Dynamic wireless power transfer system for electric vehicles to simplify ground facilities - Sensorless vehicle detection and power control strategy -

In order to simplify ground facilities of a dynamic wireless power transfer system for electric vehicles, this paper proposes a control strategy for detecting the approximation of vehicles to the road-side transmitter without using additional sensors and for switching the operation modes of the road-side and vehicle-side systems without using communication between both sides. Compared to the conventional strategy, the proposed method can permit the vehicle-side control not only to maximize the transmitting efficiency but also to achieve power control.