Predicting a transistor temperature in an inverter power module of a vehicle, and related operating methods

摘要

A power module system for a vehicle includes a circuit board, a power transistor mounted on the circuit board, and a temperature sensor mounted on the circuit board at a sensing location remote from the power transistor. The temperature sensor is configured to measure a real time temperature at the sensing location. The system also includes a processor coupled to the temperature sensor for generating a predicted real-time silicon temperature for the power transistor from the measured real-time temperature at the sensing location. The predicted real-time silicon temperature is generated using a selected calibration curve corresponding to a current operating state of the vehicle.