Press-pack IGBT power devices are one of the core components in new power system application equipment. Due to the complex working environment and variable working conditions of power equipment, the fatigue failure of power devices will be caused over time. To ensure the safe and stable operation of key equipment in power systems, it is necessary to assess the remaining lifetime of press-pack IGBT devices, thereby timely taking appropriate actions before a device failure occurs. First, a multi-physics field model of press-pack IGBT devices is established, and the mechanical parameters affecting their aging process are analyzed. Based on the analysis results, a suitable model for press-pack IGBTs is selected from the existing lifetime prediction models, and a lifetime assessment software applicable to press-pack IGBTs is developed. Finally, a case study is conducted based on the developed lifetime assessment software, and the assessment result of devices is obtained, providing guidance for the applications of devices.
关键词
压接式IGBT/多物理场模型/老化失效/特征参量/寿命预测
Key words
Press-pack IGBT/multi-physics field model/aging failure/characteristic covariate/lifetime prediction
维普
万方数据