电子器件2025，Vol.48Issue(2)：298-304,7.DOI:10.3969/j.issn.1005-9490.2025.02.010
基于IGBT桥臂短路失效机制的极限容错型逆变器
Ultimate Fault Tolerant Inverter Based on Short Circuit Failure Mechanism of IGBT Bridge Arm
摘要
Abstract
The ultimate operating characteristics of power devices are deeply explored,a novel high reliability cold redundancy power electronic inverter topology based on the change of failure characteristic parameters is proposed.The characteristics of internal evolution structure reorganization of IGBT bridge arm under rated current pulse stress after short circuit failure are revealed.Based on this theory,the dynamic short-circuit failure impedance characteristic of epoxy resin encapsulated IGBT is determined,which is stable and not more than 20%drift after transient short-circuit failure,even after 624 hours of continuous thermal cycling aging test.Finally,through the ver-ification of the new cold redundancy inverter test platform,the ultimate fault-tolerant high reliability power converter structure with"seamless"switching before and after short circuit fault and full power stable output for a long time is realized without reducing the reli-ability index,changing the control strategy and increasing the cost.关键词
短路失效/IGBT模块/失效特征参数/器件级容错/可靠性Key words
short-circuit failure/IGBT module/failure characteristic parameters/device fault tolerance/reliability分类
电子信息工程引用本文复制引用
秦俊非..基于IGBT桥臂短路失效机制的极限容错型逆变器[J].电子器件,2025,48(2):298-304,7.基金项目
国家自然科学基金项目(U2004166) （U2004166）
河南省科技攻关项目(212102210023,222102220072) （212102210023,222102220072）
