Steady-State Characteristics of a Novel PFC Converter Operating in DCM

This paper proposes a novel PFC converter topology. The novel PFC converter is a buck-boost type and its output voltage is suppressed up to 200 V. As the result, the withstand voltage of any components can be reduced. That is possible to be higher efficiency and smaller size. Furthermore, the converter is easy to control when the converter operates in the discontinuous conduction mode (DCM). This paper presents the classification of some operation modes and the analysis by the state-space averaging method. The optimum circuit parameters for DCM operation are presented. Steady-state characteristics of the converter are shown analytically and experimentally. From the results, it is clarified that the proposed converter is usable at the worldwide line voltage and is adapted to the international regulation of line-current harmonics