继电器电磁机构电磁-热耦合模型建立与计算方法

doi:10.19595/j.cnki.1000-6753.tces.151619

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Abstract The heat generated by the coil and the environment temperature will affect the dynamic characteristics of relay electromagnetic mechanism. The ignorance of the temperature impacts will decrease the calculating accuracy of dynamic characteristics. To resolve the issue, an electromagnetic- thermal coupling model was established by finite element method, based on mathematic equations of dynamic characteristics and thermal calculation. Considering the similarity principle, the temperature coefficient of resistance and J-A model, a completed coupling model was built in the paper by the combined simulation of a finite element software and Matlab/Simulink. In this model, the conduct thermal coefficient, coil resistance and the soft-magnetic material's properties are considered. The coupling modeling method was used to analyze the dynamic characteristics of high power dc relay GL200 in different environmental temperatures and repeated short working condition. The experimental results of the coupling model are more reasonable than those without considering the temperature impacts.

Key words： Electromagnetic mechanism combined simulation electromagnetic-thermal coupling temperature coefficient of resistance J-A model

Received: 30 September 2015 Published: 19 July 2017

PACS:

TM581.3

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	Articles by authors
	Yang Wenying
	Guo Jiuwei
	Wang Ru
	Zhai Guofu

Cite this article:

Yang Wenying,Guo Jiuwei,Wang Ru等. Establishing and Calculating Methods of Electromagnetic-Thermal Coupling Model of Relay’s Electromagnetic Mechanism[J]. Transactions of China Electrotechnical Society, 2017, 32(13): 169-177.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.151619 OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I13/169

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