, high order harmonics, radial suspension, back electromotive force（ EMF） and torque were compared. The comparison results showed that the permanent magnet type bearingless motor with Halbach array could improve the sinusoidal characteristics, amplitude of air-gap magnetic flux density, torque and radial suspension force, and reduce the ripples of radial suspension force, torque and back EMF.

关 键 词：永磁型无轴承电机 永磁电机 HALBACH阵列 有限元分析 耦合电路 

分 类 号：TM351[电气工程—电机]