High power transmission efficiency of wireless power transfer system using high-quality factor superconducting bulk coil

被引：1
|
作者：
Oshimoto, Natsuka [1 ]
Sakuma, Keita [1 ]
Ono, Satoshi [2 ]
Sekiya, Naoto [1 ]
机构：
[1] Univ Yamanashi, Integrated Grad Sch Med Engn & Agr Sci, Kofu, Yamanashi 4008511, Japan
[2] Univ Electrocommun, Grad Sch Informat & Engn, Bunkyo, Tokyo 1828585, Japan
来源：
APPLIED PHYSICS EXPRESS | 2023年 / 16卷 / 02期
关键词：
high-temperature superconductors; wireless power transfer; superconducting bulk coils; quality factor;
D O I：
10.35848/1882-0786/acbae0
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We developed a high-quality-factor high-temperature superconducting (HTS) bulk coil to increase the power transfer efficiency (PTE) of wireless power transfer (WPT) systems. We proposed the resonant frequency tuning by using the two sapphire substrates thickness of coil support. The configuration of a 65 mm diameter HTS bulk coil was optimized to a resonant frequency of 64 MHz. The measured quality factor of the HTS bulk coil was 9,431, which is 12 times that of the copper coil. At the transfer distance of 20 cm, the measured PTE of the WPT system using HTS bulk coils and one using copper coils were 74.8% and 20.6%, respectively.
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页数：5
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