Title:
SUPERCONDUCTING COIL QUENCH DETECTOR AND DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2010/055885
Kind Code:
A1
Abstract:
It is desirable to detect a quench in a superconducting coil at an early stage while suppressing the effects of noise generated during charging and discharging of the coil. The superconducting coil quench detector detects a balance voltage in a bridge circuit formed with a superconducting coil and resistors and outputs same as a quench detection signal for detecting a quench in the superconducting coil. A signal indicating a retention time for retaining the energy accumulated in the superconducting coil is generated. A signal contained within the retention time is extracted out of the quench detection signal. The quench in the superconducting coil is detected based on the extracted signal.
Inventors:
KAWASHIMA HIROSHI (JP)
Application Number:
PCT/JP2009/069278
Publication Date:
May 20, 2010
Filing Date:
November 12, 2009
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
KAWASHIMA HIROSHI (JP)
KAWASHIMA HIROSHI (JP)
International Classes:
H01F6/00; G01R31/00; G01R31/50; H01F6/02; H02J15/00
Foreign References:
| JPH02202004A | 1990-08-10 | |||
| JPS61262038A | 1986-11-20 | |||
| JPH0984252A | 1997-03-28 | |||
| JPH08330128A | 1996-12-13 | |||
| JP2001274014A | 2001-10-05 | |||
| JP2008289982A | 2008-12-04 |
Other References:
See also references of EP 2348515A4
Attorney, Agent or Firm:
KUDOH, Minoru (JP)
Minoru Kudo (JP)
Minoru Kudo (JP)
Download PDF:
Previous Patent: METHOD FOR PRODUCING PYRAZINE DERIVATIVE AND INTERMEDIATE THEREOF
Next Patent: AGENT FOR CONTROL OF SENSITIVITY TO ULTRAVIOLET LIGHT
Next Patent: AGENT FOR CONTROL OF SENSITIVITY TO ULTRAVIOLET LIGHT