新型外转子低速直驱永磁游标电机的损耗

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Abstract In this paper, the loss of a new low speed vernier machine is calculated based on the 2D time-stepping finite element method. The eddy current losses in the permanent magnet(PM) and the outer aluminum case are taken special consideration. For the eddy current loss in PM, the 3D time-stepping method is compared with the 2D one and the key points for the calculation of eddy loss in PM is highlighted. For the eddy current loss in the outer aluminum case, different influence parameters are analyzed and the method to reduce it is proposed. The calculated no-load loss is verified by experiment on a prototype machine. The loss calculations under different load conditions are also carried out. At the last, the influence of temperature variation on the loss characteristics is also analyzed.

Key words： PM machine loss calculation coupled electromagnetic-thermal analysis vernier machine

Received: 20 August 2014 Published: 14 April 2015

PACS:

TM351

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	Articles by authors
	Zhu Sa
	Cheng Ming
	Li Xianglin
	Li Shun

Cite this article:

Zhu Sa,Cheng Ming,Li Xianglin等. Loss Analysis of a New Low-Speed Direct-Drive Permanent-Magnet Vernier Machine[J]. Transactions of China Electrotechnical Society, 2015, 30(2): 14-20.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2015/V30/I2/14

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