Fuzzy based Approach to Enhance the Wireless Charging System in Electric Vehicles

The infrastructure for electric vehicle (EV) charging is limited to the place and time. To facilitate the EV charging at parking lots and slow-moving traffic, the wireless charging system is proposed. An attempt has been made to transfer the power from a DC microgrid to the vehicle through the Wireless Power Transmission (WPT) system. The system involves single-stage inverter, inductive coupling, single-stage rectifier and boost converter to meet the rated voltage of the battery in EV. However, output voltage variations are predominant due to the change in battery impedance with the state of charge (SoC). Hence, a fuzzy logic controller is proposed to maintain the constant voltage across the load which is analysed in MATLAB/Simulink. The performance of the controller is evaluated with the Integral Square Error (IS E) and the dynamic response of the controller is evaluated by time-domain analysis.