TY - GEN
T1 - Isolated PFC Pre-Regulator for LED Lamps
AU - Qu, Xiaohui
AU - Wong, Siu Chung
AU - Tse, Chi K.
AU - Ruan, Xinbo
PY - 2008/11
Y1 - 2008/11
N2 - The efficiency and lifetime of light-emitting-diode (LED) lamps are approaching and exceeding that of fluorescent lamps. LED light sources are finding more applications than conventional light bulbs due to their compactness, lower heat dissipation, real-time color changing capability and most importantly, long life which is much longer life than that of conventional offline power converters. Conventional power converters normally use high voltage electrolytic capacitors as energy storage element which could have the shortest lifetime when compared to other components of the LED lighting system. In this paper, a new isolated PFC power pre-regulator is proposed. The pre-regulator allows the charge storage capacitor to be positioned on the secondary side of the isolation transformer. Longer lifetime low voltage and high capacitance value capacitors can therefore be used to extend the overall lifetime of the LED lighting system. Steady-state state-space averaging analysis is preformed for designing the converter. A prototype converter is built to verify performance of the proposed PFC LED preregulator. © 2008 IEEE.
AB - The efficiency and lifetime of light-emitting-diode (LED) lamps are approaching and exceeding that of fluorescent lamps. LED light sources are finding more applications than conventional light bulbs due to their compactness, lower heat dissipation, real-time color changing capability and most importantly, long life which is much longer life than that of conventional offline power converters. Conventional power converters normally use high voltage electrolytic capacitors as energy storage element which could have the shortest lifetime when compared to other components of the LED lighting system. In this paper, a new isolated PFC power pre-regulator is proposed. The pre-regulator allows the charge storage capacitor to be positioned on the secondary side of the isolation transformer. Longer lifetime low voltage and high capacitance value capacitors can therefore be used to extend the overall lifetime of the LED lighting system. Steady-state state-space averaging analysis is preformed for designing the converter. A prototype converter is built to verify performance of the proposed PFC LED preregulator. © 2008 IEEE.
KW - Light-emitting-diode lighting
KW - Offline LED driver
KW - Power-factor-correction current regulator
UR - https://www.scopus.com/pages/publications/63149172747
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-63149172747&origin=recordpage
U2 - 10.1109/IECON.2008.4758260
DO - 10.1109/IECON.2008.4758260
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 9781424417667
SN - 9781424417674
T3 - IECON Proceedings (Industrial Electronics Conference)
SP - 1980
EP - 1987
BT - Proceedings, IECON 2008 - 34th Annual Conference of the IEEE Industrial Electronics Society (IECON 2008)
PB - IEEE
T2 - 34th Annual Conference of the IEEE Industrial Electronics Society (IECON 2008)
Y2 - 10 November 2008 through 13 November 2008
ER -