基于分块永磁磁极的永磁电机齿槽转矩削弱方法

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Abstract Based on the periodicity of cogging torque, the effect of permanent magnet segmentation on the cogging torque of surface-mounted permanent magnet motor is studied by superposition method in this paper. In this method, the permanent magnet pole is separated into several elementary magnet blocks. The total cogging torque is the sum of all the cogging torque of elementary magnet blocks. The distribution of the cogging torque of magnet blocks has great effect on the total cogging torque. The cogging torque can be greatly reduced by suitable selection the number of magnet blocks and width of magnet blocks. The method too btain the number of magnet blocks and width of magnet blocks is studied with analytical method. At last, the conclusions are verified by finite element method.

Key words： Permanent magnet motor magnet segmentation finite element method cogging torque

Received: 25 April 2011 Published: 20 March 2014

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TM351

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	Yang Yubo
	Wang Xiuhe
	Zhu Changqing

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Yang Yubo,Wang Xiuhe,Zhu Changqing. Effect of Permanent Magnet Segmentation on the Cogging Torque of Surface Mounted Permanent Magnet Motors[J]. Transactions of China Electrotechnical Society, 2012, 27(3): 73-78.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I3/73

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