6SE70逆变器IGBT故障分析与对策

Analysis and Countermeasures for IGBT Failure of 6SE70 Inverter

针对某公司小型棒材连轧6SE70系列传动柜频繁发生IGBT爆管问题,具体分析了引发故障的设计容量不足、控制电路故障、操作原因、编码器和柜体安装缺陷五大主要原因,并介绍了所采取的针对性的预防措施。经过近几年的攻关,该故障已经得到有效控制。

Aiming at that the IGBT failure may be occurred freguently in the 6SE70 series cabinet of small size bar rolling line of one company,five main reasons such as the lack of design capacity,control circuit failure,misoperation,encoder and cabinet installation defects were analyzed in detail,and the preventive measures were introduced. After recent years of research,the fault has been effectively controlled.