轴向磁通电机中Halbach阵列永磁体的解析优化方法

解析优化方法程博 1; 潘光 1; 2; 毛昭勇 1; 2

doi:10.7652/xjtuxb202010009

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轴向磁通电机中Halbach阵列永磁体的解析优化方法

更新时间：2025-07-09

- 轴向磁通电机中Halbach阵列永磁体的解析优化方法
- Analytical Optimi-ation Method for the Halbach Array of Permanent Magnet in Axial Flux Motor
- 西安交通大学学报 2020年54卷第10期页码：77-83
- 作者机构：
  
  1. 西北工业大学航海学院,西安,710072
  2. 西北工业大学无人水下运载技术工业和信息化部重点实验室,西安,710072
- 作者简介：
- 基金信息：
  
  : 2020-03-26。作者简介: 程博(1990—),男,博士生;潘光(通信作者),男,教授,博士生导师。基金项目: 国家重点研发计划资助项目(2016YFC0301300);国家自然科学基金资助项目(51879220)
- DOI：10.7652/xjtuxb202010009
  中图分类号： TM351
- 网络首发：2020-10-10，
  
  纸质出版：2020
- 稿件说明：
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解析优化方法程博 1, 潘光 1, 2, 等. 轴向磁通电机中Halbach阵列永磁体的解析优化方法[J]. 西安交通大学学报, 2020,54(10):77-83.

Analytical Optimi-ation Method for the Halbach Array of Permanent Magnet in Axial Flux Motor[J]. 2020, 54(10): 77-83.
解析优化方法程博 1, 潘光 1, 2, 等. 轴向磁通电机中Halbach阵列永磁体的解析优化方法[J]. 西安交通大学学报, 2020,54(10):77-83. DOI： 10.7652/xjtuxb202010009.

Analytical Optimi-ation Method for the Halbach Array of Permanent Magnet in Axial Flux Motor[J]. 2020, 54(10): 77-83. DOI： 10.7652/xjtuxb202010009.

摘要

为了进一步增大采用软磁复合材料铁心的轴向磁通永磁电机的电磁转矩

针对其不等宽的两段式Halbach阵列永磁体进行解析优化

利用无槽2D等效模型和有槽气隙相对磁导率解析了气隙磁场和电磁性能; 进而基于电磁转矩的导数和复化求积公式推导了使电磁转矩最大化的Halbach阵列最优轴向充磁系数的表达式; 采用轴向磁通永磁电机的3D有限元方法分析验证了气隙磁场、反电动势、电磁转矩以及Halbach阵列最优轴向充磁系数的解析解的准确性。Halbach阵列解析优化的结果表明:当轴向充磁系数为0.82时

轴向磁通永磁电机的电磁转矩达到最大; 最优轴向充磁系数取决于极对数、永磁体厚度、电机径向尺寸和气隙宽度等; 当极对数为5时

最优轴向充磁系数会随着永磁体厚度的增加而减小

而电机径向尺寸的增加会导致最优轴向充磁系数的增大; 气隙宽度对最优轴向充磁系数的影响较小

基本可以忽略。

Abstract

To further increase the electromagnetic torque of the axial flux permanent magnet(AFPM)motor using the soft magnetic composite cores

this paper performs analytical optimi-ation for the two-segment Halbach array of permanent magnets with unequal width. The air-gap magnetic field and electromagnetic performance are calculated by using the slotless 2D equivalent model and the relative permeability of the slotted air gap. Based on the derivative of electromagnetic torque and the composite integration rule

the expression for the optimal pole-arc coefficient of the axial magneti-ation segment to maximi-e the electromagnetic torque is derived. The accuracy of the analytical solutions of the air-gap magnetic field

back electromotive force

electromagnetic torque

and optimal pole-arc coefficient of the Halbach array is verified by a 3D finite element analysis of an AFPM motor. The analytical optimi-ation results of the Halbach array show that: when the pole-arc coefficient is 0.82

the elec

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references

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