开关磁阻电机转子径向电磁合力的解析建模

doi:10.19595/j.cnki.1000-6753.tces.180047

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Abstract Due to double salient pole structure and magnetic saturation characteristic of switched reluctance motor (SRM), electromagnetic radial force expression of the rotor during the operation has been lack of a systematic and effective method, which makes it difficult to analyze vibration and noise. In this paper, equivalent circuit and Maxwell stress method was integrated to get radial electromagnetic force formula of rotor excited by a single stator coil. When the six pair windings are excited by square wave current or overlap current, the analytical functions of radial electromagnetic resultant in eccentric rotor are deduced, respectively. The time course and spectrum distribution of radical resultants are analyzed at rated speed. Through the simulation of electromagnetic finite element, it is proved that this analytical model has higher accuracy, which lays a foundation for subsequent rotor’s electromechanical coupling vibration in SRM. The method could also be used to model the radial electromagnetic resultant of the rotor in other SRM with different numbers of stator and rotor poles.

Key words： Switched reluctance motor radial electromagnetic force rotor eccentric electromagnetic finite element

Received: 12 January 2018 Published: 21 March 2019

PACS:	TM301.4
	O44

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	Articles by authors
	Wang Feng
	Wu Zhiqiang
	Li Yajie
	Wang Yuancen

Cite this article:

Wang Feng,Wu Zhiqiang,Li Yajie等. Analytical Modeling of Rotor Radial Electromagnetic Force in Switched Reluctance Motor[J]. Transactions of China Electrotechnical Society, 2019, 34(5): 934-945.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.180047 OR https://dgjsxb.ces-transaction.com/EN/Y2019/V34/I5/934

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