Wireless Electrodynamic Power Transfer: Modeling And Discussion Of a Dual-Mode Receiver

This paper investigates the dynamics of an electrodynamic receiver based on a rotating permanent magnet, incorporating a magnetic stiffness to enable operation in both oscillating and continuously rotating modes. The aim of this dual-mode system is to operate efficiently and robustly with both high- and low- excitation field amplitudes. The behaviour of the proposed receiver has been simulated using parameters identified from a prototype to determine the necessary conditions for operation in each of the two modes. Finally, we discussed various transition strategies that enable switching from the oscillating mode to the continuously rotating mode.