Evaluation of on-state voltage VCE(ON) and threshold voltage Vth for real-time health monitoring of IGBT power modules
Evaluation of on-state voltage VCE(ON) and threshold voltage Vth for real-time health monitoring of IGBT power modules
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DOI：
10.1109/epe.2015.7309265
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发表时间：
2015-09
期刊：
影响因子：
--
通讯作者：
Mohd. Amir Eleffendi;C. M. Johnson
中科院分区：
文献类型：
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作者：
Mohd. Amir Eleffendi;C. M. Johnson
本文通过实验和仿真研究了利用通态电压\(V_{CE(ON)}\)和阈值电压\(V_{th}\)的实时测量对绝缘栅双极型晶体管（IGBT）功率模块进行实时健康监测。文中介绍了每个参数对温度、老化机制和工作条件的依赖性研究。开发了在线测量电路，以便在功率变换器正常运行期间获取这两个参数。利用作为热敏电参数的\(V_{th}\)实现了用于健康监测的结温估计。\(V_{CE(ON)}\)、\(V_{th}\)和\(T_J\)的数据在一个基于残差的健康监测框架中相结合，该框架能够区分功率模块的两种主要失效机制：键合线脱落和焊点疲劳。
This paper investigates by experiment and simulation the use of the real-time measurements of on-state voltage VCE(ON) and threshold voltage Vth for real-time health monitoring of IGBT power modules. A study of the dependencies of each parameter on temperature, wear-out mechanisms and operating conditions is presented. Online measurement circuits are developed to obtain these two parameters during the normal operation of power converters. Junction temperature estimation for health monitoring is implemented using Vth which is a thermo-sensitive electrical parameter. The data of VCE(ON), Vth and TJ are combined in a residual-based health monitoring framework which allows the discrimination between two dominant failure mechanisms of power modules: wire-bond lift-off and solder fatigue.