Design of the L-LC Resonant Inverter for Induction Heating Based on Its Equivalent SRI

This paper presents the new L- LC induction heating generator and probes that, in resonance, are equivalent to a series resonant inverter. This equivalence is then used to compare both topologies, extracting the advantages and disadvantages of the L-LC usage. In addition, based on this equivalence, a design procedure is proposed that covers all possible L-LC configurations. Finally, some experimental results are presented, showing waveforms during normal and short-circuit operation.