Temperature dependence of power transfer efficiency and power handling capability of wireless power transfer system using superconducting bulk coil

Natsuka Oshimoto; Takanori Fujita; Keita Sakuma; Naoto Sekiya

doi:10.35848/1882-0786/ad346a

Applied Physics Express (Jan 2024)

Temperature dependence of power transfer efficiency and power handling capability of wireless power transfer system using superconducting bulk coil

Natsuka Oshimoto,
Takanori Fujita,
Keita Sakuma,
Naoto Sekiya

Affiliations

Natsuka Oshimoto: ORCiD; The Integrated Graduate School of Medicine, Engineering, and Agricultural Sciences, University of Yamanashi , Kofu, Yamanashi 400-8511, Japan
Takanori Fujita: The Integrated Graduate School of Medicine, Engineering, and Agricultural Sciences, University of Yamanashi , Kofu, Yamanashi 400-8511, Japan
Keita Sakuma: The Integrated Graduate School of Medicine, Engineering, and Agricultural Sciences, University of Yamanashi , Kofu, Yamanashi 400-8511, Japan
Naoto Sekiya: The Integrated Graduate School of Medicine, Engineering, and Agricultural Sciences, University of Yamanashi , Kofu, Yamanashi 400-8511, Japan

DOI: https://doi.org/10.35848/1882-0786/ad346a
Journal volume & issue: Vol. 17, no. 4
p. 043001

Abstract

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We developed a cryocooler system to reveal the temperature dependence of the quality ( Q ) factor of high-temperature superconducting (HTS) bulk coil and the power transfer efficiency (PTE) and power handling capability (PHC) of a wireless power transfer (WPT) system using the HTS bulk coil. The measured Q factors of the HTS bulk coil were 9051 at 77 K and 14 050 at 25 K. The measured PTEs and PHCs of the WPT system were 44.2% and 4.48 W at 77 K, and 50.8% and 25.2 W at 25 K.

Published in Applied Physics Express

ISSN: 1882-0778 (Print); 1882-0786 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Science: Physics
Website: https://iopscience.iop.org/journal/1882-0786

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