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Highly efficient step-up dc–dc converter for photovoltaic micro-inverter SCIE SCOPUS

Title
Highly efficient step-up dc–dc converter for photovoltaic micro-inverter
Authors
Cha, WJKwon, JMKwon, BH
Date Issued
2016-10
Publisher
International Solar Energy Society
Abstract
This paper presents a highly efficient step-up dc-dc converter for photovoltaic system. This converter is composed of an active resonant-clamp circuit and a resonant voltage doubler. The active resonant-clamp circuit limits the voltage stress and provides soft switching of the power switches. Also small value of a clamp capacitor employed to increase efficiency can reduce the conduction loss. Moreover, the resonant voltage doubler is used in the secondary side of the transformer to remove the reverse-recovery problem and clamp voltage stress of output diodes. Thus, the power losses of the proposed converter were minimized by the reducing switching power losses and conducting power loss. A 370 W prototype has been implemented to verify its performance. Experimental results prove the superiority of the proposed highly efficient step-up dc-dc converter for photovoltaic micro-inverter. (C) 2016 Elsevier Ltd. All rights reserved.
URI
https://oasis.postech.ac.kr/handle/2014.oak/37443
DOI
10.1016/J.SOLENER.2016.05.024
ISSN
0038-092X
Article Type
Article
Citation
SOLAR ENERGY, vol. 135, page. 14 - 21, 2016-10
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권봉환KWON, BONG HWAN
Dept of Electrical Enginrg
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