Title :
A single-stage power-factor-correction converter with simple link voltage suppressing circuit (LVSC)
Author :
Lee, Jun-Young ; Youn, Myung-Joong
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea
fDate :
6/1/2001 12:00:00 AM
Abstract :
A single-stage power-factor-correction AC/DC converter with a simple link voltage suppressing circuit (LVSC) for the universal line application is proposed. A portion of the energy charged in a boost inductor is directly transferred to a load via LVSC without passing the link capacitor. Using simple circuitry, a low link voltage can be realized without input current deadbands at line zero crossings. The proposed converter is analyzed and design guidelines for the proper operation of a converter are given. A universal input (90-265-Vrms ) prototype converter with 5-V 12-A output is implemented to verify performance. The experimental results show that the maximum link voltage stress and efficiency are about 447 V and 81%, respectively. The power factor is above 0.96 under the universal line condition when the load is higher than 30%
Keywords :
AC-DC power convertors; power factor correction; 12 A; 447 V; 5 V; 81 percent; 90 to 265 V; AC/DC converter; boost inductor energy; efficiency; energy transfer; line zero crossings; link voltage suppressing circuit; low link voltage; maximum link voltage stress; power factor; single-stage power-factor-correction converter; universal line application; Circuits; DC-DC power converters; Inductors; Power harmonic filters; Power system harmonics; Reactive power; Stress; Switches; Topology; Voltage control;
Journal_Title :
Industrial Electronics, IEEE Transactions on
