Title :
Inductorless and electrolytic capacitorless pseudo-sine current controller in LED lighting system with 1.1W/2.2W power reduction
Author :
Su, Yi-Ping ; Chiu, Shao-Wei ; Kuo, Chun-Chieh ; Lee, Yu-Huei ; Chen, Ke-Horng ; Lin, Ying-Hsi ; Huang, Chen-Chih ; Lee, Chao-Cheng ; Chen, Yu-Wen
Author_Institution :
Inst. of Electr. Control Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
LED lighting system with the proposed pseudo-sine-current (PSC) controller removes most of the external passive components, which include inductor, electrolytic capacitor (E-cap), freewheel diode, blocking diode, and the bleeding circuit for Triac dimming control, for low cost and small volume. Besides, 1.1W and 2.2W power loss are reduced in Triac dimming control to get high efficiency of 85% at 110Vrms and 87% at 220Vrms, respectively. Furthermore, High PF of 0.98 at 110Vrms and 0.96 at 220Vrms, and low THD of 18% at 110Vrms and 19% at 220Vrms are also achieved owing to in-phase line voltage and current.
Keywords :
electric current control; harmonic distortion; light emitting diodes; lighting control; E-cap; LED lighting system; PSC controller; THD; bleeding circuit; blocking diode; electrolytic capacitorless pseudo-sine current controller; external passive components; freewheel diode; high PF; inductorless pseudo-sine current controller; power 1.1 W; power 2.2 W; power loss; power reduction; total harmonic distortion; triac dimming control; voltage 110 V; voltage 220 V; Control systems; Hemorrhaging; Inductors; Light emitting diodes; Lighting; Thyristors; Voltage control; LED lighting system; Triac dimming; electrolytic capacitor (E-cap); pseudo-sine-current (PSC) controller;
Conference_Titel :
ESSCIRC (ESSCIRC), 2012 Proceedings of the
Conference_Location :
Bordeaux
Print_ISBN :
978-1-4673-2212-6
Electronic_ISBN :
1930-8833
DOI :
10.1109/ESSCIRC.2012.6341350
