Optimal load analysis for a two-receiver wireless power transfer system

Author

Tong Zhang ; Minfan Fu ; Chengbin Ma ; Xinen Zhu

Author_Institution

Joint Inst., Shanghai Jiao Tong Univ., Shanghai, China

fYear

2014

fDate

8-9 May 2014

Firstpage

84

Lastpage

87

Abstract

Wireless power transfer to multiple devices is of great importance to simultaneous charging mobile devices, where coupling system is crucial component determining system efficiency. In a multiple-receiver system, external loads values would affect the coupling efficiency, especially for low quality factor coupling system. In this paper, a two-receiver model is proposed to analysis the optimal external loads that would maximize the coupling efficiency. Optimal loads formulas for a two-receiver system are derived using circuit model and validated using a 13.56MHz printed circuit board coupling system.

Keywords

Q-factor; inductive power transmission; mobile handsets; printed circuits; PCB coupling system; circuit model; coupling efficiency; external loads; frequency 13.56 MHz; low quality factor coupling system; mobile devices; multiple-receiver system; optimal load analysis; printed circuit board coupling system; two-receiver model; two-receiver wireless power transfer system; Coils; Couplings; Impedance; Integrated circuit modeling; Receivers; Transmitters; Wireless communication; load tracking; multiple receivers; optimal load; wireless power transfer system;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Power Transfer Conference (WPTC), 2014 IEEE

Conference_Location

Jeju

Type

conf

DOI

10.1109/WPT.2014.6839600

Filename

6839600