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

Publication Year:
2018
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Citations 2
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Repository URL:
http://scholarworks.unist.ac.kr/handle/201301/23866
DOI:
10.3390/en11030569
Author(s):
Liu, Yu-Chen; Chen, Ming-Cheng; Yang, Chun-Yu; Kim, Katherine A.; Chiu, Huang-Jen
Publisher(s):
MDPI AG
Tags:
Energy; Mathematics; Engineering; photovoltaic; microinverter; grid-tied inverter; wide-band gap switches; high switching frequency; high power density; photovoltaic applications; power electronics; solar energy
article description
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.