Modal analysis of IGBT power devices based on ANSYS

This paper addresses the stability and reliability of IGBT operation under vibration conditions. Firstly, the structure of the module is built by soildworks; secondly, the ANSYS finite element analysis software is used as a platform to perform random vibration analysis on the structure; finally, a reasonable fatigue life calculation model is constructed based on the Conffin-Manson equation and the cumulative damage rule of Minter's, the fatigue life of the welded layer under random vibration load is calculated. Find out the difference in fatigue life of the weld layer between different structures and optimize the model. The result provides certain reference value and guiding significance for guiding the optimal design and reliability design of IGBT power module.