DocumentCode :
1562544
Title :
Buck-Boost Combined with Active Clamp Flyback Converter for PV Power System
Author :
Tseng, S.-Y. ; Kuo, J.-S. ; Wang, S.-W. ; Hsieh, C.-T.
Author_Institution :
Chang-Gung Univ., taoyuan
fYear :
2007
Firstpage :
138
Lastpage :
144
Abstract :
This paper presents an LED lighting system with PV sources. The circuit of the proposed system adopts buck-boost converter associated with flyback converter to charge battery and to drive an LED lighting system. In this research, buck-boost converter is used as a charger for charging battery, and flyback converter with active clamp circuit is adopted to drive the 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 count, 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 83% under full load at driving the LED lighting. Experimental results obtained from a prototype with output voltage of 10 V and output power of 20 W have verified its feasibility.
Keywords :
light emitting diodes; lighting; photovoltaic power systems; power convertors; switching convertors; LED lighting system; PV power system; active clamp flyback converter; buck-boost converter; hard-switching circuit; light emitting diodes; photovoltaic sources; power 20 W; synchronous switch technique; voltage 10 V; Batteries; Clamps; LED lamps; Light emitting diodes; Power systems; Prototypes; Switches; Switching circuits; Switching converters; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics Specialists Conference, 2007. PESC 2007. IEEE
Conference_Location :
Orlando, FL
ISSN :
0275-9306
Print_ISBN :
978-1-4244-0654-8
Electronic_ISBN :
0275-9306
Type :
conf
DOI :
10.1109/PESC.2007.4341977
Filename :
4341977
Link To Document :
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