A Reconfigurable Totem-Pole PFC Rectifier With Light Load Optimization Control Strategy and Soft-Switching Capability
- Authors
- Lee, Young-Dal; Moon, Gun-Woo; Baek, Jaeil; Kim, 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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