Asymmetrical voltage cancellation controlled multiload resonant inverter for induction cooking system

Induction heating (IH) holds a pivotal role in heating technology due to its numerous advantages such as simple, contactless, fast operation, environmentally friendly, and cost-effective nature. Domestic induction cooking (IC) is one of the most popular applications of IH. It is due to its safety, quick heating, cleanliness, and controllability. This paper presents a full-bridge resonant inverter with diode and series switch per load for multiload IC system using asymmetrical voltage cancellation (AVC) control with constant switching frequency. The advantages of this inverter circuit with AVC control include independent power control, high efficiency, wider output power range, soft-switching, and suitable for high-frequency loads. It can be seamlessly scaled to accommodate ‘n’ loads by integrating a diode and series switch combination for every new load. This configuration has been simulated using orcad personal simulation program with integrated circuit emphasis and validated through an experimental setup, generating 1108 W with a peak efficiency of 95.9%. The simulation and experimental results confirm that this inverter configuration is a viable approach for multiload IC applications.