基于触头动态接触压力的触头弹跳分析

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摘要根据弹性波原理,以CJ20-25型交流接触器为试验品,采用以压电薄膜为敏感元件制成的触头接触压力传感器,分别测得一相主触头触桥上两个触头的动态接触压力信号,用以研究该相主触头的触头弹跳情况;利用高速摄像机技术分析了触头运动过程中的摆动和振动情况;应用小波工具箱对该触头接触压力信号进行了降噪处理;研究了触头弹跳与触头断通信号的关系以及触头弹跳与合闸相角的关系。由分析结果可见,触头动态接触压力信号可揭示触头弹跳和断通信号的变化原因,合闸相角为60°时,各项指标综合最差。

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	李俊峰
	苏秀苹
	郑新芳
	赵靖英

关键词 ：触头接触压力, 触桥, 触头弹跳, 压电薄膜, 危险振动

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

收稿日期: 2014-12-19 出版日期: 2015-05-22

PACS:

TM315

基金资助:国家自然科学基金(50577015),浙江省低压电气产业技术创新战略联盟分项目(2010LM104-07),河北省高等学校创新团队领军人才培育计划(LJRC003)资助。

通讯作者: 苏秀苹女,1966年生,教授,博士生导师,研究方向为电器现代设计与测试。

作者简介: 李俊峰男,1974年生,讲师,博士研究生,研究方向为电器现代设计与测试。苏秀苹女,1966年生,教授,博士生导师,研究方向为电器现代设计与测试。

引用本文:

李俊峰, 苏秀苹, 郑新芳, 赵靖英. 基于触头动态接触压力的触头弹跳分析[J]. 电工技术学报, 2015, 30(9): 138-144. Li Junfeng , Su Xiuping , Zheng Xinfang , Zhao Jingying. Analysis of the Contact Bounce Based on Dynamic Contact Pressure. Transactions of China Electrotechnical Society, 2015, 30(9): 138-144.

链接本文:

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

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