摘要
鉴于IGBT模块中的续流二极管在关断过程中会发生瞬变,文章从二极管的设计准则出发,研究续流二极管发生失效的机理,并结合一个IGBT模块中二极管失效的具体案例进行分析,给出了二极管失效的几种原因,并提出了避免其失效的几种方法。
In IGBT modules, freewheeling diodes experience instant change in its turn-off process. Based on the design rules of diodes, failure mechanism of freewheeling diodes was analyzed combined with a concrete failed case, and several failure mechanisms were proposed. Several solutions were introduced to avoid the failures.
出处
《大功率变流技术》
2014年第5期28-32,共5页
HIGH POWER CONVERTER TECHNOLOGY
关键词
IGBT模块
续流二极管
反向恢复电流
热击穿
电压击穿
IGBT modules
freewheeling diode
fast-recovery current
thermal breakdown
voltage breakdown
