Analytical Calculation and Optimization Design of Central Partially-Segmented Halbach Permanent Magnet Synchronous Hub Motor

GAO Fengyang; LI Mingming; QI Xiaodong; YANG Qiaoli; TAO Caixia

doi:10.7652/xjtuxb202202018

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Analytical Calculation and Optimization Design of Central Partially-Segmented Halbach Permanent Magnet Synchronous Hub Motor

更新时间：2025-05-08

- Analytical Calculation and Optimization Design of Central Partially-Segmented Halbach Permanent Magnet Synchronous Hub Motor
- Vol. 56, Issue 2, Pages: 171-183(2022)
- 作者机构：
  
  兰州交通大学自动化与电气工程学院,兰州,730070
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202202018
  CLC： TM351
- Online First：10 February 2022，
  
  Published：2022
- 稿件说明：
移动端阅览
GAO Fengyang, LI Mingming, QI Xiaodong, et al. Analytical Calculation and Optimization Design of Central Partially-Segmented Halbach Permanent Magnet Synchronous Hub Motor[J]. 2022, 56(2): 171-183.
DOI：

GAO Fengyang, LI Mingming, QI Xiaodong, et al. Analytical Calculation and Optimization Design of Central Partially-Segmented Halbach Permanent Magnet Synchronous Hub Motor[J]. 2022, 56(2): 171-183. DOI： 10.7652/xjtuxb202202018.

摘要

针对永磁同步轮毂电机转矩脉动和涡流损耗大的问题

提出一种主磁极中心部分分段结构。采用Halbach充磁方式

永磁体主磁极中心部分分段

边界磁极与主磁极不等宽不等厚。首先

在二维极坐标系下构建解析模型

采用精确子域模型法

对解析模型在空载、电流源激励及负载下的气隙磁密和转矩进行计算。其次

建立10极12槽永磁同步电机模型并对其进行有限元仿真验证

提出一种分级优化方法

对电机结构参数进行优化

从而达到降低永磁同步电机气隙磁密谐波畸变率、转矩脉动及涡流损耗的目的。最后

与相关8种磁极结构永磁同步电机模型的各项电磁性能展开对比。结果表明:分级多变量多目标优化算法提高了优化效率与精度; 十字型主磁极中心部分分段Halbach永磁同步电机可以显著减小涡流损耗

有利于牵引电机过载运行; H型主磁极中心部分分段Halbach永磁同步电机可以显著降低转矩脉动

提高电磁转矩和机车稳定运行能力。

Abstract

A main magnetic pole central partially-segmented structure is proposed to solve the problem of large torque ripple and eddy current loss in permanent magnet synchronous hub motor. Halbach magnetizing method is adopted for permanent magnets

the central parts of the main magnetic poles are segmented

and the boundary magnetic poles are not equal in thickness and width to the main magnetic poles. Firstly

an analytical model is constructed in the two-dimensional polar coordinate system

and the air gap magnetic density and torque of the analytical model under no-load

current source excitation and load are calculated by using the accurate subdomain model method. Secondly

a 10-pole and 12-slot permanent magnet synchronous motor model is established and verified by finite element simulation

and a hierarchical optimization method is proposed to optimize the motor structure parameters

so as to reduce the air gap magnetic density total harmonic distortion rate

cogging torque and eddy current loss of the permanent magnet synchronous motor. Finally

the electromagnetic performance is compared with that of eight permanent magnet synchronous motor models. The results show that the hierarchical multi-variable multi-objective optimization algorithm improves the optimization efficiency and accuracy. Cross-shaped central segmented Halbach PMSM significantly reduces eddy current loss

which is beneficial to overload operation of traction motor. H-type central segmented Halbach PMSM significantly reduces torque ripple

and improves electromagnetic torque and the stable operation ability of the locomotive.

关键词

Keywords

references

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