Dynamic Wireless Power Transfer for Electric Vehicle Charging Application

Abstract

The demand for wireless power transfer (WPT) system is highly growing since it is more convenient, reliable and
safer solution for electric vehicle (EV) consumers. Static and dynamic power transfer systems are the two-opted
appreciable wireless charging techniques for user friendly EVs. Dynamic wireless power transfer in vehicles is a
method of charging the battery of EVs while they are in motion. The system has transmitting module and receiver
module where the transmission module is placed in the road on which charging must be achieved and the receiver
module is fixed underneath the vehicle which is to be charged. The transmitter module comprises of various
transmitter coils which is arranged in an array on the road. The transmitter coils are fed with constant dc supply to
create a magnetic flux which is constant with respect to road. In this model, Inductive power transfer is to be
established by achieving change in flux though receiver coil as the car is moving and thus cutting various constant
magnetic fields. The transmitting coil can selectively turn ON/OFF for charging vehicles while driving. As the car
comes close to a transmitter coil, the array of IR sensor senses the car and send signal to micro-controller which
turns ON the relay present in the transmitter coil module.