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首页> 外文期刊>Applied Computational Electromagnetics Society journal >Effects of Coil Locations on Wireless Power Transfer via Magnetic Resonance Coupling
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Effects of Coil Locations on Wireless Power Transfer via Magnetic Resonance Coupling

机译：线圈位置对磁共振耦合无线功率传输的影响

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摘要

The coil locations have strong impacts on efficiency, resonant frequency and bandwidth in the wireless power transfer (WPT) system with four coil resonators, which is a popular configuration for mid-range WPT via magnetic resonance coupling. Herein, effects of coil location parameters, such as the distances between neighboring coils, are investigated by virtue of full-wave electromagnetic solution and validated by measurements. Three operational regions can be defined in terms of the distances between neighboring coils: over coupling, strong coupling and under coupling. It is shown that the distance between the receiving coil and the load coil has significant impact on the power transfer efficiency whereas the distance between the driving coil and the transmitting coil may merely affect the bandwidth and the resonant frequency in the strong coupling regime. In addition, the distance between the transmitting coil and the receiving coil can have strong impact on both the bandwidth and the resonant frequency. Design guidelines for optimal coil locations, by which the highest transfer efficiency or the longest transfer distance can be achieved, are also discussed.
机译：在具有四个线圈谐振器的无线电力传输（WPT）系统中，线圈位置对效率，谐振频率和带宽有很大影响，这是通过磁共振耦合对中档WPT进行的流行配置。在此，借助于全波电磁解决方案来研究诸如相邻线圈之间的距离之类的线圈位置参数的影响，并通过测量来验证。可以根据相邻线圈之间的距离定义三个工作区域：过耦合，强耦合和欠耦合。结果表明，在强耦合状态下，接收线圈和负载线圈之间的距离对功率传输效率有显着影响，而驱动线圈和发射线圈之间的距离可能仅影响带宽和谐振频率。此外，发射线圈和接收线圈之间的距离可能对带宽和谐振频率都有很大影响。还讨论了最佳线圈位置的设计准则，通过该准则可以实现最高的传输效率或最长的传输距离。

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