Design and Optimization of Transmission Efficiency and Power Transfer Distance in a Wireless Power Transfer System: A Systematic Review

Abstract

Wireless power transmission (WPT) is an emerging technology which is gaining a lot of attention in the field of electronics engineering, and it holds much promise in the area of commercialization. In 1898, for the first time, a model for transferring power wirelessly was designed and built by Nikola Tesla, and since then the idea of transferring electricity without the use of wires has been taught of as a possibility. The aim of this paper is to carry out a systematic review on the optimization of the power transmission Efficiency of the wireless power transfer system as well as the power transfer distance between its transmitter and receiver. To this effect, various literatures include journal articles, conference proceedings, etc. which cover the various aspects that determine the performances of the various performance metrics were reviewed. The performance metrics of concern as well as their relationship were found to be Power transfer efficiency (PTE), Coil size or geometry, and transfer distance. The inductive resonant coupling approach is applied to gain higher efficiency and flexibility than other approaches, by coupling both receiver and transmitter coils resonantly. From the various literature, observations were made based on comparisons and conclusions around various approaches including the coil design, the use of repeater resonators, the use of meta-materials, the selection of an optimum frequency of operation, as well as the rectifier design. Based on these investigations and observations from literature, recommendations are made which suggest a superior combination of the various findings...