DESIGN AND IMPLEMENTATION OF PFC FULL BRIDGE PHASE SHIFT CONVERTER FOR EV BATTERY CHARGING

Abstract

The research work describes the design and implementation of a PFC full bridge phase shift converter for EV battery charging. It has a Power factor correction (PFC) unit at front end using boost converter followed by a phase-shift full-bridge (PSFB) converter. The PFC boost stage enables the charger to reach a nearly ideal power factor with an input current THD below 5%. The PSFB converter delivers power transfer to the load from the external power source to the battery. An optimized power conversion approach in the system decreases both voltage and current ripples and improves stability and reliability of the battery charging operation. A proto-type converter circuit is designed and experimentally tested to verify the performance of the converter. The PSFB converter technology enables high-quality power delivery and energy-efficient transfer and thus represents an effective solution for electric vehicle charging needs.