Research of temperature rise on IGBT module and DC busbar for a single-phase PWM rectifier

In the application of power converters constructed by IGBTs, the temperature rise of IGBTs is often considered to ensure safe operation of the system. The thermal distribution of a single-phase Pulse Width Modulation (PWM) rectifier is studied here. Based on accurate power dissipation of IGBTs and DC busbar, a thermal circuit model and a Finite Element Method (FEM) model are given to solve the temperature rise on the IGBTs and DC busbar. The computational results and simulation results are in agreement with the measured value tested on the 25kW single-phase PWM rectifier, which demonstrates the effectiveness of these approaches.