A novel dumbbell-shaped coil featured with cross coupling suppression for long distance relay wireless power transfer applications

作者：Zhang, Xiaoxiong; Luo, Bin^*; Hu, Yao; Liu, Shengbin; Zhong, Chenming

来源：IEICE Electronics Express, 2017, 14(19): 20170790.

DOI：10.1587/elex.14.20170790

• cross-coupling
• long distance
• relay resonator
• wireless power transfer (WPT)

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.

• 出版日期2017-10-10
• 单位南昌大学