Circuit-Model-Based Analysis of a Wireless Energy-Transfer System via Coupled Magnetic Resonances

被引：315

作者：

Cheon, Sanghoon ^{[1
]}

Kim, Yong-Hae ^{[1
]}

Kang, Seung-Youl ^{[1
]}

Lee, Myung Lae ^{[1
]}

Lee, Jong-Moo ^{[1
]}

Zyung, Taehyoung ^{[1
]}

机构：

[1] Elect & Telecommun Res Inst, Convergence Components & Mat Res Lab, Taejon 305700, South Korea

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2011年 / 58卷 / 07期

关键词：

Energy transfer; magnetic resonance; model; wireless; POWER-TRANSMISSION;

D O I：

10.1109/TIE.2010.2072893

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

A simple equivalent-circuit model is developed for a wireless energy-transfer system via coupled magnetic resonances, and a practical design method is also provided. Node equations for the resonance system are built with the method, expanding on the equations for a transformer, and the optimum distances of the coils in the system are derived analytically for optimum coupling coefficients for high transfer efficiency. In order to calculate the frequency characteristics for a lossy system, the equivalent model is established at an electric-design automation tool. The model parameters of the actual system are extracted, and the modeling results are compared with measurements. Through the developed model, it is seen that the system can transfer power over a mid-range of a few meters and that impedance matching is important to achieve high efficiency.

引用

页码：2906 / 2914

页数：9

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