晶闸管开关电路在低压电器电寿命试验中的应用与分析  

Application and Analysis of Thyristor Switch in Electrical Endurance Test of Low Voltage Electrical Apparatus

作　　者：杨祥[1] 蒋凡[1] 马琳[2] 

机构地区：[1]苏州西门子电器有限公司,江苏苏州215129 [2]西门子(中国)有限公司中国研究院,北京100102

出　　处：《电器与能效管理技术》2014年第19期33-37,67,共6页Electrical & Energy Management Technology

摘　　要：采用晶闸管开关电路对较大过程试验电流进行无触点式非物理分断,替代机械开关实现了试验电路中陪试品的功能,极大地降低了产品试验站的硬件投入和人力维护成本,提高了测试效率。分析采用软件滤波的方式实现了波形的优化处理,解决了实际中的问题。最后通过试验,验证了该改造陪试电路的可行性和相应软件滤波方法的正确性。The non-contact thyristor circuit was specified for nonphysical breaking of big test current. In this case it not only has the function of a common mechanical switch as accompanied test samplem（ATS） but also helps to save hardware investment and human maintenance costs, and increases the test efficiency. The SCR thyristor circuit,based on the modification of existing motor-controlled softstarter, was used as silicon-control component. During the period of thyristor circuit modification, the voltage conversion peak and current multi-＂ zero-crossing＂ phenomena occurr because of SCR circuit conversion. The root reasons of these phenomena were analyzed and a software design of filtering waveform was specified to optimize the waveform, with which the actual problem is solved. Finally,with the multi-tests comparison between different calculation method, the practicability of the ATS circuit modification and correctness of software filtering method were validated.

关 键 词：电寿命试验 晶闸管开关电路 无触点式 非物理分断 过零 滤波 

分 类 号：TM506[电气工程—电器]