Abstract

The use of electric vehicles expands slowly due to many problems; one of them is charging the car using cable, a method known as plug-in. A technological alternative that can replace cables is the system of energy transfer by electromagnetic induction; for the moment this energy transfer is low power compared to the cable system. The objective of this research project is to demonstrate that the induction charging system is totally feasible for a parked vehicle. It uses a source coil located on the floor of the parking lot, and a pickup coil located in the frame of the car. This paper experimentally demonstrates how the power of transfer varies when the distances between the two coils vary too; three alternatives are considered: coils with cores of air, coils with common iron core and coils with separated iron cores. The measurements are made in a prototype formed by two coils separated by a distance d and provided with a scale of measurement in millimeters. Finally, the behavior of the transferred energy is evaluated according to the distance between coils and the three magnetic core alternatives