A Power Factor Corrected Resonant EV Charger Using Reduced Sensor Based Bridgeless Boost PFC Converter

A reduced sensor based bridgeless boost (BLB) power factor correction (PFC) converter fed full-bridge inductor-inductor capacitor (FBLLC) converter for electric vehicle (EV) charging, is presented in this article. This converter is a twin stage converter, where the first stage is a PFC-BLB converter operating in continuous conduction mode of its boost inductors, and the second stage is an FBLLC converter, which converts the output voltage of the PFC-BLB converter to an isolated low voltage for constant current/constant voltage (CC/CV) charging of an EV battery. The BLB converter is switched at fixed frequency using pulsewidth modulated control, whereas FBLLC converter employs a pulse frequency modulation control to enable CC/CV charging of EV battery. An experimental prototype of EV charger is developed and the digital control of PFC-BLB and FBLLC converter, is implemented using a 32 bit TMS320F28035 digital signal processor to charge an EV battery with a maximum power of 2.7 kW and a current of 50 A.

Automated summary

This study presents a reduced sensor based bridgeless boost power factor correction converter for electric vehicle charging. The converter consists of two stages, PFC-BLB and FBLLC, to achieve CC/CV charging for EV battery.