TY - GEN
T1 - Buck converter associated with active clamp flyback converter for PV power system
AU - Tseng, S. Y.
AU - Li, Y. J.
AU - Wu, Y. J.
PY - 2008
Y1 - 2008
N2 - This paper presents an LED lighting system with a PV source. The circuit structure of the proposed system separately adopts buck converter and flyback converter as the charger and discharger. With this circuit structure, buck converter can vary its duty ratio to regulate charging current of battery, while flyback converter with active clamp circuit can recover energy stored in leakage inductor of transformer 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. As compared with the conventional converter with hard-switching circuit, the proposed one can improve conversion efficiency of 7% and achieve efficiency about 83% 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 10 V and output power of 20 W have been implemented to verify its feasibility.
AB - This paper presents an LED lighting system with a PV source. The circuit structure of the proposed system separately adopts buck converter and flyback converter as the charger and discharger. With this circuit structure, buck converter can vary its duty ratio to regulate charging current of battery, while flyback converter with active clamp circuit can recover energy stored in leakage inductor of transformer 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. As compared with the conventional converter with hard-switching circuit, the proposed one can improve conversion efficiency of 7% and achieve efficiency about 83% 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 10 V and output power of 20 W have been implemented to verify its feasibility.
KW - Active clamp circuit
KW - Buck converter
KW - Flyback converter
KW - LED lighting
KW - Synchronous switch technique
UR - http://www.scopus.com/inward/record.url?scp=62949201847&partnerID=8YFLogxK
U2 - 10.1109/ICSET.2008.4747138
DO - 10.1109/ICSET.2008.4747138
M3 - 会议稿件
AN - SCOPUS:62949201847
SN - 9781424418886
T3 - 2008 IEEE International Conference on Sustainable Energy Technologies, ICSET 2008
SP - 916
EP - 921
BT - 2008 IEEE International Conference on Sustainable Energy Technologies, ICSET 2008
T2 - 2008 IEEE International Conference on Sustainable Energy Technologies, ICSET 2008
Y2 - 24 November 2008 through 27 November 2008
ER -
