Title :
Study on high efficiency WPT underseas
Author :
Futagami, D. ; Sawahara, Y. ; Ishizaki, T. ; Awai, I.
Author_Institution :
Ryukoku Univ., Otsu, Japan
Abstract :
Aiming at the undersea WPT (Wireless Power Transfer) system, improvement of power transfer efficiency through saltwater is studied. We have examined the unloaded Q (Qu) and coupling coefficient (k) of the spiral coil resonators for different diameters and different operating frequencies with the number of turns fixed. In addition, introducing a new structure of 4-layered spiral coil resonators, we found the improved transfer efficiency, especially by adopting dense winding of litz wire.
Keywords :
coils; inductive power transmission; resonators; windings; WPT underseas; litz wire winding; power transfer efficiency; saltwater; spiral coil resonators; wireless power transfer system; Coils; Couplings; Resonant frequency; Wireless communication; Wires; Coupling Coefficient; Litz Wire; Multi-layered Spiral Coil Resonator; Number of Strands; Resonator Diameter; Undersea WPT; Unloaded Q;
Conference_Titel :
Wireless Power Transfer Conference (WPTC), 2015 IEEE
Conference_Location :
Boulder, CO
DOI :
10.1109/WPT.2015.7140149