Abstract：The life of the device has a close relationship with the operating conditions of the train. The life prediction of the insulated gate bipolar transistor (IGBT) module in the existing converter, most of the considered working conditions are rated conditions or maximum load conditions. The operating conditions of high-speed train traction converters are completely different from those of industrial converters, and need to be considered in conjunction with the actual operation diagram. It is a key problem that how to extract the key data of actual train diagram and extract the characteristics of IGBT in converter from vehicle operation. Only by studying the life of IGBT under multiple operating conditions can it be more in line with the actual life. The traditional simulation system is to build traction, braking and other working conditions on the inverter side. This paper designs a simpler method to directly construct the changes in traction, braking and other operating conditions on the rectifier side, reflecting the changes in the train's multiple operating conditions to the current changes on the DC side of the rectifier, and then to the changes in the electrical characteristics of the IGBT. Finally, based on the task profile of Beijing Tianjin Intercity line, the simulation model is built to obtain the junction temperature change of IGBT under multiple operating conditions, and the life of IGBT is analyzed.
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2022, Vol. 37 
