High Efficiency AC-AC Boost Resonant Converter for Domestic Induction Heating
Induction heating (IH) technology is nowadays widely present in domestic appliances because of its cleanness, high efficiency, and faster heating process. All of these advantages are due to its heating process, where the pot is directly heated by the induced currents generated with a varying magnetic field. Domestic induction heating technology requires specific features such as high output power levels in a reduced enclosure, large load variation, and reduced cost with high efficiency. The efficiency of the converter determines the efficiency of the application, requiring therefore high efficiency power converters. Domestic induction appliances require power converters that feature high efficiency and accurate power control in a wide range of operating conditions. Because of the high power density and the reduced cooling capabilities, efficiency becomes critical in this application. To fulfill these requirements, classical solutions are based on the combination of a rectifier and a dc-link inverter. In order to achieve this aim, an acÃ¢â‚¬â€œac boost resonant converter is proposed in this paper. The main features of this proposal are the improved efficiency, reduced component count, and proper output power control. a converter design procedure is also analyzed.