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首页> 外文期刊>IEEE Transactions on Industrial Electronics >Wireless Power Transfer Across a Metal Barrier by Combined Capacitive and Inductive Coupling
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Wireless Power Transfer Across a Metal Barrier by Combined Capacitive and Inductive Coupling

机译：电容和电感耦合的无线功率跨金属屏障传输

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摘要

This paper proposes a method to transfer power across a metal barrier wirelessly by combined capacitive and inductive coupling. At the primary side of the power transfer system a two plate coupling interface is designed to allow for a current flow in the metal barrier, which generates a magnetic field for transferring power via an inductive coil at the secondary side. The current distribution in the metal barrier is analyzed by taking the skin effect into consideration, based on which the magnetic field distribution around the metal surfaces is determined. A three-dimensional (3-D) model is established using a computer simulation technology (CST) package to simulate the magnetic field distribution, which gives consistent results compared to theoretical analysis. Finally, a wireless power transfer system is constructed, and practical measurements show that the magnetic flux density near the edges of the metal barrier is higher than that in the middle region. The output power around the edge is also higher although it is more sensitive to the variation of the distance and positioning of the receiving coil. It has demonstrated that more than 11 W of power can be transferred across an aluminum plate with a thickness of 2 mm when the power pickup is placed at an edge of the plate along the current path.
机译：本文提出了一种通过电容和电感耦合的方法在金属屏障上无线传输功率的方法。在功率传输系统的初级侧，设计了一个两极板耦合接口，以允许电流在金属屏障中流动，该电流会产生磁场，以便通过次级侧的感应线圈传输功率。通过考虑集肤效应来分析金属势垒中的电流分布，基于此可以确定金属表面周围的磁场分布。使用计算机仿真技术（CST）软件包建立了三维（3-D）模型，以模拟磁场分布，与理论分析相比，该模型给出了一致的结果。最后，构建了无线电力传输系统，实际测量表明，金属势垒边缘附近的磁通密度高于中间区域的磁通密度。边缘附近的输出功率也更高，尽管它对距离和接收线圈位置的变化更为敏感。已经证明，当将功率拾取器沿电流路径放置在铝板的厚度为2 mm的铝板上时，可以传递超过11 W的功率。

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