Efficient Magnetic Resonance SIMO WPT Insensitive to Load Impedance at Short Distances

IF 2.9 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Microwave and Wireless Components Letters Pub Date : 2022-12-01 DOI:10.1109/LMWC.2022.3187609

B. Choi, Jeong‐Hae Lee

引用次数: 0

Abstract

In general, it is known that magnetic induction (MI) wireless power transfer (WPT) is used at a short distance (~several millimeters) and magnetic resonance (MR) WPT is applied at a longer distance (more than several tens of centimeters). In this letter, it is shown that the MR coil can be robustly designed to have higher efficiency, even when the load impedance changes significantly at short distances. The simulated power transfer efficiencies of MI and MR coil show that the MR coil was more insensitive to load impedance than the MI coil. A 1:4 single input and multiple output (SIMO) MR coil wasdesigned and fabricated. Its performance with the variation of load impedance was verified through measurement.

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高效磁共振SIMO WPT在短距离对负载阻抗不敏感

一般来说，已知磁感应(MI)无线电力传输(WPT)在短距离(~几毫米)和磁共振(MR)无线电力传输(WPT)应用在较长的距离(几十厘米以上)。在这封信中，它表明，即使负载阻抗在短距离上发生显着变化，磁流变线圈也可以被稳健地设计为具有更高的效率。仿真结果表明，磁流变线圈比磁流变线圈对负载阻抗更不敏感。设计并制作了1:4单输入多输出(SIMO)磁流变线圈。通过测量验证了其随负载阻抗变化的性能。

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 Microwave and Wireless Components Letters 工程技术-工程：电子与电气

自引率

13.30%

发文量

376

审稿时长

3.0 months

期刊介绍： The IEEE Microwave and Wireless Components Letters (MWCL) publishes four-page papers (3 pages of text + up to 1 page of references) that focus on microwave theory, techniques and applications as they relate to components, devices, circuits, biological effects, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, medical and industrial activities. Microwave theory and techniques relates to electromagnetic waves in the frequency range of a few MHz and a THz; other spectral regions and wave types are included within the scope of the MWCL whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design.