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Single-Power-Conversion Series-Resonant AC-DC Converter with High Efficiency
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 Title & Authors
Single-Power-Conversion Series-Resonant AC-DC Converter with High Efficiency
Jeong, Seo-Gwang; Cha, Woo-Jun; Lee, Sung-Ho; Kwon, Bong-Hwan;
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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 of the transformer and resonant capacitors and . This circuit also provides zero-current switching of output diodes and . 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.
Single-power-conversion;SEPIC(Single-Ended Primary-Inductor Converter);Voltage doubler;Active-clamp circuit;Series-resonant circuit;
 Cited by
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