A SEPIC PFC fed LLC Resonant converter For EV Battery Charger Applications

The majority of two-stage converters for charging electric vehicle batteries include a boost converter for power factor correction (PFC) preceded by a dc-dc converter with unified input voltage. These two-stage conversions have limited capability and a function estimation count. Therefore, in this paper, a PFC-SEPIC fed LLC resonant converter for an on-board private charging unit is proposed. The PFC-SEPIC converter at the input stage is intended to function in continuous conduction mode (CCM) and enhances power quality execution on alternating current mains for a vast span of output voltages. The design for V
s
= 85V and TDD less than 3.895% for varied input voltages and battery voltages at different loads, is affirmed using MATLAB/SIMULINK.