Title:
SUPERCONDUCTING MAGNET DEVICE, AND METHOD OF IMPARTING ELECTRIC CURRENT INTO SUPERCONDUCTING MAGNET
Document Type and Number:
WIPO Patent Application WO/2011/074092
Kind Code:
A1
Abstract:
Disclosed is a superconducting magnet device capable of emitting a stable magnetic field easily and inexpensively. A base configuration circuit (10) comprises a superconducting magnet (1), an excitation transformer (2), a switch (4), and a loss element (8). A primary circuit (20) is configured from the superconducting magnet (1), a second coil (12) of the excitation transformer (2), and the loss element (8), with the switch (4) in the off state. A closed circuit (30) and a closed circuit (40) are configured by switching on the switch (4). A prescribed electric current is supplied from a power supply (3) to a first coil (11) of the excitation transformer (2), electric current is induced in the second coil (12) of the excitation transformer (2), and electric current flows upon the closed circuit (40). When the switch (4) is switched off and the electric current upon the first coil (11) of the excitation transformer (2) is returned to zero (or a preset value), the primary circuit (20) is configured and the electric current that flowed upon the closed circuit (40) is extended upon the primary circuit (20), preserving a given electric current thereupon.
Inventors:
WAKUDA Tsuyoshi (Hitachi Ltd., 1-1, Omika-cho 7-chome, Hitachi-sh, Ibaraki 92, 〒3191292, JP)
Application Number:
JP2009/071020
Publication Date:
June 23, 2011
Filing Date:
December 17, 2009
Export Citation:
Assignee:
HITACHI, LTD. (6-6 Marunouchi 1-chome, Chiyoda-ku Tokyo, 80, 〒1008280, JP)
株式会社日立製作所 (〒80 東京都千代田区丸の内一丁目６番６号 Tokyo, 〒1008280, JP)
株式会社日立製作所 (〒80 東京都千代田区丸の内一丁目６番６号 Tokyo, 〒1008280, JP)
International Classes:
H01F6/00
Attorney, Agent or Firm:
ISONO Michizo (Sabo Kaikan Annex 7-4, Hirakawa-cho 2-chome, Chiyoda-k, Tokyo 93, 〒1020093, JP)