Real time calculation of the chip temperature of power modules in PWM inverters using a 16 bit microcontroller

Abstract

Investigations of the transient chip temperature of IGBT and diode in power modules are presented in this paper. The calculation of chip temperature and power losses occurs on-line in a microcontroller. Advanced practical results achieved in a step down converter are shown at different load cycles and output frequencies with the same average load current. An analysis of results and errors is also shown.