削弱模块化永磁电机齿槽转矩的新方法

doi:10.11985/2017.02.003

电气工程学报 ›› 2017, Vol. 12 ›› Issue (2): 15-19.doi: 10.11985/2017.02.003

• 理论研究 • 上一篇

削弱模块化永磁电机齿槽转矩的新方法

井立兵^1,²,柳霖¹,高起兴¹,罗正豪¹

^1. 三峡大学电气与新能源学院宜昌 443002
^2. 湖北省微电网工程技术研究中心宜昌 443002

收稿日期:2016-05-12 出版日期:2017-02-15 发布日期:2020-04-11
作者简介:井立兵,男 1982年生,博士,研究方向为特种电机设计与优化、电机电磁场分析计算。|柳霖,男 1990年生,硕士研究生,研究方向为永磁电机电磁场的数值分析与优化设计。
基金资助:
湖北省微电网工程技术研究中心开放基金项目(2015KDW03);三峡大学人才基金项目(KJ2013B078);三峡大学研究生科研创新基金项目(2015CX060,SDYC2016047)

A Novel Method of Weakening the Cogging Torque of Modular Permanent Magnet Motor

Libing Jing^1,²,Lin Liu¹,Qixing Gao¹,Zhenghao Luo¹

^1. China Three Gorges University Yichang 443002 China
^2. Hubei Micro-Grid Engineering Technology Research Center Yichang 443002 China

Received:2016-05-12 Online:2017-02-15 Published:2020-04-11

摘要/Abstract

摘要：

为减小模块化永磁电机的齿槽转矩,结合永磁电机槽口偏移法,提出并讨论了一种新型定子结构,沿圆周方向带有向左和向右的槽开口。由于定子槽开口的机械位移,产生的齿槽转矩分量也移向右侧和左侧。因此,对于一个适当的移动角,齿槽转矩分量的一半和另一半可以移动180°,这使得齿槽转矩分量相互抵消,从而削弱了总的合成齿槽转矩。通过将一个电机的总齿槽转矩看作是由两个电机齿槽转矩叠加而成的方法,使得分析方法更加简单易懂,并给出了槽口偏移的表达式。实验仿真表明,该方法能够有效削弱模块化永磁电机的齿槽转矩,并将转矩波动控制在额定转矩的2%以下。

关键词: 模块化永磁电机, 槽口偏移, 齿槽转矩, 转矩波动, 有限元分析

Abstract:

A new structure of stator combing the slot opening shift of the permanent magnet motor is discussed in the paper in order to reduce the cogging torque of modular permanent magnet motor. The generated cogging torque components are shifted also to the right and to the left due to the mechanical displacement of stator slot opening. Therefore, for an appropriate shifting angle, the cogging torque components for the one-half and the second half can be shifted by 180°, and the cogging torque components can be mutually offset, then the total cogging torque can be reduced. By the method of regarding the total cogging torque of one motor as the addictive cogging torque of two motors, the expression of slot opening shift has been given. The experimental simulation shows that the method can effectively weaken the cogging torque of modular permanent magnet motor, and can keep the torque ripple under the 2% of the rated torque.

Key words: Modular permanent magnet motor, slot-opening shift, cogging torque, torque ripple, finite element analysis

中图分类号:

TM464
V44

井立兵,柳霖,高起兴,罗正豪. 削弱模块化永磁电机齿槽转矩的新方法[J]. 电气工程学报, 2017, 12(2): 15-19.

Libing Jing,Lin Liu,Qixing Gao,Zhenghao Luo. A Novel Method of Weakening the Cogging Torque of Modular Permanent Magnet Motor[J]. Journal of Electrical Engineering, 2017, 12(2): 15-19.

图/表 11

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参考文献 13

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参数	数值
永磁体内径/mm	63
永磁体外径/mm	75
定子内径/mm	77
定子外径/mm	140
气隙/mm	1
铁心轴长/mm	65
极对数p	5
槽数N	12
剩磁B_r/T	1.2
负载电流I_f/A	100
额定转矩T /Nm	12
转速n /rpm	1 000

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削弱模块化永磁电机齿槽转矩的新方法

A Novel Method of Weakening the Cogging Torque of Modular Permanent Magnet Motor

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