Title :
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
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;
Conference_Titel :
Power Electronics and ECCE Asia (ICPE-ECCE Asia), 2015 9th International Conference on
Conference_Location :
Seoul
DOI :
10.1109/ICPE.2015.7167940
