Self-tuning of impedance matching for wireless power transfer devices

Abstract

A new design of self-tuning impedance matching for wireless power transfer is investigated. The system efficiency was numerically calculated by varying the distance between the system transmitter/receiver with self-tuning and without it. This work introduces an analytic and numerical design of a device for wireless power transfer with self-tuning by capacitance, based on MPPT (Maximum Power Point Tracking) algorithm. The results show an increase of efficiency at 35.55% in 2 meters distance between transmitter and receiver devices when compared with a device without self-tuning.