4.8 Article

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

期刊

IEEE TRANSACTIONS ON POWER ELECTRONICS
卷 36, 期 4, 页码 4371-4382

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2020.3019085

关键词

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)

资金

  1. Ministry of Science and ICT, Government of South Korea, through the National Research Foundation of Korea (NRF) under Energy Cloud RD Program [2019M3F2A1072469]
  2. National Research Foundation of Korea [2019M3F2A1072469] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

向作者/读者索取更多资源

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. The converter utilizes auxiliary switches under light load condition for higher efficiency, while maintaining zero-voltage switching operation and relieving reverse-recovery problem under middle-to-heavy load condition with the help of the auxiliary circuit. The effectiveness of the converter is verified by a prototype with ac 230V(rms) input and 750W output.
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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