连退机组传动系统预充电回路原理及应用  

THE PRINCIPLE AND APPLICATION OF PRECHARGING CIRCUIT OF THE DRIVE EQUIPMENT IN THE CONTINUOUS ANNEALING LINE

作　　者：张晋峰 刘靖 张兴 Liu Jing;Zhang Xing(Shougang Zhixin Qian'an Electromagnetic Material Co.Ltd.,Qianan 064400,China)

机构地区：[1]首钢智新迁安电磁材料有限公司,迁安064400

出　　处：《冶金信息导刊》2023年第3期59-61,共3页Metallurgical Information Review

摘　　要：预充电单元是电压源型交流变频装置的重要组成部分,用于在逆变器投入运行前给逆变单元内置电容元件安全充电,避免上电时强大的冲击电流烧损功率模块和内置电容。针对连退机组传动装置的原有设计问题,在分析研究预充电回路运行原理的基础上,通过设备改造增加了开卷机和卷取机的逆变单元预充电回路,具备了该传动装置独立故障处理条件,消除了机组非计划停机的设备隐患,为持续稳定生产提供了设备支撑。Pre-charging units are an important component of voltage-source AC frequency converters,used to safely charge the internal capacitors of the inverter unit before it starts operating,to prevent strong surge currents from damaging the power modules and internal capacitors during power-up.However,in response to design issues with the drive unit of the continuous annealing line,this paper analyzes the operating principles of pre-charging circuits and adds pre-charging circuits for the inverter unit of the uncoiler and recoiler through equipment modification.As a result,the drive system now has independent fault handling capabilities and the potential for unplanned unit shutdowns due to equipment hazards has been successfully eliminated,providing equipment support for continuous stable production.

关 键 词：预充电 逆变单元 变频装置 

分 类 号：TM4[电气工程—电器]