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Open AccessFeature PaperArticle

High-Efficiency Isolated Photovoltaic Microinverter Using Wide-Band Gap Switches for Standalone and Grid-Tied Applications

1
Department of Electrical Engineering, National Ilan University, No. 1, Section 1, Shennong Road, Yilan 260, Taiwan
2
Department of Electronic Engineering, National Taiwan University of Science and Technology, No. 43, Section 4, Keelung Road, Da’an District, Taipei 106, Taiwan
3
School of Electrical and Computer Engineering, Ulsan National Institute of Science and Technology, 50 UNIST-gil Ulju-gun, Ulsan 44919, Korea
*
Author to whom correspondence should be addressed.
Energies 2018, 11(3), 569; https://doi.org/10.3390/en11030569
Received: 6 February 2018 / Revised: 28 February 2018 / Accepted: 28 February 2018 / Published: 6 March 2018
(This article belongs to the Special Issue Power Electronics in DC-Microgrid Systems)
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. View Full-Text
Keywords: photovoltaic; microinverter; grid-tied inverter; wide-band gap switches; high switching frequency; high power density; photovoltaic applications; power electronics; solar energy photovoltaic; microinverter; grid-tied inverter; wide-band gap switches; high switching frequency; high power density; photovoltaic applications; power electronics; solar energy
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MDPI and ACS Style

Liu, Y.-C.; Chen, M.-C.; Yang, C.-Y.; Kim, K.A.; Chiu, H.-J. High-Efficiency Isolated Photovoltaic Microinverter Using Wide-Band Gap Switches for Standalone and Grid-Tied Applications. Energies 2018, 11, 569. https://doi.org/10.3390/en11030569

AMA Style

Liu Y-C, Chen M-C, Yang C-Y, Kim KA, Chiu H-J. High-Efficiency Isolated Photovoltaic Microinverter Using Wide-Band Gap Switches for Standalone and Grid-Tied Applications. Energies. 2018; 11(3):569. https://doi.org/10.3390/en11030569

Chicago/Turabian Style

Liu, Yu-Chen; Chen, Ming-Cheng; Yang, Chun-Yu; Kim, Katherine A.; Chiu, Huang-Jen. 2018. "High-Efficiency Isolated Photovoltaic Microinverter Using Wide-Band Gap Switches for Standalone and Grid-Tied Applications" Energies 11, no. 3: 569. https://doi.org/10.3390/en11030569

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