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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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

Received: 05 July 2015 Published: 26 December 2016

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TM351

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	Tang Xu
	Wang Xiuhe
	Tian Mengmeng
	Meng Xiaoxue

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Tang Xu,Wang Xiuhe,Tian Mengmeng等. Study of Reduction Methods of Cogging Torque in Line-Start Permanent Magnet Synchronous Motor by Changing the Parameters of Stator Teeth and Slots[J]. Transactions of China Electrotechnical Society, 2016, 31(23): 1-8.

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

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