Abstract
An automated frequency tracking system for an efficient mid-range wireless power transfer is realized based on an analysis of magnetic resonance wireless power link consisting of high-quality factor transmitting and receiving resonators. The proposed automatic adaptive frequency tracking system is designed to maintain a power transfer efficiency of higher than 70% for any transfer mid-range distance by directly monitoring the link efficiency using wireless communication. The advantage of the proposed system over other frequency tracking schemes is that the efficiencies of the wireless power link and power amplifier can be considered in the frequency tracking algorithm. The proposed system has been successfully demonstrated with an operation of normal digital LED TV.
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