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

fYear

2012

fDate

17-21 Sept. 2012

Firstpage

442

Lastpage

445

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;

fLanguage

English

Publisher

ieee

Conference_Titel

ESSCIRC (ESSCIRC), 2012 Proceedings of the

Conference_Location

Bordeaux

ISSN

1930-8833

Print_ISBN

978-1-4673-2212-6

Electronic_ISBN

1930-8833

Type

conf

DOI

10.1109/ESSCIRC.2012.6341350

Filename

6341350