Title :
High efficiency step-up DC-DC converter for low-DC renewable energy sources
Author :
Choi, Woo-Young ; Yoo, Ju-Seung ; Choi, Jae-Yeon ; Yang, Min-Kwon ; Cho, Hyoung-Sup
Author_Institution :
Div. of Electron. Eng., Chonbuk Nat. Univ., Jeonju, South Korea
Abstract :
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.
Keywords :
DC-DC power convertors; PWM power convertors; zero current switching; APWM technique; ZCS; asymmetrical pulse width modulation technique; high-efficiency step-up DC-DC converter; low-DC renewable energy sources; power 200 W; semiconductor devices; voltage stress; zero-current switching; Capacitors; Clamps; Inductors; Magnetic resonance; Power generation; Stress; Switches; DC-DC converter; high voltage gain; soft-switching; zero-current switching(ZCS);
Conference_Titel :
Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), 2012 International Symposium on
Conference_Location :
Sorrento
Print_ISBN :
978-1-4673-1299-8
DOI :
10.1109/SPEEDAM.2012.6264544
