AUTOMATED FREQUENCY TRACKING SYSTEM FOR EFFICIENT MID-RANGE MAGNETIC RESONANCE WIRELESS POWER TRANSFER

摘要

An automated frequency tracking system is implemented for an efficient mid-range magnetic resonance wireless power transfer based on an analysis of a wireless power link consisting of transmitting and receiving resonators placed in a strong coupling region. The proposed tracking system is designed to maintain a power transfer efficiency of more than 70% for any transfer distance range by directly monitoring the efficiency via out-band communication. The advantage of the proposed system over other frequency tracking schemes is that the performance of the resonators and power amplifier can be applied to the tracking algorithm.