A novel bridgeless single-stage half-bridge AC/DC converter

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 provid...

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Bibliographic Details
Main Authors: Woo-Young Choi, Wen-Song Yu, Jih-Sheng Lai
Format: Conference Proceeding
Language:English
Subjects:
AC-DC power converters
DC-DC power converters
Diodes
Power conversion
Power factor correction
Pulse modulation
Pulse width modulation converters
Reactive power
Rectifiers
Zero voltage switching
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Summary: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.
ISSN:1048-2334
2470-6647
DOI:10.1109/APEC.2010.5433695