Wireless Charging of Multiple EVs by using a Multi-Output Inverter

Wireless charging of Electric Vehicles is not an alien concept in the 21
^st
century. Resonant inductive power transfer (RIPT) is a popular method for wireless charging applications. This paper is proposed to solve the problem of charging multiple vehicles simultaneously, which can be used in static, quasi-static, and dynamic charging. Some approaches in the past reported where more than one single inverter was used. However, these methods are not economical and efficient. This paper reports a single resonant, full bridge inverter with multiple-output to charge multiple vehicles wirelessly. It allows the control of multiple outputs and can be used for charging vehicles independently and simultaneously up to their rated powers. It has the benefit that it saves component count compared with the two-converter solution and provides a higher utilization of semiconductors. To verify the result, Matlab simulation studies has been carried out for the two different ratings of series-series (SS) compensated wireless EV charger by using a realistic coil value, verified using the finite element method of Ansys Maxwell.