Stacked Metasurfaces for Misalignment Improvement of WPT System Using Spiral Resonators
Stacked Metasurfaces for Misalignment Improvement of WPT System Using Spiral Resonators
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使用螺旋谐振器的堆叠超表面改善 WPT 系统的失准
DOI：
10.23919/eumc50147.2022.9784281
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
R. Pokharel
中科院分区：
文献类型：
--
作者：
Yutaro Ikeda;Xin Jiang;M. Aboualalaa;A. Barakat;K. Yoshitomi;R. Pokharel
传统的感应无线功率传输(WPT)系统需要在传输距离和大小之间进行权衡。此外，当发射机和接收机离开视线时，由于这种所谓的不对准而导致的性能将急剧下降。在这项工作中，提出了一种新的亚曲面--堆叠亚曲面，并通过实验研究了它对缓解上述问题的有效性。结果，利用所提出的亚表面，我们成功地实现了发射机和接收器之间的传输距离为70 mm，比没有元表面时的原始传输距离增加了一倍多，当出现最大效率时。在这种增强的传输距离下，WPT系统的效率从2%提高到60%。
The conventional inductive wireless power transfer (WPT) systems have a trade-off between transmission distance and size. Furthermore, when the transmitter and receiver go away from the line of sight, the performance due to this so-called misalignment will sharply drop. In this work, a new type of metasurfaces called stacked metasurface is proposed, and its effectiveness to mitigate above problems are studied experimentally. As a result, by using the proposed metasurface, we succeeded in achieving a transmission distance between the transmitter and the receiver of 70 mm, which is more than double than its original transmission distance without the metasurface when the maximum efficiency occurs. At this enhanced transmission distance, the efficiency of the WPT system has improved from 2% to 60%.