DESIGN AND SIMULATION OF CLASS-D FULL BRIDGE RESONANT INVERTER FED INDUCTION HEATING SYSTEM

This paper proposes the use of the full bridge inverter in class-D operating modes to achieve higher efficiency in a high output power levels. Induction heating system technology is nowadays widely implemented in domestic appliances because of its cleanness, high efficiency, and quick heating process. Because of these advantages are due to its heating process, where the induction pot is directly heated by the induced currents generated with a varying magnetic field. IH systems are based on resonant inverters to generate the required alternating Current (20 kHz) to feed the inductor. Usually, resonant converters are helpful to achieve higher efficiencies and power densities. In such systems, the higher output power and efficiency are accomplished at the resonant frequency, and the switching frequency is greater to decrease the output power. Index Terms— Induction heating (IH), full bridge inverter, and resonant power conversion.