Frequency Splitting Analysis of Two-Coil Resonant Wireless Power Transfer

被引：91

作者：

Zhang, Yiming ^{[1
]}

Zhao, Zhengming ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Elect Engn, State Key Lab Power Syst, Beijing 100084, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2014年 / 13卷

关键词：

Frequency splitting; magnetic resonance; scattering parameter; two coils; wireless power transfer (WPT); ENERGY-TRANSFER SYSTEMS; BIOMEDICAL IMPLANTS; TELEMETRY SYSTEM; AIR-GAP; DESIGN;

D O I：

10.1109/LAWP.2014.2307924

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Frequency splitting has been widely observed in resonant wireless power transfer (RWPT). However, there are some misunderstandings concerning this phenomenon in the two-coil RWPT structure. Based on the circuit theory, this letter deduces the expressions of the voltage ratio, the output power, and the efficiency varying with the driving frequency, supplied by a constant ac voltage source. Frequency splitting occurs in the voltage gain and the output power, and the splitting frequency points are deduced. As to the efficiency, no frequency splitting exists, contrary to the current mainstream research. The calculations and the experiments confirm these conclusions.

引用

页码：400 / 402

页数：3

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