Performance of H.F. mirror inverter with different semiconductor switches for induction heating

An exhaustive method for verifying & optimizing the performance of high frequency mirror inverter for induction heater is presented here. Heating coil of the induction heater is made of litz wire which controls the skin effect and proximity effect of conductor operating at high frequency. With the calculated optimum values of inductance and resistance at a particular operating frequency, HF mirror inverter topology has been simulated using P-SIM. Obtained results are then compared using different power semi-conductor switches like IGBT, GTO and MOSFET. Afterwards waveforms have been shown to justify the feasibility for real implementation of high frequency mirror inverter fed induction heater in industrial appliances.