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Regular Paper | Open Access

High-efficiency Multiplexed Buck-type PFC Converter

Lunquan Li1,2, Qianhong Chen1( ), Jichao Huang3, Bin Liu3
School of Automation, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
Gaoyi Zhineng Electric Ltd., Shenzhen 518101, China
School of Information Engineering, Nanchang Hang Kong University, Nanchang 330063, China
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Abstract

This paper proposes a high-efficiency PFC rectifier based on multiplexing the switches. Compared with a traditional six-switch PFC rectifier, the proposed rectifier extends the switches’ active angle by making use of three bridge rectifiers. As a result, lower conduction resistance can be realized for switches. Consequently, system efficiency can be improved. Compared with a traditional six-switch PFC rectifier with doubled switches, the proposed rectifier can achieve almost the same efficiency improvement while no additional switches are needed. Since continuous inductor current is chopped and resulting current pulses cannot be injected into the grid directly, input filter design and resonance damping are discussed for the proposed rectifier. The controller design of the rectifier is analyzed. The inductor current reference is shaped considering the input voltage envelope and forward duties. Finally, the effectiveness of the proposed rectifier is verified through simulations and experiments.

Keywords

Buck-type rectifiercommutation statecontroller designefficiencymultiplex

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CSEE Journal of Power and Energy Systems
Volume 10 Issue 3,
May 2024
Pages 1053-1063
DOI: 10.17775/CSEEJPES.2021.08140
Cite this article:
Li L, Chen Q, Huang J, et al. High-efficiency Multiplexed Buck-type PFC Converter. CSEE Journal of Power and Energy Systems, 2024, 10(3): 1053-1063. https://doi.org/10.17775/CSEEJPES.2021.08140

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Received: 03 November 2021
Revised: 26 January 2022
Accepted: 04 March 2022
Published: 25 January 2023
© 2021 CSEE.

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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