EXPERIMENTAL RESULTS FOR THE ZERO-VOLTAGE-SWITCHING ISOLATED DC-TO-ACINVERTER

In this paper, a simplified design procedure and experimental results for a DC-to-AC inverter with zero-voltage-switching (ZVS) and output e lectrical isolation are given. The isolation of the output stage is im portant in many applications and this topology can be implemented for power factor correction. Two switches operate in complementary fashion to control the operation of the converter and provide transformer cor e resetting. The resonance between the parasitic capacitances, transfo rmer magnetizing inductance, and output side output power and sets the frequency of the output AC voltage. Using simplified steady state ana lysis, input and output characteristic curves are derived for differen t transformer ratios. Based on these curves, a design procedure with a specific example supported by simulation results will be presented. P reliminary experimental results of the prototype will also be presente d.