Research Status and Applications of Dual-Frequency Induction Heating Power Supply

The advent of dual-frequency induction heating (DFIH) technology has revolutionized modern industrial applications by providing flexible regulation of the heating process, significantly boosting heating efficiency, and optimizing energy utilization. This comprehensive review delves into the state-of-the-art research on DFIH power supplies, with a particular emphasis on their topological structures, output power control mechanisms, and resonant network configurations. The paper critically examines the challenges inherent to this technology, such as enhancing power density and ensuring system stability. It also highlights recent innovations in multi-inverter bridge topologies, resonant circuit optimization, and the implementation of intelligent control algorithms. Case studies are employed to illustrate the practical applications of DFIH in metal processing and composite material treatment, showcasing its potential to revolutionize these industries. The review concludes by delineating future research directions, with a focus on the integration of multi-frequency technologies and the development of efficient control strategies, thereby setting the stage for the next generation of induction heating systems.