Experimental studies on full bridge resonant inverter fed induction heating system

This paper deals with an experimental verification of full bridge resonant inverter fed induction heating system. The switches operate in soft commutation mode and serves as a high frequency generator. The operating frequency is automatically adjusted to maintain a small constant lagging phase angle under load parameter variation. The output power is controlled using the asymmetrical voltage cancellation technique. The full bridge series-parallel resonant tank is designed without the use of output transformer. This results in an increase of the net efficiency of the induction heating system. This system has an advantage like reduced volume and switching losses. Steady state analysis of the inverter operation is presented. The circuit models are developed for simulation studies. The results of simulation and hardware are presented. Experimental results are compared with simulation results.