Abstract
This paper develops comparative analysis of resonant power converters for renewable energy application. These circuit topology of resonant converter with zero-voltage switching (ZVS) with an energy-blocking diode with zero-current switching (ZCS). Only active power switches are used for power energy conversion to reduce the cost of active power switches and control circuits. The active power switches are controlled by pulse width modulation at a fixed switching frequency and a constant duty cycle. In all cases the resonant converters are operated at discontinuous conduction mode, the inductor current through the resonant tank could achieve ZCS of the energy-blocking diodes. All active power switches can be operated with ZVS, and measured energy conversion efficiency. MATLAB/SIMULATION results demonstrated a satisfactory performance of resonant power converter, which is particularly, suited to the energy conversion applications in renewable energy generation systems.
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