High-efficiency LED driver for street light applications

Author

Gwan-Chi Jane ; Chun-Chieh Su ; Huang-Jen Chiu ; Yu-Kang Lo

Author_Institution

Dept. of Electron. & Comput. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan

fYear

2012

fDate

11-14 Nov. 2012

Firstpage

1

Lastpage

5

Abstract

In this paper, a novel single-stage parallel topology power circuit is presented. It can be used in LED street lights for widely power range, from 80 W to 300 W. This topology contains two control methods. One is the constant-voltage feedback, and the other is the constant-current feedback. With this design, this power circuit can provide LED a stable constant current. Besides good stability in linear dimming, it solves the power limit issue (up to 150 W) of the conventional discontinuous conduction mode single-stage Flyback converter. The efficiency, power factor, and cost of the new topology are better than the conventional two-stage topology. The experimental results for a 210 W LED street light demonstrate the excellent circuit performance.

Keywords

electric current control; feedback; light emitting diodes; network topology; power convertors; power factor; street lighting; voltage control; LED street light; constant-current feedback; constant-voltage feedback; conventional discontinuous conduction mode; high-efficiency LED driver; linear dimming; power factor; power limit issue; single-stage flyback converter; single-stage parallel topology power circuit; street light application; Current measurement; Electricity; Light emitting diodes; Reactive power; Stress; Topology; Voltage control; LED driver; linear dimming; single-stage Flyback converter; single-stage parallel topology;

fLanguage

English

Publisher

ieee

Conference_Titel

Renewable Energy Research and Applications (ICRERA), 2012 International Conference on

Conference_Location

Nagasaki

Print_ISBN

978-1-4673-2328-4

Electronic_ISBN

978-1-4673-2329-1

Type

conf

DOI

10.1109/ICRERA.2012.6477255

Filename

6477255