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PFC of SI-SEPIC Converter Cascaded with Flyback Converter for EV Application

This paper presents the control and modelling of an EV charger. The proposed EV charger consists of two-stage power conversion, the initial stage consists of SI-SEPIC converter, which inherently provides the power factor correction of the EV charger at the source, and the later consists of Fly back converter. Collective combination of these two converters for the EV charger results for the operation of converter at reduced duty ratio resulting which efficiency of the converter is increased. This work mainly focuses on designing the components of the converter and power factor correction using PWM and SPWM controller techniques in MATLAB environment.