A Novel Single Stage Bridgeless Zero Current Switched High Step-Down Buck-Boost eV Charger with Power Factor Correction Capability

This paper proposes a novel single stage, single phase bridgeless buck-boost derived power factor corrected (PFC) eV buck level 1 Charger achieving zero current switching. The distinctive characteristic of this configuration is high step-down buck capability as low as 48V from 230 V AC supply with sinusoidal input current. The presence of transfer capacitance in the circuit configuration aids to maintaining continuous, ripple free input current with near unity power factor. This proposed high step-down single stage EV charger attains the efficiency of around 97-98%. The simulation results obtained on MATLAB platform with operating modes and detailed analysis is presented which is duly validated through design and result.