Contactless energy transmission to mobile loads by CLPS-test driving of an EV with starter batteries

Abstract

Starting and driving methods of contactless power transmission to electric vehicles are proposed. By employing rectangular and spiral coils for primary and secondary windings, respectively, for a contactless power station (CLPS), over 200 W of electric power was transmitted to the authors' fabricated EV motor setup and verified its actual operation on it. The EV is a compact prototype driven by CLPS, loaded with a lightweight battery. The battery supplies a part of transient current arising from starting and acceleration of EV. The CLPS-powered prototype could actually be driven at 30 km/h for an overall energy consumption of 100 W. Driving tests with and without CLPS using a "10-mode" driving schedule were executed and compared.