Title :
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
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;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2012 15th International Conference on
Conference_Location :
Sapporo
Print_ISBN :
978-1-4673-2327-7
