Magnetic Field Leakage Cancellation in Multiple-Input Multiple-Output Wireless Power Transfer Systems

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2022-02-14 DOI:10.1109/LMAG.2022.3151065

Daisuke Kobuchi;Kentaro Matsuura;Yoshiaki Narusue;Hiroyuki Morikawa

引用次数: 1

Abstract

This letter presents a method to cancel magnetic field leakage while maintaining high power transfer efficiency (PTE) in multiple-input multiple-output wireless power transfer systems. To achieve low leakage and high PTE, the problem of PTE maximization under the cancellation condition of the magnetic field leakage is solved, which is a maximization problem of affinely constrained Rayleigh quotients. Subsequently, the optimal amplitudes and phases of the input voltages at the transmitter array and the optimal load impedances at the receivers are shown. This method can further reduce the magnetic field leakage by up to 31 dB compared with the PTE maximization method, while having a PTE drop within 5.5%.

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多输入多输出无线电力传输系统中的磁场泄漏消除

这封信提出了一种在多输入多输出无线电力传输系统中消除磁场泄漏同时保持高电力传输效率（PTE）的方法。为了实现低泄漏和高PTE，解决了在磁场泄漏消除条件下PTE最大化的问题，这是仿射约束瑞利商的最大化问题。随后，示出了发射器阵列处的输入电压的最佳幅度和相位以及接收器处的最佳负载阻抗。与PTE最大化方法相比，该方法可以进一步减少高达31dB的磁场泄漏，同时PTE下降在5.5%以内。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.

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