A Low Cost Zero Current Switching AC-AC Resonant Converter for 3-Phase Induction Heating

Abstract

This paper proposes the concept of three phase ac to ac resonant converter for Induction heating. As compared with basicconverters, ac to ac resonant converter has advantages of less components count, low cost, high reliability and betterefficiency. A closed loop control structure is proposed in this paper for controlling three phase resonant converter.The switch operates in the softcommutation mode and serves as a high frequencygenerator. The output power is controlled via switchingfrequency. A steady state analysis of the converteroperation is presented. The experimental results arecompared with the simulation results.