This paper presents a multiple and multi-zone output induction heating system. It consists of a half bridge inverter followed by a bridge rectifier and a ring filter. The analysis of high-frequency leakage inductance at a particular frequency for air core solenoid has been performed neglecting all the mutual effect. Proposed circuit is designed in PSIM environment and simulated. A comparative study of the simulation results reveal that the RMS value of output current of the proposed circuit is changed when the working coils are magnetically coupled with the load impedances.

Keywords: Multi-zone high frequency induction heating, Leakage inductance, Solenoid coil, PSIM