基于触头动态接触压力的触头弹跳分析

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Abstract By using polyvinylidene fluoride (PVDF) piezoelectric film as the sensitive element under an trial product of CJ20-25 AC contactor,the dynamic contact pressure signal of the two contacts on the bridge of one main contact are measured under the principle of elastic wave.The contact vibration and swing in the moving process are then recorded with high speed camera.The contacts contact pressure signal then undergoes noise reduction using wavelet toolbox.The relationship between the contact bounce and the break-connection of the contact and the closing phase angle are studied respectively.The results indicate that the dynamic contact pressure signal can reveal the reason for the change of the contact bounce and the break-connection signal,and 60° closing phase angle will lead to the worst overall performance.

Key words： Contact pressure contact bridge contact bounce PVDF dangerous vibration

Received: 19 December 2014 Published: 22 May 2015

PACS:

TM315

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	Articles by authors
	Li Junfeng
	Su Xiuping
	Zheng Xinfang
	Zhao Jingying

Cite this article:

Li Junfeng,Su Xiuping,Zheng Xinfang等. Analysis of the Contact Bounce Based on Dynamic Contact Pressure[J]. Transactions of China Electrotechnical Society, 2015, 30(9): 138-144.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2015/V30/I9/138

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