Achieving High Input PF for CRM Buck-Buck/Boost PFC Converter

Abdul Hakeem Memon; Mazhar Hussain Baloach; Anwar Ali Sahito; Amir Mahmood Soomro; Zubair Ahmed Memon

doi:10.1109/ACCESS.2018.2879804

IEEE Access (Jan 2018)

Achieving High Input PF for CRM Buck-Buck/Boost PFC Converter

Abdul Hakeem Memon,
Mazhar Hussain Baloach,
Anwar Ali Sahito,
Amir Mahmood Soomro,
Zubair Ahmed Memon

Affiliations

Abdul Hakeem Memon: ORCiD; Department of Electrical Engineering, Mehran University of Engineering and Technology, Jamshoro, Pakistan
Mazhar Hussain Baloach: Department of Electrical Engineering, Mehran University of Engineering and Technology, Khairpur, Pakistan
Anwar Ali Sahito: Department of Electrical Engineering, Mehran University of Engineering and Technology, Jamshoro, Pakistan
Amir Mahmood Soomro: Department of Electrical Engineering, Mehran University of Engineering and Technology, Jamshoro, Pakistan
Zubair Ahmed Memon: Department of Electrical Engineering, Mehran University of Engineering and Technology, Jamshoro, Pakistan

DOI: https://doi.org/10.1109/ACCESS.2018.2879804
Journal volume & issue: Vol. 6
pp. 79082 – 79093

Abstract

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When the on-time is constant during a line cycle, the input power factor (PF) of critical conduction mode buck-buck/boost power factor correction converter is low. A variable on-time control (VOTC) scheme is put forward in this paper to realize high PF. By utilizing the input and output voltage to modulate the on-time of buck and buck/boost switch, we can realize high-input PF with low-total harmonic distortion within the universal input voltage range. The operating principles and the comparative analysis of the converter with conventional constant on-time control (COTC) and VOTC are analyzed. The proposed control scheme achieves high PF and efficiency as compared with the COTC. A 100-W prototype was built up to verify the effectiveness of the proposed control strategy.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

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