TY - GEN
T1 - PV power system using buck/forward hybrid converters for LED lighting
AU - Fan, S. Y.
AU - Tseng, S. Y.
AU - Wu, Y. J.
AU - Lee, J. D.
PY - 2009
Y1 - 2009
N2 - This paper presents an LED lighting system with a PV source. The circuit structure of the proposed system adopts buck converter combined with forward converter. In this research, buck converter is used as a charger for charging battery, and forward converter with active clamp circuit, which can recover leakage inductor energy and reset magnetizing energy stored in the transformer, is adopted to drive LED lighting. To simplify the circuit structure, switches of two converters are integrated with a synchronous switch technique. With this approach, the proposed system has several merits, which are a less component counts, lighter weight, smaller size and higher conversion efficiency. Compared with the conventional converter with hard-switching circuit, the proposed one can improve conversion efficiency of 5% and achieve efficiency about 82% under full load when the proposed system is operated in the driving LED condition. Experimental results obtained from a prototype with the output voltage of 10V and output power of 20W have been implemented to verify verified its feasibility. Keywords: LED lighting system, buck converter, forward converter, active clamp circuit, synchronous switch technique.
AB - This paper presents an LED lighting system with a PV source. The circuit structure of the proposed system adopts buck converter combined with forward converter. In this research, buck converter is used as a charger for charging battery, and forward converter with active clamp circuit, which can recover leakage inductor energy and reset magnetizing energy stored in the transformer, is adopted to drive LED lighting. To simplify the circuit structure, switches of two converters are integrated with a synchronous switch technique. With this approach, the proposed system has several merits, which are a less component counts, lighter weight, smaller size and higher conversion efficiency. Compared with the conventional converter with hard-switching circuit, the proposed one can improve conversion efficiency of 5% and achieve efficiency about 82% under full load when the proposed system is operated in the driving LED condition. Experimental results obtained from a prototype with the output voltage of 10V and output power of 20W have been implemented to verify verified its feasibility. Keywords: LED lighting system, buck converter, forward converter, active clamp circuit, synchronous switch technique.
UR - http://www.scopus.com/inward/record.url?scp=72449168320&partnerID=8YFLogxK
U2 - 10.1109/ECCE.2009.5316194
DO - 10.1109/ECCE.2009.5316194
M3 - 会议稿件
AN - SCOPUS:72449168320
SN - 9781424428939
T3 - 2009 IEEE Energy Conversion Congress and Exposition, ECCE 2009
SP - 2584
EP - 2591
BT - 2009 IEEE Energy Conversion Congress and Exposition, ECCE 2009
T2 - 2009 IEEE Energy Conversion Congress and Exposition, ECCE 2009
Y2 - 20 September 2009 through 24 September 2009
ER -