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Cited 11 time in webofscience Cited 13 time in scopus
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A Reconfigurable Totem-Pole PFC Rectifier With Light Load Optimization Control Strategy and Soft-Switching Capability

Authors
Lee, Young-DalMoon, Gun-WooBaek, JaeilKim, Chong-Eun
Issue Date
Apr-2021
Publisher
Institute of Electrical and Electronics Engineers
Keywords
Switches; Inductors; Servers; Switching loss; Rectifiers; Power systems; Zero current switching; Light load efficiency; server power supply; soft-switching operation; totem-pole bridgeless power factor correction (PFC) rectifier; zero current switching (ZCS); zero voltage switching (ZVS)
Citation
IEEE Transactions on Power Electronics, v.36, no.4, pp 4371 - 4382
Pages
12
Indexed
SCIE
SCOPUS
Journal Title
IEEE Transactions on Power Electronics
Volume
36
Number
4
Start Page
4371
End Page
4382
URI
https://scholarworks.gnu.ac.kr/handle/sw.gnu/3942
DOI
10.1109/TPEL.2020.3019085
ISSN
0885-8993
1941-0107
Abstract
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.
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