Low conduction losses half-bridge inverter with soft switching auxiliary circuit for induction- cooking applications

This paper presents a zero-voltage switching (ZVS) pulse width modulation (PWM) half-bridge inverter with active soft switching auxiliary circuit. The steady state operation condition of the inverter is analyzed and characteristic curves are presented in order to provide a detailed design which leads to both reduction of conduction losses and providing available ZVS margins of all switches. The experimental results from a laboratory prototype are given to verify both the design procedures and feasibility of the proposed structure.