Resonance and EMI in vertical multi-coupled coils for wireless power transfer (WPT) system

2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications Pub Date : 2012-05-10 DOI:10.1109/IMWS.2012.6215772

Sunkyu Kong, J. J. Kim, Joungho Kim

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引用次数: 3

Abstract

Wireless power transfer (WPT) using magnetic resonance could provide much convenience and so there has been much commercial interests on WPT recently. In the near future, WPT technology is expected to be applied to various electronic devices with transceiver coils for WPT. The coils in different electronic devices for WPT, then, could cause interference on each other. These environments could make a resonance peak for maximum power to divide into several peaks, and have an effect on transferred power and electromagnetic interference (EMI). Therefore, it is needed to measure and analyze various cases for different number of coils in WPT systems. In this paper, we have measured a resonance in vertical multi-coupled coils in the case of tight magnetic coupling. And we have analyzed the transferred power with respect to resonances of vertical multi-coupled coils. We also have measured EMI in vertical multi-coupled coils and analyzed EMI in frequency domain with respect to resonances of vertical multi-coupled coils for WPT systems.

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无线电力传输(WPT)系统中垂直多耦合线圈的共振和电磁干扰

利用磁共振技术进行无线电力传输具有极大的便利性，近年来引起了广泛的商业关注。在不久的将来，WPT技术有望应用于各种具有WPT收发线圈的电子设备中。因此，不同的WPT电子设备中的线圈可能会对彼此产生干扰。这些环境会使一个最大功率的共振峰分成几个峰值，并对传输功率和电磁干扰(EMI)产生影响。因此，需要对WPT系统中不同线圈数的各种情况进行测量和分析。在本文中，我们测量了垂直多耦合线圈在紧密磁耦合情况下的共振。并分析了垂直多耦合线圈的共振特性对传递功率的影响。我们还测量了垂直多耦合线圈中的电磁干扰，并分析了WPT系统中垂直多耦合线圈共振的频域电磁干扰。

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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2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications

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