基于螺旋线圈的无线电力传输阻抗匹配

2020 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW) Pub Date : 2020-11-15 DOI:10.1109/WoW47795.2020.9291325

Yelzhas Zhaksylyk, U. Hanke, M. Azadmehr

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引用次数: 3

摘要

提出了一种适用于磁共振无线电力传输中有源阻抗匹配的可切换螺旋线圈。阻抗匹配网络由置于螺旋谐振器线圈匝数之间的单匝线圈组成。电感变化允许在无线电力传输(WPT)系统的距离范围内进行匹配。介绍了半径为103毫米的9匝线圈的测量结果。测量的单匝线圈的自感在43-510 nH之间变化。功率传输效率的测量验证了所提出的螺旋线圈在7 cm至25 cm之间的距离变化的下耦合区域提供有源阻抗匹配。螺旋线圈可以在PCB的一侧实现，另一侧可用于控制电路和路由，使其尺寸紧凑，生产成本可能更低。

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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Impedance Matching using Interspiraled Coils for Wireless Power Transfer

This paper presents switchable interspiraled coils suited for active impedance matching in magnetic resonance wireless power transfer. The impedance matching network consists of single-turn coils placed in-between turns of a spiral resonator coil. The inductance variation allows matching over a range of distances in Wireless Power Transfer (WPT) systems. Measurements of a 9 turn coil with radius of 103 mm is presented. The measured self-inductances of the single-turn coils vary between 43–510 nH. Measurement of the power transfer efficiency verifies that the proposed interspiraled coils offer an active impedance matching in the under-coupled region for distance changes between 7 cm to 25 cm, The interspiraled coils can be realized on one side of a PCB and the other side can be used for control circuitry and routing, making it compact in size and potentially cheaper in production.

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来源期刊

2020 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW)

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