A Reconfigurable Totem-Pole PFC Rectifier With Light Load Optimization Control Strategy and Soft-Switching Capability

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This article presents a reconfigurable totem-pole bridgeless power factor correction converter employing an auxiliary circuit and a simple control scheme to achieve high efficiency. Under light load condition, instead of delivering the energy through the main switch, the proposed converter utilizes only the auxiliary switches by using a different control scheme. Since the auxiliary switches have much smaller parasitic capacitances than the main switches, the proposed converter can obtain high efficiency under light load condition. Over middle-to-heavy load condition, the proposed converter can acquire both zero-voltage switching operation and relieved reverse-recovery problem thanks to the auxiliary circuit, which leads to high efficiency even with Si-MOSFET in the continuous conduction mode control. As a result, the proposed converter can achieve high efficiency over the entire load condition. The effectiveness of the proposed converter is verified by a prototype with ac 230V(rms) input and 750 W output.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2021-04
Language
English
Article Type
Article
Citation

IEEE TRANSACTIONS ON POWER ELECTRONICS, v.36, no.4, pp.4371 - 4382

ISSN
0885-8993
DOI
10.1109/TPEL.2020.3019085
URI
http://hdl.handle.net/10203/279909
Appears in Collection
EE-Journal Papers(저널논문)
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