Mid-range adiabatic wireless energy transfer via a mediator coil

TL;DR

This paper introduces a robust mid-range wireless energy transfer method using a mediator coil and adiabatic frequency sweeps, enabling efficient energy flow with minimized losses.

Contribution

It presents a novel adiabatic frequency sweep technique for efficient wireless energy transfer via a mediator coil, improving robustness and reducing mediator losses.

Findings

Efficient energy transfer achieved via sequential resonance tuning.

Direct transfer reduces mediator losses under specific resonance conditions.

Method is robust to noise and external interferences.

Abstract

A technique for efficient mid-range wireless energy transfer between two coils via a mediator coil is proposed. By varying the coil frequencies three resonances are created: emitter-mediator (EM), mediator-receiver (MR) and emitter-receiver (ER). If the frequency sweeps are adiabatic and such that the ER resonance precedes the MR resonance, the energy flows sequentially along the chain emitter-mediator-receiver. If the MR resonance precedes the ER resonance, then the energy flows directly from the emitter to the receiver via the ER resonance; then the losses from the mediator are suppressed. This technique is robust to noise, resonant constraints and external interferences.