Thermal behavior of a three phase inverter for EV (Electric Vehicle)

Power modules including IGBT are widely used in the applications of motor drivers in Electric Vehicle. The thermal behavior of these modules becomes more important to choose the optimum design of cooling system. In this paper, we propose a RC thermal model of the dynamic electro-thermal behavior of IGBT PWM (Pulse Width Modulation) inverter modules. This model is used to estimate the maximum junction temperature of the module. The thermal behaviors of the junction and power dissipation are studied with and without influences between the module components. The electro-thermal model is implemented and simulated with MATLAB simulator.