A Multi-Output Series Resonant Inverter with Asymmetrical Voltage-Cancellation Control for Induction-Heating Cooking Appliances

This paper presents and analyzes the asymmetrical voltage-cancellation (AVC) control, for a multi-output series resonant inverter. It is applied to the multiple-burner induction-heating cooking appliances. Some common approaches use several single-output inverters or a single-output inverter multiplexing the loads along the time periodically. By specifying a multi-output series-resonant high frequency inverter, a new inverter is obtained fulfilling the requirements. The synthesized converter can be considered as a multi-output extension of a full-bridge technology. It allows the control of those outputs, simultaneously and independently, up to their rated power, saving component count compared with the same-output, convert solution and providing a higher utilization of electronics. A three output inverter is presented and analyzed. All simulation results are provided with PSCAD/EMTDC software