Isolated flyback half-bridge OCC micro-inverter

This paper introduces a cost-effective isolated micro-inverter for photovoltaic applications. The proposed topology is comprised of a cascaded dual-output flyback DC-DC converter and an OCC controlled half-bridge inverter. The advantages of the proposed micro-inverter include low active switch count, galvanic isolation, and excellent DC-AC power decoupling. The paper presents theoretical analysis, simulation and experimental results obtained from a 150W prototype. The experimental prototype demonstrated excellent quality of AC output waveform at acceptable conversion efficiency.