Abstract
We are demanded to develop high efficiency power electronic circuit for the prevention of global warming and energy depletion. Power electronic circuit has some losses for example turn-on loss, turn-off loss, diode reverse recovery loss and conduction loss. Therefore we develop Recovery assist inverter (proposal circuit) . This circuit can decrease the diode recovery loss and the turn-on loss by connecting pulse Trans with power devices in parallel and driving pulse Trans during the debt time. And in the 800V20kW inverter, it was confirmed that efficiency had improved 2.2% by simulation.
