A digital leading phase current reduction (LPCR) technique for CCM boost PFC in light load conditions

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This paper proposes a leading phase current reduction (LPCR) technique in a continuous conduction mode (CCM) boost power factor correction (PFC) for light load power factor (PF) improvement. The proposed LPCR technique provides the corrected average inductor current reference and the modified duty ratio feed-forward (MDFF) technique which can cancel the effect of the phase lead currents resulting from the EMI filter and input capacitor. Moreover, the proposed LPCR also provides the optimal dead-zone from the corrected current reference and MDFF. Therefore, the proposed LPCR can improve the power quality and efficiency not only in high AC line voltage range but also in extreme light load conditions. The principle and analysis of the proposed LPCR are presented, and the performance and feasibility are verified by experimental results from 230Vrms input and 750W–400V output laboratory prototype.
Publisher
IEEE
Issue Date
2015-06-03
Language
English
Citation

Power Electronics and ECCE Asia (ICPE-ECCE Asia), 2015 9th International Conference on, pp.1041 - 1046

DOI
10.1109/ICPE.2015.7167909
URI
http://hdl.handle.net/10203/200506
Appears in Collection
EE-Conference Papers(학술회의논문)

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