SUPERCONDUCTING COIL QUENCH DETECTION METHOD AND DEVICE, AND SUPERCONDUCTING POWER STORAGE UNIT

Title:

SUPERCONDUCTING COIL QUENCH DETECTION METHOD AND DEVICE, AND SUPERCONDUCTING POWER STORAGE UNIT

Document Type and Number:

WIPO Patent Application WO/2006/115126

Kind Code:

A1

Abstract:

A superconducting coil quench detection method and device capable of detecting a quench detection voltage even in a superconducting coil where a plurality of element coils are connected with a plurality of current sources and operated with repetitive pulses or AC and a voltage of several kV is applied continuously as an induction voltage. A superconducting power storage unit is also provided. The quench detection device comprises a pickup coil (2) provided in a superconducting coil (1) or in the vicinity thereof, an overvoltage protection circuit (4) outputting a voltage signal below a predetermined level by receiving the difference between a voltage induced in the superconducting coil (1) at the time of quenching of the superconducting coil (1) and a voltage induced in the pickup coil (2), and a quench detector (3) for detecting quench of the superconducting coil (1) by receiving the voltage signal.

Inventors:

KURUSU TSUTOMU (JP)
ONO MICHITAKA (JP)
TOSAKA TAIZO (JP)
ISHII YUSUKE (JP)
YAMASHITA YASUHIRO (JP)

Application Number:

PCT/JP2006/308141

Publication Date:

November 02, 2006

Filing Date:

April 18, 2006

Export Citation:

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Assignee:

TOSHIBA KK (JP)
KURUSU TSUTOMU (JP)
ONO MICHITAKA (JP)
TOSAKA TAIZO (JP)
ISHII YUSUKE (JP)
YAMASHITA YASUHIRO (JP)

International Classes:

H01F6/02; H01F6/00

Foreign References:

JPH08138927A	1996-05-31
JPS61289611A	1986-12-19
JPH05316633A	1993-11-26
JPS633405A	1988-01-08
JPH0984252A	1997-03-28

Other References: