A Small-scale Inductive Wireless Power Transmission Prototype for Charging Electric Vehicles

The continued commitment of the global community to alleviate the effects of climate change will result in widespread use of clean energy technologies including electric vehicles (EV). Safety and convenience are among the key features for successful and smooth transition to EV-based transportation. Therefore, wireless charging stations will become one of the emerging trends in the field of EV charging that has recently received considerable critical attention from researchers and practitioners to respond to the potential power and energy needs of EV fleets. Inductive wireless power transmission is widely adopted in wireless charging techniques in EV applications for its capability to efficiently transmit high power levels over long distances that can reach up to 40 cm. In this paper, a one-input one-output inductive wireless power transmission prototype is designed for EV charging and the efficiency under different charging distances is practically determined. The real voltage and current waveforms of the voltages and currents (in the transmitted and received sides) are presented to validate the robustness of the proposed prototype for battery charging under various airgap distances.