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High efficiency step-up DC-DC converter for low-DC renewable energy sources

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5 Author(s)
Woo-Young Choi ; Div. of Electron. Eng., Chonbuk Nat. Univ., Jeonju, South Korea ; Ju-Seung Yoo ; Jae-Yeon Choi ; Min-Kwon Yang
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This paper presents a high efficiency step-up DC-DC converter for low-DC renewable energy sources. The proposed DC-DC converter is controlled by asymmetrical pulse width modulation(APWM) technique and achieves Zero-current switching(ZCS) of all output diodes. Compared to the previous DC-DC converters, the voltage stresses of the semiconductor devices can be reduced in the proposed converter. Experimental results are obtained from a 200 W output power. The proposed DC-DC converter achieves a high efficiency of 97.5 % at the rated load.

Published in:

Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), 2012 International Symposium on

Date of Conference:

20-22 June 2012

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