Wireless power transfer guides

Author

Awai, Ikuo ; Sawahara, Yuichi ; Ishizaki, Takayuki

Author_Institution

Ryutech Corp., Otsu, Japan

fYear

2013

fDate

5-8 Nov. 2013

Firstpage

77

Lastpage

79

Abstract

It is experimentally studied that the power transfer efficiency is improved by inserting a proper structure made of dielectrics, magnetic materials or metals between two spiral coils constituting a coupled-resonator WPT (Wireless power transfer) system. The structures can be hollow/solid circular cylinder, plate or rectangular parallelepiped. The power transfer is based on the coupling of evanescent fields, not propagating fields. The principle of power guide is temporarily considered to be the refraction of the electric and magnetic fields at the boundary of 2 different materials. But it is still not clear.

Keywords

radiofrequency power transmission; resonators; coupled-resonator WPT; electric field refraction; evanescent fields coupling; magnetic field refraction; power transfer efficiency; wireless power transfer guides; Coils; Couplings; Ferrites; Magnetic fields; Optical resonators; Positron emission tomography; Repeaters; WPT; evanescent wave; guides; long distance power transfer; refraction of electric/magnetic fields; wireless power transfer;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings (APMC), 2013 Asia-Pacific

Conference_Location

Seoul

Type

conf

DOI

10.1109/APMC.2013.6695196

Filename

6695196