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

IF 1.1 4区物理与天体物理 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Magnetics Letters 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

IEEE Magnetics Letters PHYSICS, APPLIED-

CiteScore

2.40

自引率

0.00%

发文量

期刊介绍： IEEE Magnetics Letters is a peer-reviewed, archival journal covering the physics and engineering of magnetism, magnetic materials, applied magnetics, design and application of magnetic devices, bio-magnetics, magneto-electronics, and spin electronics. IEEE Magnetics Letters publishes short, scholarly articles of substantial current interest. IEEE Magnetics Letters is a hybrid Open Access (OA) journal. For a fee, authors have the option making their articles freely available to all, including non-subscribers. OA articles are identified as Open Access.