Excitation Characteristics of MgB2 Race-track Coil Immersed in Liquid Hydrogen

Autor:	Yoshihiro Naruo, Y Iwami, Masahiro Shiotsu, Yasuyuki Shirai, Hiroaki Kobayashi, Satoshi Nonaka, Y Inatani, Taito Matsumoto, Takaaki Suzuki, Hideki Tanaka, Motomune Kodama, S. Hara
Rok vydání:	2020
Předmět:	Superconductivity History Materials science Superconducting electric machine Bending Computer Science Applications Education law.invention Load line law Electromagnetic coil Magnet Composite material Liquid hydrogen Excitation
Zdroj:	Journal of Physics: Conference Series. 1559:012147
ISSN:	1742-6596 1742-6588
Popis:	Our research group has been researched for developing MgB2 superconducting energy apparatus in liquid hydrogen immersion cooling, such as superconducting generators. In this study, two-pole MgB2 race-track coil, which was a model for a few tens kVA superconducting generator field magnet, was designed and made. This coil consists of two pieces of a similar MgB2 race-track coil which has 529 turn with straight section of 150 mm, bending diameter in the end of section of 100 mm and thickness of 34 mm. We carried out excitation tests of the coil immersed in liquid hydrogen at the temperature of 21 K to 32 K, and the load line of the coil was obtained. The critical current under self-field was obtained for various temperatures. The normal zone propagation behavior of the coil at the quench was also investigated using several potential taps installed in the coil.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8d03094ec2c763ca7b42c462a058dc08 https://doi.org/10.1088/1742-6596/1559/1/012147 Zobrazit plný text záznamu