Dual mode ZVS-PWM high frequency load resonant inverter with auxiliary edge resonant snubber for super heated steamer

In this paper, a dual mode phase-shift PWM full bridge-type series load resonant high frequency inverter is presented for induction heating applications. The bridge arm side passive capacitor snubber and/or AC load side active edge resonant snubber-assisted series load resonant soft switching inverter with a dual mode phase shift PWM scheme is evaluated and discussed on the basis of simulation and experimental results. It is proved from a practical point of view that this new inverter topology can expand soft switching area even under low power setting ranges.