电动车用永磁同步电机转子结构对弱磁调速性能分析

温嘉斌; 郭晗; 荆超; 刘金辉

doi:10.15938/j.jhust.2019.06.011

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电动车用永磁同步电机转子结构对弱磁调速性能分析

电气与电子工程 | 更新时间：2026-08-31

- 电动车用永磁同步电机转子结构对弱磁调速性能分析
- Analysis of the Speed Adjusting Ability with Field Weakening of Rotor Structure of Permanent Magnet Synchronous Motor for Electric Vehicle
- 哈尔滨理工大学学报 2019年24卷第6期页码：73-78
- 作者机构：
  
  （哈尔滨理工大学电气与电子工程学院,哈尔滨,150080
- 作者简介：
- 基金信息：
- DOI：10.15938/j.jhust.2019.06.011
  中图分类号： TM313
- 纸质出版：2019
- 稿件说明：
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温嘉斌, 郭晗, 荆超, 等. 电动车用永磁同步电机转子结构对弱磁调速性能分析[J]. 哈尔滨理工大学学报, 2019,24(6):73-78.

WEN Jiabin, GUO Han, JING Chao, et al. Analysis of the Speed Adjusting Ability with Field Weakening of Rotor Structure of Permanent Magnet Synchronous Motor for Electric Vehicle[J]. 2019, 24(6): 73-78.
温嘉斌, 郭晗, 荆超, 等. 电动车用永磁同步电机转子结构对弱磁调速性能分析[J]. 哈尔滨理工大学学报, 2019,24(6):73-78. DOI： 10.15938/j.jhust.2019.06.011.

WEN Jiabin, GUO Han, JING Chao, et al. Analysis of the Speed Adjusting Ability with Field Weakening of Rotor Structure of Permanent Magnet Synchronous Motor for Electric Vehicle[J]. 2019, 24(6): 73-78. DOI： 10.15938/j.jhust.2019.06.011.

摘要

摘要:针对电动汽车驱动电机既要满足低速区大转矩输出，同时又要满足高速恒功率区宽弱磁调速范围的特殊要求，提出采用具有铁桥分段的V型永磁同步电动机作为驱动电机。通过分析对比不同转子磁路结构对电机主要运行特性参数的影响表明：同时采用非均匀气隙、V型铁桥分段永磁体、改变相邻磁极间距，不仅有利于改善空载气隙磁密波形，而且也满足增加电机恒功率区弱磁扩速范围和低速区大转矩输出的要求。并采用这种结构设计了20 kW电动汽车驱动用内置式永磁同步电机，结合有限元对电机主要性能进行了电磁计算。

Abstract

Abstract:The Vtype permanent magnet synchronous motor with iron bridge segment is proposed as the driving motor for electric vehicle. This kind of motor needs to have big torque output in the lowspeed region

as well as widespeed adjusting range with field weakening in the highspeed constant power regionBy analyzing and comparing the influence of different rotor magnetic circuit structure on the main parameters of motor running characteristics

we conclude that：the combination of nonuniform air gap

Vshaped iron bridge segmented permanent magnet

and the change of adjacent magnetic pole spacing improve the noload air gap magnetic tight waveform

increase the motor constant power area of the widespeed adjusting range with field weakening

and satisfy the requirement of large torque output in low speed zoneIn this study

a builtin permanent magnet synchronous motor is designed to drive a 20kW electric vehicle

and the performance of the motor is evaluated by finite element method

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