High frequency AC-LED driving for street light

Author

Byeoung-Geuk Kang ; Yongoh Choi ; Se-Kyo Chung

Author_Institution

Dept. of Control & Instrum. Eng., Gyeongsang Nat. Univ., Jinju, South Korea

fYear

2015

fDate

1-5 June 2015

Firstpage

1246

Lastpage

1251

Abstract

This paper deals with a high frequency AC-LED drive system for street light applications requiring relatively high power and power factor correction (PFC). The proposed power supply consists of two conversion stages including a PFC front-end and a LCC resonant inverter directly driving AC-LEDs. The current balancing of the multiple LED strings is an important issue in the high power LED drive circuit. The method using a balancing transformer is discussed and its integration to the LLC transformer is also considered. The simulation and experimental results for 100W prototype are provided to show the effectiveness of the proposed scheme. The measured efficiency of the overall circuit is 93% at 220V input voltage.

Keywords

light emitting diodes; power factor correction; street lighting; LCC resonant inverter; PFC front-end; balancing transformer; current balancing; efficiency 93 percent; high frequency AC-LED driving; high power LED drive circuit; power 100 W; power factor correction; power supply; street light; voltage 220 V; Integrated circuit modeling; Light emitting diodes; Lighting; RLC circuits; Resonant frequency; Resonant inverters; Windings;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and ECCE Asia (ICPE-ECCE Asia), 2015 9th International Conference on

Conference_Location

Seoul

Type

conf

DOI

10.1109/ICPE.2015.7167940

Filename

7167940