DESIGN AND IMPLEMENTATION OF ECONOMICAL SINGLE SWITCH RESONANT POWER DEVICE FOR ENERGY RESOURCES

Abstract

his project develops a novel single-switch resonant power converter for renewable energy generation applications. This circuit topology integrates a novel single- switch resonant inverter with zero-voltage switching (ZVS) with an energy-blocking diode with zero-current switching (ZCS). The energy-blocking diode with a direct-current output filter filters the output stage of the novel single-switch resonant inverter. Only one active power switch is used for power energy conversion to reduce the cost of active power switches and control circuits. The active power switch is controlled by pulse width modulation at a fixed switching frequency and a constant duty cycle. When the resonant converter is operated at discontinuous conduction mode, the inductor current through the resonant tank could achieve ZCS of the energy-blocking diode. Accordingly, high energy conversion efficiency is ensured.