TY - GEN
T1 - Bridgeless PFC SEPIC rectifier with extended gain for universal input voltage applications
AU - Al Gabri, Ahmed M.
AU - Fardoun, Abbas A.
AU - Ismail, Esam H.
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/2/24
Y1 - 2014/2/24
N2 - In this paper, a new single phase ac-dc PFC bridgeless rectifier with multiplier stage to improve the efficiency at low input voltage and reduce the switch-voltage stress, is introduced. The absence of an input rectifier bridge in the proposed rectifier and the presence of only two semiconductor switches in the current flowing path during each switching cycle result in less conduction losses and improved thermal management compared to the conventional full bridge topology. Lower switch voltage stress allows utilizing a Mosfet with lower RDs-on. The proposed topology is designed to operate in discontinuous conduction mode (DCM) to achieve almost a unity power factor and low total harmonic distortion (THD) of the input current. The DCM operation gives additional advantages such as: zero-current turn-on in the power switches and simple control circuitry. The proposed topology is compared with modified full-bridge SEPIC rectifier in terms of efficiency, total harmonic distortion (THD), and power factor. Detailed converter analysis, small signal model and closed loop analysis are presented. Experimental results for a 200 W/400 Vdc at universal line voltage range to evaluate the performance of the proposed bridgeless PFC rectifiers are detailed.
AB - In this paper, a new single phase ac-dc PFC bridgeless rectifier with multiplier stage to improve the efficiency at low input voltage and reduce the switch-voltage stress, is introduced. The absence of an input rectifier bridge in the proposed rectifier and the presence of only two semiconductor switches in the current flowing path during each switching cycle result in less conduction losses and improved thermal management compared to the conventional full bridge topology. Lower switch voltage stress allows utilizing a Mosfet with lower RDs-on. The proposed topology is designed to operate in discontinuous conduction mode (DCM) to achieve almost a unity power factor and low total harmonic distortion (THD) of the input current. The DCM operation gives additional advantages such as: zero-current turn-on in the power switches and simple control circuitry. The proposed topology is compared with modified full-bridge SEPIC rectifier in terms of efficiency, total harmonic distortion (THD), and power factor. Detailed converter analysis, small signal model and closed loop analysis are presented. Experimental results for a 200 W/400 Vdc at universal line voltage range to evaluate the performance of the proposed bridgeless PFC rectifiers are detailed.
KW - AC-DC power converter
KW - Bridgeless rectifier
KW - Discontinuous current mode (DCM)
KW - Power conversion harmonics
KW - Power factor correction
KW - SEPIC rectifier
KW - Total harmonics distortion (THD)
UR - http://www.scopus.com/inward/record.url?scp=84949929208&partnerID=8YFLogxK
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U2 - 10.1109/IECON.2014.7048666
DO - 10.1109/IECON.2014.7048666
M3 - Conference contribution
AN - SCOPUS:84949929208
T3 - IECON Proceedings (Industrial Electronics Conference)
SP - 1277
EP - 1284
BT - IECON Proceedings (Industrial Electronics Conference)
PB - Institute of Electrical and Electronics Engineers Inc.
ER -