The Impact of Coupling and Loading Conditions on the Performance of S-S EV Dynamic Wireless Charging Systems

The concept of Dynamic Wireless Power Transfer (DWPT) enables electric vehicles (EVs) to charge while in motion. In order to efficiently perform wireless charging, the magnetic coupling between the transmitter and receiver coils should be maintained at all times even when the EV is moving. Therefore, in this paper, the study of system efficiency over different coupling conditions is conducted to observe the performance of the DWPT system at different operating frequencies. The impact of loading conditions on the efficiency of the DWPT system is also analyzed and discussed. The conducted analysis reveals that the higher the resonant frequency, the better is the system performance in terms of maintaining high power transfer efficiencies over a wide range of loading and coupling conditions.