Design of dual output LLC resonant converter for a high-power LED lamp

Author

Han-sol Chang ; Byung-Hun Lee ; Hyung-Nam Park ; Jae-Du La ; Young-Seok Kim

Author_Institution

Dept. of Electr. Eng., Inha Univ., Incheon, South Korea

fYear

2012

fDate

21-24 Oct. 2012

Firstpage

1

Lastpage

4

Abstract

A dual-output LLC resonant converter for a high power LED lamp is proposed in this paper. One of dual output nodes is for the LED lighting and a closed-loop control strategy is applied. The other is used for charging a battery using one auxiliary switch and pulse width modulation IC. The proposed converter circuit is used a half-bridge-type LLC resonant converter and designed for obtaining soft-switching on two power switches to reduce their switching loss. A prototype power supply is developed to supply 350 W high-power LEDs with a 220 V utility-line input voltage. Simulation results by PSIM will be showed the practicality and validity of the proposed circuit.

Keywords

LED lamps; closed loop systems; lighting; power semiconductor switches; resonant invertors; secondary cells; switching convertors; LED lighting; PSIM; closed-loop control strategy; converter circuit; dual output LLC resonant converter; high-power LED lamp; modulation IC; power 350 W; power switches; utility-line input voltage; voltage 220 V; Batteries; Light emitting diodes; Lighting; Resonant frequency; Switches; Switching frequency; Voltage control; Closed-loop control; Dual output; LED; LLC resonant converter; VCO; ZVS;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2012 15th International Conference on

Conference_Location

Sapporo

Print_ISBN

978-1-4673-2327-7

Type

conf

Filename

6401897