作　　者： ; ;

机构地区： 东北大学材料与冶金学院轧制技术及连轧自动化国家重点实验室

出　　处： 《轧钢》 2010年第1期48-50,共3页

摘　　要： 针对某热带连轧机主传动出现电流失控的问题,分析了交交变频调速装置的电磁干扰因素及抗干扰措施,找到了产生误触发脉冲的干扰通道,通过改造原功率柜内的脉冲触发板,即在输出到零电流检测环节的脉冲通道中增加阻断电路,切断电磁干扰进入触发板的通道,解决了电流失控故障,提高了系统的稳定性。 The fault of current out-of-control in main drive system of a hot strip mill with AC-AC frequency conversion was studied.It was analyzed the issues of electromagnetic interference in operation,electromagnetic interference factors of thyristor trigger link and anti-interference ability.The causes of current out-of-control and pulse interference channel were found out.The solutions were proposed which is to cut off the path of electromagnetic interference by adding an isolation circuit.After taking the measures the problem was solved.

关 键 词： 轧机主传动 交交变频 电流失控 误触发

领　　域： [金属学及工艺]