IGBT Temperature Control Based on Self-calibration PID

In order to solve the problem of IGBT temperature overshoot in power cycle test, a self-calibration PID algorithm was designed. PID controller was simulated by MATLAB. IGBT Junction temperature was tested by electrical testing theory and combined with embedded system. The self-calibration PID algorithm was applied to control IGBT junction temperature in thermal fatigue test. Experimental results show that both the self-calibration PID control and temperature can achieve better result. Thus system dynamic performance was improved much. It provided a better experimental environment for the IGBT life prediction.