Single-Phase PFC Converter using Switched-Capacitor for High Voltage DC Applications

This paper presents a single-stage non isolated switched capacitor ac-dc converter for power factor correction (PFC). This converter features reduced passive components, single switch, transformer less high voltage gain, and improves the power factor, reduces THD and voltage stress across the switch. The peak current mode with dynamic resonant perturbation (DRP) scheme compensates the sub harmonics that exist at zero crossing of the Source current is implemented for PFC In this paper the principle of operation, large signal modeling of the circuit and control method for the proposed PFC converter are provided.