Trial Manufacture and Evaluation of Superconducting Magnetic Bearings

Autor:	Hirochika Ueyama, Ryoichi Takahata
Rok vydání:	1994
Předmět:	Superconductivity Engineering Rotor (electric) business.industry Mechanical Engineering Magnetic bearing Mechanical engineering Electromagnetic suspension Liquid nitrogen Run-out law.invention Control theory law Condensed Matter::Superconductivity Magnet business Pinning force
Zdroj:	Journal of the Japan Society for Precision Engineering. 60:1127-1131
ISSN:	1882-675X 0912-0289
DOI:	10.2493/jjspe.60.1127
Popis:	High-temperature superconductor YBa2Cu3O7-x with strong pinning force has allowed the realization of stable magnetic suspension with no control. Superconducting magnetic bearing (SMB) using YBCO and permanent magnet, and SMB operation system were assembled. TWO SMB cooled down in a field cooling state by liquid nitrogen were proved to support a rotor weighing 2.5 kg up to 42 000 rpm. A radial run out of the rotor was 8 μm or less. The value can be considered for practical applications. The rotating performance at high speed has been disclosed by an active control assist in radial direction during accelerations.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6289af30df52961fa326fbfe569be9a2 https://doi.org/10.2493/jjspe.60.1127 Zobrazit plný text záznamu