Boost derived DC-to-AC converter with zero voltage switching

In this paper, we present a single-ended DC-to-AC converter with zero voltage switching and output isolation. It is a current fed converter having variable frequency control to get symmetrical regulated AC output. The transformer provides electrical output isolation. Two switches operating in complementary fashion control the operation of the converter and provide transformer core resetting. The resonance of the parasitic capacitances with the magnetizing inductance of the transformer and output side inductor causes zero voltage switching for both switches in order to reduce switching losses. The output has an LCC resonant tank circuit which controls the power flow and shape of the output AC voltage. Steady state equations are presented and basic circuit operation is explained. Simulation results verifying the theoretical waveforms are also presented.