压接式IGBT寿命评估软件开发与案例分析  

Lifetime Assessment Software Development and Case Study for Press-pack IGBTs

作　　者：肖凯 王振[1] 严喜林 刘叶春 胡剑生 刘平[2,4] XIAO Kai;WANG Zhen;YAN Xilin;LIU Yechun;HU Jiansheng;LIU Ping(Electric Power Research Institute,CSG EHV Power Transmission Company,Guangzhou 510000,China;College of Electrical and Information Engineering,Hunan University,Changsha 410082,China;Xuji Electric Co.,Ltd,Xuchang 461000,China;CPSS)

机构地区：[1]中国南方电网有限责任公司超高压输电公司电力科研院,广州510000 [2]湖南大学电气与信息工程学院,长沙410082 [3]许继电气股份有限公司,许昌461000 [4]中国电源学会

出　　处：《电源学报》2024年第3期227-235,共9页Journal of Power Supply

基　　金：南方电网公司科技资助项目(CGYKJXM20220108)。

摘　　要：压接式IGBT功率器件是新型电力系统应用装备中的核心部件之一。由于电力设备工作环境复杂,工况多变,长期作用下会导致功率器件发生疲劳失效。为保证电力系统关键设备的安全稳定运行,需要对压接式IGBT器件的剩余寿命进行评估,从而在器件发生失效前及时进行相应的处理。首先通过建立压接式IGBT器件多物理场模型分析影响器件老化进程的力学参数;然后,基于分析结果,在现有寿命预测模型中选取适合于压接式IGBT的模型,并开发适用于压接式IGBT的寿命评估软件;最后用寿命评估软件进行案例分析,得到器件的寿命评估结果,对器件的应用提供了指导。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 

分 类 号：TM464[电气工程—电器]