A Simple Approach for Dynamic Junction Temperature Estimation of IGBTs on PWM Operating Conditions

摘要: Power modules including IGBTs (Insulated Gate Bipolar Transistor) are widely used in motor drivers. For the design optimization of IGBT fitted with driving conditions, junction temperature and cooling conditions has become a major issue increase current density demand for downsized modules. Especially, estimation "worst-case" caused by locked condition is necessary prior to module design. In this paper, we propose simple approach dynamic behavior PWM (Pulse Width Modulation) inverter The electrothermal calculations performed using familiar spreadsheet software. approach, mathematical models dependencies device losses quasi-one- dimensional difference equations thermal conduction were estimate module. To narrow down many parameters initial stage modules, proposed will be an effective tool.