A Novel Bridgeless Single-Stage Half-Bridge AC/DC Converter

被引：12

作者：

Choi, Woo-Young ^{[1
]}

Yu, Wen-Song ^{[1
]}

Lai, Jih-Sheng ^{[1
]}

机构：

[1] Virginia Polytech Inst & State Univ, Future Energy Elect Ctr, Blacksburg, VA 24061 USA

来源：

2010 TWENTY-FIFTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC) | 2010年

关键词：

POWER-FACTOR CORRECTION; REVERSE-RECOVERY PROBLEMS; BOOST RECTIFIER;

D O I：

10.1109/APEC.2010.5433695

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper proposes a new bridgeless single-stage half-bridge ac-dc converter. The proposed converter integrates the operation of the bridgeless power factor correction (PFC) boost rectifier and the asymmetrical pulse-width modulation (APWM) half-bridge dc-dc converter. The proposed converter provides high power factor and direct power conversion from the line voltage to an isolated dc output voltage without using the full-bridge diode rectifier. Conduction losses are lowered with a simple circuit structure. Switching losses are also reduced by achieving zero-voltage switching (ZVS) of the power switches. The effectiveness of the proposed converter is verified on a 250 W (48 V/5.2 A) experimental prototype.

引用

页码：42 / 46

页数：5

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