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Power factor correction circuit with a new modified SEPIC converter

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4 Author(s)
Pop, O. ; Dept. of Appl. Electron., Tech. Univ. Cluj-Napoca, Romania ; Chindris, G. ; Grama, A. ; Hurgoi, F.

This paper presents a new topology for a SEPIC converter used in power factor correction circuits. The conventional SEPIC converter was primarily designed to provide a nonpulsating input current, operating with both inductors in continuous current mode and only DC-DC conversion was considered. The modified SEPIC converter is designed to operate as an AC-DC converter and can be viewed as a cascade of a modified boost converter and a buck-boost converter. The boost converter operates in discontinuous current mode, while the buck-boost converter operates in continuous current mode. Since a high power factor is naturally achieved in this way, a simple feedback control technique is needed in order to regulate the output voltage. The paper also presents a calculus method for the power factor and total harmonic distortion factor for the proposed converter

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Electronics Technology: Concurrent Engineering in Electronic Packaging, 2001. 24th International Spring Seminar on

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