基于改变定子齿槽参数的异步起动永磁同步电动机齿槽转矩削弱措施研究

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摘要齿槽转矩是永磁电机的共有问题,是该类电机设计中需要重点考虑的问题之一。异步起动永磁同步电动机能够利用笼型转子产生的异步转矩实现自起动,齿槽转矩的存在会对电机的运行产生不利影响。研究了通过改变定子齿槽参数削弱异步起动永磁同步电动机的齿槽转矩,分别推导了改变定子齿宽、定子不等齿宽配合及定子不等槽口宽配合时的齿槽转矩解析表达式,给出了相应地能有效削弱电机齿槽转矩的定子齿槽参数确定方法。有限元计算结果表明,上述措施能有效削弱异步起动永磁同步电动机的齿槽转矩,并且不会对电机性能产生较大影响。

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	唐旭
	王秀和
	田蒙蒙
	孟笑雪

关键词 ：异步起动永磁同步电动机, 齿槽转矩, 定子齿槽参数, 削弱措施, 电机性能

Abstract：Cogging torque is a common problem to permanent magnet machines,and it is one of the issues that should be paid attention to at the design stage.The line-start permanent magnet synchronous motor (LSPMSM) has the self-starting ability by utilizing the asynchronous torque which generated by squirrel-cage,but the cogging torque will adversely affect the operation of LSPMSM.The methods of reducing the cogging torque of LSPMSM by changing the parameters of stator teeth and slots are studied.The analytical expressions of the cogging torque with the changing of the stator tooth width,the pairing of the stator teeth and the pairing of the stator slots are deduced.The corresponding methods of determining the suitable parameters of stator teeth and slots that can effectively reduce the cogging torque of LSPMSM are given.The calculation by finite element method (FEM) shows that the above methods can effectively reduce the cogging torque of LSPMSM and do not significantly affect the motor performance.

Key words： Line-start permanent magnet synchronous motor cogging torque the parameters of stator teeth and slots reduction methods motor performance

收稿日期: 2015-07-05 出版日期: 2016-12-26

PACS:

TM351

基金资助:国家自然科学基金资助项目(51577107)。

作者简介: 唐旭男,1988年生,博士研究生,研究方向为永磁电机。E-mail:holybirdtx@163.com王秀和男,1967年生,教授,博士生导师,研究方向为永磁电机。E-mail:wangxh@sdu.edu.cn(通信作者)

引用本文:

唐旭,王秀和,田蒙蒙,孟笑雪. 基于改变定子齿槽参数的异步起动永磁同步电动机齿槽转矩削弱措施研究[J]. 电工技术学报, 2016, 31(23): 1-8. Tang Xu, Wang Xiuhe ,Tian Mengmeng, Meng Xiaoxue. Study of Reduction Methods of Cogging Torque in Line-Start Permanent Magnet Synchronous Motor by Changing the Parameters of Stator Teeth and Slots. Transactions of China Electrotechnical Society, 2016, 31(23): 1-8.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2016/V31/I23/1

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