Current Distribution Among Transposed Eight- and 16-Parallel REBa2Cu3O y Wires in Single-Phase Armature Coils

• Published in: IEEE transactions on applied superconductivity Vol. 34; no. 3; p. 1
• Main Authors: Miura, Shun, Asato Kobun, Masuda, Yohei, Kawasaki, Goki, Miyazaki, Hiroshi, Kawagoe, Akifumi, Hiromasa Sasa, Yoshida, Koichi, Sato, Seiki, Iwakuma, Masataka
• Format: Journal Article
• Language: English
• Published: New York The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 01-01-2024
• Subjects: Conductors; Current distribution; Electric propulsion; Field coils; Mathematical analysis; Propulsion systems; Superconductivity; Synchronous motors
• ISSN: 1051-8223; 1558-2515
• DOI: 10.1109/TASC.2024.3356436

Fully superconducting synchronous motors employing superconducting armature and field coils, have a great possibility for electric propulsion systems in aircraft applications, owing to their high output power density (kW/kg). To realize a large current capacity in REBa2Cu3O y superconducting armature coils, we have proposed a cabling design for the transposed multi-strand parallel conductors. In this study, branch currents among eight- and 16-strand parallel conductors having only one transposition into a coil, were investigated. The analytical calculations showed approximately uniform branch current for the eight- and 16-strand conductors. According to the calculations, the deviations to the uniform branch current of eight-strand parallel conductors were ±7%. The approximately uniform current for the eight-strand conductors were also demonstrated experimentally by small-sized sample coils.