Title :
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
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;
Conference_Titel :
Wireless Power Transfer Conference (WPTC), 2014 IEEE
Conference_Location :
Jeju
DOI :
10.1109/WPT.2014.6839600
