Bridgeless SEPIC Rectifier With Unity Power Factor and Reduced Conduction Losses

In this paper, a new bridgeless single-phase AC-DC converter with an automatic power factor correction (PFC) is proposed. The proposed rectifier is based on the single-ended primary inductance converter (SEPIC) topology and it utilizes a bidirectional switch and two fast diodes. The absence of an in...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2009-04, Vol.56 (4), p.1147-1157
Main Author: Ismail, E.H.
Format: Article
Language:English
Subjects:
AC-DC converters
AC-DC power converters
Bridgeless rectifier
Conduction losses
Diodes
discontinuous current mode (DCM)
Electric potential
Inductance
Power factor
Power factor correction
power factor correction (PFC)
Reactive power
rectifier
Rectifiers
single-ended primary inductance converter (SEPIC)
Switches
Switching converters
Thermal management
Topology
total harmonic distortion (THD)
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Description
Summary:In this paper, a new bridgeless single-phase AC-DC converter with an automatic power factor correction (PFC) is proposed. The proposed rectifier is based on the single-ended primary inductance converter (SEPIC) topology and it utilizes a bidirectional switch and two fast diodes. The absence of an input diode bridge and the presence of only one diode in the flowing-current path during each switching cycle result in less conduction loss and improved thermal management compared to existing PFC rectifiers. Other advantages include simple control circuitry, reduced switch voltage stress, and low electromagnetic-interference noise. Performance comparison between the proposed and the conventional SEPIC PFC rectifier is performed. Simulation and experimental results are presented to demonstrate the feasibility of the proposed technique.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2008.2007552