IEICE Electronics Express
Online ISSN : 1349-2543
A novel dumbbell-shaped coil featured with cross coupling suppression for long distance relay wireless power transfer applications
Xiaoxiong ZhangBin LuoYao HuShengbin LiuChenming Zhong
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JOURNALS FREE ACCESS Advance online publication

Article ID: 14.20170790

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Abstract

The use of multi-resonators for medium-range wireless power transfer (WPT) systems is an important concern; the cross-couplings between non-adjacent coils have an adversely impact on the transmission distance and efficiency of the system. This paper proposes a dumbbell-shaped (DS) coil in a WPT system. The DS coil structure was analyzed theoretically and verified experimentally. The proposed scheme eliminates cross-couplings between non-adjacent coils in the multiple resonator system to resolve frequency drift, and improve the transmission distance and efficiency in the multiple resonator system. The scheme features a coplanar structure which can secure direct-coupling and save space when applied in the home, office, and public areas.

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