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A Metamaterial-Coupled Wireless Power Transfer System Based on Cubic High Dielectric Resonators
IEEE Transactions on Industrial Electronics ( IF 7.7 ) Pub Date : 2019-09-01 , DOI: 10.1109/tie.2018.2879310
Rupam Das , Abdul Basir , Hyoungsuk Yoo

In this paper, a metamaterial-coupled, highly efficient, miniaturized, and long-range wireless power transfer (WPT) system based on a cubic high-dielectric resonator (CHDR) is explored. The proposed WPT system consists of two CHDR metamaterials separated by a distance and excited by two rectangular coils. Initially, this WPT system is analyzed by considering the cube dielectric permittivity, $\varepsilon _{r}$ = 1000, and loss tangent, tan$\delta$ = 0.00001. From the Ansoft HFSS simulation, it is observed that the system operates in the hybrid resonance mode resonating as a horizontal magnetic dipole providing more than 90% power transfer efficiency at a distance of 0.1$\lambda$. In addition, parametric studies regarding the transmitter and receiver sizes, loss tangent, receiver misorientation, cube periodicity, etc., are carried out. One of the significant findings of this parametric study reveals that the suggested WPT system is less sensitive to the displacement of the receiver coil, and the WPT efficiency due to misorientation of the receiver can be increased by changing the CHDR cube rotation. Due to inaccessibility of the very high $\varepsilon _{r}$ = 1000, 18 microwave ceramic samples of EXXELIA TEMEX E5080 (Oxide composition: Ba Sm Ti), which has a permittivity, $\varepsilon _{r}$ = 78, permeability, $\mu _{r}$ = 1, and a loss tangent, tan$\delta$ = 0.0004, was made for experimental verification. These cubes are surrounded by Teflon to make the CHDR resonators. From simulations and measurements, it is found that the proposed system outperforms the most recent high-dielectric or copper-based WPT systems in terms of efficiency, range, size, and specific absorption rate.

中文翻译:

基于立方高介电谐振器的超材料耦合无线电能传输系统

在本文中,探索了一种基于立方高介电谐振器 (CHDR) 的超材料耦合、高效、小型化和远程无线电力传输 (WPT) 系统。所提出的 WPT 系统由两个相距一定距离并由两个矩形线圈激发的 CHDR 超材料组成。最初,通过考虑立方介电常数来分析该 WPT 系统,$\varepsilon _{r}$ = 1000,和损耗角正切,tan$\delta$= 0.00001。从 Ansoft HFSS 仿真中可以看出,系统在混合谐振模式下运行,作为水平磁偶极子谐振,在 0.1 的距离处提供超过 90% 的功率传输效率$\lambda$. 此外,还进行了有关发射器和接收器尺寸、损耗角正切、接收器定向误差、立方体周期等的参数研究。这项参数研究的一个重要发现表明,建议的 WPT 系统对接收器线圈的位移不太敏感,并且可以通过改变 CHDR 立方体旋转来提高由于接收器方向错误而导致的 WPT 效率。由于无法进入非常高的$\varepsilon _{r}$ = 1000,EXXELIA TEMEX E5080(氧化物成分:Ba Sm Ti)的18个微波陶瓷样品,具有介电常数, $\varepsilon _{r}$ = 78,渗透率, $\mu _{r}$ = 1,和一个损耗角正切,tan$\delta$= 0.0004,用于实验验证。这些立方体被聚四氟乙烯包围以制成 CHDR 谐振器。从模拟和测量中发现,所提出的系统在效率、范围、尺寸和比吸收率方面优于最新的高介电或基于铜的 WPT 系统。
更新日期:2019-09-01
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