TY - GEN
T1 - New "real" bridgeless high efficiency AC-DC converter
AU - Fardoun, Abbas A.
AU - Ismail, Esam H.
AU - Al-Saffar, Mustafa A.
AU - Sabzali, Ahmad J.
PY - 2012
Y1 - 2012
N2 - In this paper, a new bridgeless single-phase ac-dc converter with a natural power factor correction (PFC) is proposed. Compared with existing single-phase bridgeless topologies, the proposed topology has the merits of less component counts. Other advantages include: simple structure, soft switching, common ground, electrical isolation, and simple control circuitry. The absence of an input diode bridge and the presence of only one diode in the current path during each stage of the switching cycle result in higher power density and less conduction losses; hence, improved thermal management compared to existing PFC rectifiers is obtained. The proposed topology is designed to work in resonant mode to achieve an automatic PFC close to unity in a simple and effective manner. Principle of operation and the feasibility of the proposed converter are provided. The measured efficiency of the proposed converter at low line (85-V rms) line voltage is near 95%. Detailed experimental and simulation results are presented.
AB - In this paper, a new bridgeless single-phase ac-dc converter with a natural power factor correction (PFC) is proposed. Compared with existing single-phase bridgeless topologies, the proposed topology has the merits of less component counts. Other advantages include: simple structure, soft switching, common ground, electrical isolation, and simple control circuitry. The absence of an input diode bridge and the presence of only one diode in the current path during each stage of the switching cycle result in higher power density and less conduction losses; hence, improved thermal management compared to existing PFC rectifiers is obtained. The proposed topology is designed to work in resonant mode to achieve an automatic PFC close to unity in a simple and effective manner. Principle of operation and the feasibility of the proposed converter are provided. The measured efficiency of the proposed converter at low line (85-V rms) line voltage is near 95%. Detailed experimental and simulation results are presented.
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U2 - 10.1109/APEC.2012.6165837
DO - 10.1109/APEC.2012.6165837
M3 - Conference contribution
AN - SCOPUS:84860114630
SN - 9781457712159
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 317
EP - 323
BT - APEC 2012 - 27th Annual IEEE Applied Power Electronics Conference and Exposition
T2 - 27th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2012
Y2 - 5 February 2012 through 9 February 2012
ER -