Variable Position Wireless Power Transmitter through Multiple Cooperative Flux Generators

J. Schwannecke, Member,IEEE, A. E. Umenei, Member,IEEE, T. Leppien, D. Baarman

Abstract

Wireless power transfer systems have become more commercially viable and applicable in the recent decade. Research interests have been focused on solving the inherent challenges that implementation of this technology engenders, which include elimination of electromagnetic field energy broadcast combined with spatial freedom of power transfer to receiver systems. The solutions to these two challenges require confining EM flux only to receiver systems and having an arbitrary large area for power transfer.

This work presents a novel power transmitter system which tackles these two challenges by producing a simplistic moveable electromagnetic energy field over an arbitrarily large area by switching transmission coil configurations. The transmitter system is
validated against the wireless power QiTM standard limits for adequate power transfer efficiency. This new transmitter accomplishes spatial freedom and EM field confinement to charging systems while maintaining simplicity in construction and control.