Experimental Study of Effectiveness of Metasurface for Efficiency and Misalignment Enhancement of Near-Field WPT System
Experimental Study of Effectiveness of Metasurface for Efficiency and Misalignment Enhancement of Near-Field WPT System
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DOI：
10.1109/lawp.2022.3188297
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发表时间：
2022-10
影响因子：
4.2
通讯作者：
M. Aboualalaa;I. Mansour;R. Pokharel
中科院分区：
文献类型：
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作者：
M. Aboualalaa;I. Mansour;R. Pokharel
对于远场无线电力传输（WPT）系统来说，设计一个超表面对于近场WPT系统来说是至关重要的。首先，设计了一种采用开环螺旋谐振腔和超表面的鲁棒近场WPT系统，然后研究了超表面在改善功率传输效率（PTE）和失调效应方面的有效性。此外，还进行了平面和角度失调的实验研究，以证明WPT系统的抗扰性。当Rx发生横向位移时，该WPT系统提供了30%的PTE，这意味着Rx不会保持在Tx的前面。此外，由于角度不对中，效率几乎没有变化。
Unlikely for a far-field wireless power transfer (WPT) system, designing a metasurface is critical for a near-field WPT system. First, a robust near-field WPT system using open-loop spiral resonators and a metasurface are designed, and then, the effectiveness of the metasurface is investigated in improving the power transfer efficiency (PTE) and misalignment effects. Furthermore, a study of planar and angular misalignments is also executed experimentally to prove the WPT system immunity. The proposed WPT system offers a PTE of 30% when the Rx shifts by the lateral length of the Rx that means the Rx does not remain in front of the Tx. Moreover, the efficiency is almost unchanged due to the angular misalignment.