hoseink08
Newbie level 4
Hello everyone
I have designed and implemented a one phase variable frequency inverter using SPWM.
The inverter works for a few minutes and then breaks down. It has happened several times and Mosfets got short circuit and I replaced them. I have attached the circuit. Could anyone give me help on this issue? is there anything wrong with my design?
Here is some detail:
1. SPWM is generated by Atmega 32 AVR
2. Output frequency of the inverter changes from 8 Hz to 55 Hz by a Potentiometer.
3. The delay between series Mosfet is 2us.
I have designed and implemented a one phase variable frequency inverter using SPWM.
The inverter works for a few minutes and then breaks down. It has happened several times and Mosfets got short circuit and I replaced them. I have attached the circuit. Could anyone give me help on this issue? is there anything wrong with my design?
Here is some detail:
1. SPWM is generated by Atmega 32 AVR
2. Output frequency of the inverter changes from 8 Hz to 55 Hz by a Potentiometer.
3. The delay between series Mosfet is 2us.