| 轧机交交变频主传动系统电流失控故障分析 |
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| 引用本文： | 李振兴,刘相华.轧机交交变频主传动系统电流失控故障分析[J].轧钢,2010,27(1):48-50. |
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| 作者姓名： | 李振兴 刘相华 |
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| 作者单位： | 东北大学轧制技术及连轧自动化国家重点实验室 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 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。
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| 关 键 词： | 轧机主传动 交交变频 电流失控 误触发 |
Analysis of Motor Current Out-of-control in Main Drive System of Rolling Mill |
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| LI Zhen-xing,LIU Xiang-hua.Analysis of Motor Current Out-of-control in Main Drive System of Rolling Mill[J].Steel Rolling,2010,27(1):48-50. |
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| Authors: | LI Zhen-xing LIU Xiang-hua |
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| Affiliation: | LI Zhen-xing~(1,2),LIU Xiang-hua~1 (1.State Key Laboratory of Rolling & Automation,Northeastern University,Shenyang 110004,China,2.Beijing Shougang Automation Information Technology Co.,Ltd.,Beijing 100041,China) |
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| Abstract: | 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 measur... |
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| Keywords: | main drive system of mill AC-AC frequency conversion current out of control false triggering |
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