High-Performance Class-E Quasi-Resonant Inverter for Domestic Induction Heating Applications

Induction heating has become a relevant player in household decarbonization through electrification of heating processes. Its application to cooking process, provides high performance and high efficiency appliances, with a superior user performance. This technology requires high-performance and cost-effective inverters that takes the most of the power device and converter topology. Nowadays, most of appliances uses the well-known series resonant half-bridge topology, whereas single-switch topologies are used only in low-cost low-performance applications. This paper proposes a high-performance class-e quasi-resonant inverter for modern induction heating appliances. Unlike state-of-the-art proposals, this converters achieves full output power operating range up to 3.6 kW. Consequently, it provides a high-performance cost-effective alternative to current implementations. The proposed converter is analyzed in this paper and experimentally verified using a 3.6-kW 2-load induction heating implementation.