Junior Member level 3
I am using the following circuit of inverter. I have some problems coming:
1) I get a 15V peak and 30V p-p sine wave (by further employing a RC filter) circuit when I apply a DC Bus Voltage of +30V. Shouldn't I be getting a peak voltage of +30V. Please Do guide me !!
2) My IGBTs get very hot even at a DC Bus Voltage of +30V. I am using a PWM frequency of 15khz. My IGBTs also draw very large current from the DC Bus. I put a load of 5k ohms but still current from the DC Bus is 0.7A.
I also included a Dead time of 10us to ease the heating problem but its still getting a lot of heat up and problem is there.
My IGBTs= IRG4BC20KD
Thanking in Advance!!!!