电工技术学报  2018, Vol. 33 Issue (11): 2423-2430    DOI: 10.19595/j.cnki.1000-6753.tces.171485
电机与电器 |
轴向磁通轮毂电机电磁力波灵敏度分析和优化
左曙光, 刘洋, 邓文哲
同济大学新能源汽车工程中心 上海 201804
Sensitivity Analysis and Optimization of Electromagnetic Force Wave of an Axial-Flux in-Wheel Motor
Zuo Shuguang, Liu Yang, Deng Wenzhe
Clean Energy Automotive Engineering Center Tongji University Shanghai 201804 China
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摘要 

对于轴向磁通电机,轴向电磁力波是其主要的噪声源。以轴向磁通轮毂电机为研究对象,建立有限元参数化模型,应用该模型,采用永磁体厚度、气隙长度、永磁体倒角长度、槽口宽度、定子齿开孔半径5个结构参数设计正交试验,并进行轴向电磁力波的结构参数灵敏度分析。基于正交试验的结果,通过BP神经网络分别建立了5个结构参数与主要轴向电磁力波幅值和平均转矩之间的数学模型,进而以降低主要轴向电磁力波幅值和提高平均转矩为优化目标,采用多目标遗传算法对电机的结构参数进行优化。有限元计算结果显示,优化后的结构参数组合不仅可以有效降低电机的电磁噪声,而且改善了电机的输出性能。

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左曙光
刘洋
邓文哲
关键词 轴向磁通轮毂电机轴向电磁力波正交试验灵敏度分析优化    
Abstract

The axial electromagnetic force wave is the main noise origin for axial flux motor. A finite element method parametric model was built up based on axial-fluxin-wheel motor (AFWM). Based on the parametric model, the orthogonal experiment was designed with taking the thickness of permanent magnet, the length of air gap, the chamfer length of permanent magnet, the width of stator slot, and the hole of stator tooth as structural parameters. And sensitivity analysis for structural determinants that can affect axial electromagnetic force wavewas carried out. Based on the resultof orthogonal experiment, the mathematical model of calculating mainly axial electromagnetic force amplitude and average torque was established respectively by BP neural network. Then with the optimization goal of reducing the main axial force amplitude and improving the average torque, the multi-objective genetic algorithm was adopted to optimize the structural parameters of the motor. The FEM results show that the most optimized structural parameterscombination not only can effectively reduce the electromagnetic noise and improve the output performance of the motor.

Key wordsAxial-fluxin-wheel motor    axial electromagnetic force wave    orthogonal experiment    sensitivity analysis    optimization   
收稿日期: 2017-10-31      出版日期: 2018-06-13
PACS: TM351  
基金资助:

国家自然科学基金项目(51375343)和国家重大科学仪器开发专项项目(2012YQ150256)资助

通讯作者: 左曙光 男,1968年生,教授,博士生导师,研究方向为电机振动与噪声控制等。E-mail:sgzuo@tongji.edu.cn   
作者简介: 刘 洋 男,1992年生,硕士研究生,研究方向为轴向磁通电机电磁力影响分析等。E-mail:18696561825@163.com
引用本文:   
左曙光, 刘洋, 邓文哲. 轴向磁通轮毂电机电磁力波灵敏度分析和优化[J]. 电工技术学报, 2018, 33(11): 2423-2430. ZuoShuguang, Liu Yang, Deng Wenzhe. Sensitivity Analysis and Optimization of Electromagnetic Force Wave of an Axial-Flux in-Wheel Motor. Transactions of China Electrotechnical Society, 2018, 33(11): 2423-2430.
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