变频电机绝缘失效机理及延缓措施研究进展  

Research progress on failure mechanism and delay measures of inverter motors insulation

作　　者：袁树楠 高波[1] 白长山 刘凯[1] 吴广宁[1] YUAN Shunan;GAO Bo;BAI Changshan;LIU Kai;WU Guangning(School of Electrical Engineering,Southwest Jiaotong University,Chengdu 611756,China)

机构地区：[1]西南交通大学电气工程学院,四川成都611756

出　　处：《绝缘材料》2024年第8期17-30,共14页Insulating Materials

摘　　要：变频功率器件频繁开断与电机负载特性可导致高频脉冲过电压,进而引发电机绝缘过早失效,给系统稳定性和可靠性带来挑战。本文从变频电机绝缘失效机理出发,首先调研了变频电机绝缘的不同应力失效形式,梳理了绝缘系统失效的主要影响因素,然后对变频电机绝缘状态检测方法及延缓失效应对措施进行了全面综述,最后强调了变频电机绝缘目前面临的重大挑战及未来研究方向。The frequent disconnection of inverter power devices and load characteristics of motor can lead to high-frequency pulse overvoltage,which would lead to premature failure of generator insulation and bring challenges to the stability and reliability of system.From the failure mechanism of inverter motor insulation,the different stress failure forms of inverter motor insulation were investigated firstly,and the main factors affecting the failure of the insulation system were sorted out.Then the state detection methods of inverter motor insulation and the delay measures were comprehensively reviewed.Finally,the major challenges and future research direction currently faced by inverter motor insulation were emphasized.

关 键 词：变频电机 逆变器 高频脉冲过电压 绝缘失效 

分 类 号：TM304[电气工程—电机]