Single-Phase Single-Switch Vienna Rectifier as Electric Vehicle PFC Battery Charger

This paper presents a single-phase single-switch bridgeless power factor corrector (PFC) boost Vienna rectifier as an onboard electric vehicle (EV) battery charger. The presented topology generates 3-level voltage waveform at the input which eliminates harmonic contents significantly while using small filters. The reduced number of parts used in this topology makes it appealing for EV industries to develop this PFC rectifier as a compact battery charger. Modelling of the single-phase Vienna rectifier is performed and a cascaded PI controller is designed to regulate the DC bus voltage at 400V to charge EV batteries as well as drawing low harmonic grid current and ensuring unity power factor operation of the converter. Simulations are done to validate the good dynamic performance of the single-switch rectifier and adopted controller in generating regulated and low ripple DC voltage from AC grid to supply EV batteries.