High-Efficiency Isolated Photovoltaic Microinverter Using Wide-Band Gap Switches for Standalone and Grid-Tied Applications
- Citation data:
Energies, ISSN: 1996-1073, Vol: 11, Issue: 3, Page: 569
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- photovoltaic; microinverter; grid-tied inverter; wide-band gap switches; high switching frequency; high power density; photovoltaic applications; power electronics; solar energy
An isolated photovoltaic micro-inverter for standalone and grid-tied applications is designed and implemented to achieve high efficiency. System configuration and design considerations, including the proposed active-clamp forward-flyback resonant converter for the DC-DC stage and a dual-frequency full-bridge inverter for the DC-AC stage, are analyzed and discussed. A prototype microinverter system is built and tested. Experimental results verify the feasibility of the proposed system, which achieves 95% power conversion efficiency at full load.