大功率转换接触器常闭触头粘接优化研究  

Research on Optimization of Normally-Closed Contacts Adhesion for High-Power Transfer Contactors

作　　者：陈均 刘俊堂 仇国见 马辉 张钉 CHEN Jun;LIU Juntang;QIU Guojian;MA Hui;ZHANG Ding(Guizhou Tianyi Electrical Co.,Ltd.,Zunyi 563000,China;The Military Representative Office of the Air Force Equipment Chengdu Bureau in Zunyi Region,Zunyi 563000,China)

机构地区：[1]贵州天义电器有限责任公司,贵州遵义563000 [2]空装成都局驻遵义地区军事代表室,贵州遵义563000

出　　处：《电器与能效管理技术》2025年第3期70-75,共6页Electrical & Energy Management Technology

摘　　要：基于大量工程经验,大功率转换接触器常闭触头的可靠性低于常开触头,且常闭触头粘接是导致大功率转换接触器失效的重要原因。以大功率转换接触器为研究实例,根据试验问题开展故障树分析。首先确定触头材料抗熔焊性能欠佳和电磁吸力不足是导致大功率转换接触器触头粘接失效的主要原因;然后通过更换触头材料和优化加工方法,提高触头的抗熔焊性能,同时优化电磁系统设计,减小磁间隙,增大电磁吸力。最后,对采取优化方案的样品进行寿命等试验验证。试验结果证明了优化方案的有效性,解决了大功率转换接触器常闭触头粘接问题。Based on the extensive engineering experience,it is known that the reliability of the normally-closed contacts of high-power transfer contactors is lower than that of the normally-open contacts.The adhesion of the normally-closed contacts is an important cause of the failure of high-power transfer contactors.Firstly,taking the high-power transfer contactor as a research object,the fault tree analysis is carried out in accordance with the problems encountered during the testing.It is determined that the poor weld-resistance performance of the contact material and insufficient electromagnetic attraction force are the main causes of the adhesion failure of the contacts of high-power transfer contactors.Subsequently,by replacing the contact material and optimizing the processing methods,the weld-resistance performance of the contacts is enhanced.Meanwhile,the design of the electromagnetic system is optimized to reduce the magnetic gap and increase the electromagnetic attraction force.Finally,the life test and other verifications are conducted on the samples with the optimized solutions.The test results show that the optimized solutions are effective and solve the problem of the adhesion of the normally-closed contacts of high-power transfer contactors.

关 键 词：大功率转换接触器 触头粘接 抗熔焊性能 电磁吸力 

分 类 号：TM572[电气工程—电器]