A single-stage power-factor-correction converter with simple linkvoltage suppressing circuit (LVSC)
Jun-Young Lee
Myung-Joong Youn
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Taejon;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Jun 2001
Volume: 48,
Issue: 3
On page(s): 572-584
ISSN: 0278-0046
References Cited: 10
CODEN: ITIED6
INSPEC Accession Number: 6951731
Digital Object Identifier: 10.1109/41.925584
Current Version Published: 2002-08-07
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%
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