Investigation of wireless power transfer with 3D metamaterial for efficiency enhancement

Junfeng Chen, H. Tan
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引用次数: 3

Abstract

Metamaterial have shown great power of controlling the EM waves, which is mainly about the propagation property of far field. In this paper, three-dimensional (3D) metamaterials are used in near field wireless power transfer (WPT) system for efficiency enhanced. The 3D metamaterial structure is composed of 4×4×1-array of five-turn spiral resonators. The WPT with bulk metamaterial is investigated theoretically, experimentally, and by simulation. To verify the enhancement of the WPT system by using 3D metamaterial, the four-coil systems integrated with and without bulk metamaterial are investigated by vector network analyzer (VNA). As a result, the maximum efficiency improvement of 20% is obtained with the 3D metamaterials at 1.5m transfer distance. At the same time, the range of efficient power transfer can be greatly extended.
利用三维超材料提高无线传输效率的研究
超材料对电磁波的控制能力很大,这主要表现在对远场传播特性的控制上。本文将三维超材料应用于近场无线电力传输系统中,以提高传输效率。三维超材料结构由五匝螺旋谐振腔4×4×1-array组成。本文从理论、实验和仿真三个方面对具有块状超材料的WPT进行了研究。为了验证三维超材料对WPT系统的增强作用,利用矢量网络分析仪(VNA)对集成和不集成块体超材料的四线圈系统进行了研究。结果表明,在1.5m的传输距离下,三维超材料的效率提高了20%。同时,可以大大扩展高效功率传输的范围。
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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