The Basic Cell Operating Regimes for Wireless Power Transfer of Electric Vehicles

A Moving Field Inductive Power Transfer (MFIPT) system for dynamic wireless inductive power supply of electric vehicles has been described in a companion paper [1]. In this work we concentrate on the two possible regimes at which wireless power transfer can be attained. One regime allows to maximize either the power on the load or the efficiency, at a given fixed frequency, by changing the load value. Another regime keeps a fixed value for the load and, for a relatively wide variations of the coupling coefficient, attains fixed efficiency and power transfer by selecting an appropriate working frequency. These two operating regimes are rigorously introduced, relative solutions are analytically expressed and illustrated via numerical simulations.