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http://dx.doi.org/10.6113/TKPE.2016.21.3.224

Single-Power-Conversion Series-Resonant AC-DC Converter with High Efficiency  

Jeong, Seo-Gwang (Dept. of Electronic and Electrical Eng., Pohang Univ. of science and technology)
Cha, Woo-Jun (Dept. of Electronic and Electrical Eng., Pohang Univ. of science and technology)
Lee, Sung-Ho (Dept. of Electronic and Electrical Eng., Pohang Univ. of science and technology)
Kwon, Bong-Hwan (Dept. of Electronic and Electrical Eng., Pohang Univ. of science and technology)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.21, no.3, 2016 , pp. 224-230 More about this Journal
Abstract
In this study, a single-power-conversion series-resonant ac-dc converter with high efficiency and high power factor is proposed. The proposed ac-dc converter consists of single-ended primary-inductor converter with an active-clamp circuit and a voltage doubler with series-resonant circuit. The active-clamp circuit clamps the surge voltage and provides zero-voltage switching of the main switch. The series-resonant circuit consists of leakage inductance $L_{lk}$ of the transformer and resonant capacitors $ C_{r1}$ and $ C_{r2}$. This circuit also provides zero-current switching of output diodes $D_1$ and $D_2$. Thus, the switching loss of switches and reverse-recovery loss of output diodes are considerably reduced. The proposed ac-dc converter also achieves high power factor using the proposed control algorithm without the addition of a power factor correction circuit and a dc-link electrolytic capacitor. A detailed theoretical analysis and the experimental results for a 1kW prototype are discussed.
Keywords
Single-power-conversion; SEPIC(Single-Ended Primary-Inductor Converter); Voltage doubler; Active-clamp circuit; Series-resonant circuit;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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