Bidirectional Wireless Power Transfer for Electric Vehicles with Integrated Constant Current and Constant Voltage Charging Capabilities

Electric Vehicles (EVs) are the rapidly growing alternative to combustion vehicles, offering wide opportunity for research scope. However, electric vehicles face several challenges such as inadequate charging infrastructure, service availability and high battery cost. To address such challenges, the establishment of EV charging stations following the necessary standards is required and researchers need to address the challenges associated with it. Among the common methods of charging wireless method is more advantageous than the plug-in type of charging, which eliminates manual plugin chords and facilitates more safe and convenient charging. When a charging station is unavailable nearby, but another EV is ready to share the battery power, Vehicle-to-Vehicle power transfer becomes a viable solution. In the proposed method, the charging pad is placed at the front side of the EV and acts as a transmitter pad and receiver pad based on the request. The EV has an active rectifier with a boost topology, which controls the charging pad. This coupler mechanism couples with the wireless charging station or as well as another vehicle providing seamless charging architecture. The operating modes of the bi-directional converter are described, and the Constant Current/ Constant Voltage (CC/CV) charging is achieved with the load prediction-based control. Simulation analysis is carried out for a 3.3kW system and the results are represented for the proposed method.