考虑边缘效应和磁饱和影响的闭口槽潜水电机卡特系数计算新方法

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Abstract This paper deals with a new method called equivalent open slot method for calculating the Carter Factor of closed slot submersible motors. Two analytical methods including conventional method and improved method were introduced to calculate the Carter Factor and the results are compared with the finite element method to find a proper analytical method for open slot machine. Then we first proposed that the closed slots can be replaced by open slots because the flux density in the slot bridge is highly saturated. Permeability ratio method and geometric method are introduced to calculate the Carter Factor by considering the fringing effect and the magnetic saturation of the slot bridge. Models with different closed slot types are constructed and finite element computations in turn validated the equivalent open slot method including permeability method and geometric method.

Key words： Equivalent open slot method Carter Factor finite element method(FEM) fringing effect magnetic saturation

Received: 26 March 2014 Published: 14 September 2015

PACS:

TM35

Fund:This work was supported by the National Natural Science Funds of China under Grant (51177033,51377039), Fundamental Research Funds for the Central Universities(2012HGZY0003), and Hefei Hengda Jianghai Pump Co, Ltd

About author:: Bao Xiaohua male, was born in 1972, professor,his main research interests are in the field of motor design, magnetic field analysis, and finite element analysis.Liang Na female,was born in 1993, a postgraduate,her main research interests are in the field of motor design, magnetic field analysis.

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Cite this article:

Bao Xiaohua,Liang Na,Fang Yong等. Novel Method of Evaluation of Carter Factor for Closed Slot Submersible Motor Including Fringing Effect and Magnetic Saturation[J]. Transactions of China Electrotechnical Society, 2015, 30(12): 220-227.

URL:

https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2015/V30/I12/220

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