A Boost PFC fed LLC Resonant Converter For Electric Vehicle Application

This paper describes a half-bridge LLC resonant converter followed by a power factor corrected (PFC) boost converter in an electric car battery. The suggested charger employs a boost converter as the front-end dc-dc converter, which operates in continuous conduction mode (CCM) of the input inductor to provide harmonic-free AC mains current. As the second stage, a Half-Bridge LLC resonant converter is used to accelerate battery charging. An active power factor controller (APFC) manages the DC-link voltage while also maintaining sinusoidal input current. Pulse frequency modulation (PFM) is used after the PI-controller to adjust the battery's output. On the MATLAB/Simulink platform, the proposed charger's steady-state and dynamic performance are evaluated for a range of supply voltage and load conditions.