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JPS5495196A - Protective circuit of superconductive coil - Google Patents

Protective circuit of superconductive coil

Info

Publication number
JPS5495196A
JPS5495196AJP191178AJP191178AJPS5495196AJP S5495196 AJPS5495196 AJP S5495196AJP 191178 AJP191178 AJP 191178AJP 191178 AJP191178 AJP 191178AJP S5495196 AJPS5495196 AJP S5495196A
Authority
JP
Japan
Prior art keywords
coil
voltage
integrator
generated
breaker
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP191178A
Other languages
Japanese (ja)
Inventor
Takashi Toyoda
Yoshinaga Nakayama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co LtdfiledCriticalToshiba Corp
Priority to JP191178ApriorityCriticalpatent/JPS5495196A/en
Publication of JPS5495196ApublicationCriticalpatent/JPS5495196A/en
Pendinglegal-statusCriticalCurrent

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Abstract

PURPOSE:To ensure the operation of a current breaker to improve reliability by detecting the abnormal voltage, which is generated in a super-conductive coil, through a search coil and an integrator, which are provided near this coil, and breaking the current to the superconductive coil when the abnormal voltage is generated. CONSTITUTION:Superconductive coil 3 is connected to power source 1 through current breaker 2, and protective resistance 4 is inserted between both terminals 5 and 6 of coil 3. Next, integrator 17 is connected to terminals 5 and 6 through search coil 12 and voltage divider 13, and the output terminal of integrator 17 is connected to input terminals 10 and 11 of current breaking signals provided in breaker 2. In this constitution, search coil 12 is arranged closely to superconductive coil 3, and the position of movable tap 16 of voltage divider 13 is so adjusted that the induced voltage may be cancelled in case of a normal voltage. However, since the induced voltage is generated in voltage divider 13 when an abnormal conductive part is generated in superconductive coil 3 and the abnormal voltage appears, this induced voltage is integrated by integrator 17; and when the result exceeds a fixed value, breaker 2 is operated.
JP191178A1978-01-131978-01-13Protective circuit of superconductive coilPendingJPS5495196A (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP191178AJPS5495196A (en)1978-01-131978-01-13Protective circuit of superconductive coil

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP191178AJPS5495196A (en)1978-01-131978-01-13Protective circuit of superconductive coil

Publications (1)

Publication NumberPublication Date
JPS5495196Atrue JPS5495196A (en)1979-07-27

Family

ID=11514754

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP191178APendingJPS5495196A (en)1978-01-131978-01-13Protective circuit of superconductive coil

Country Status (1)

CountryLink
JP (1)JPS5495196A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS5994805A (en)*1982-11-241984-05-31Toshiba CorpSuperconductive magnet
JPS59152604A (en)*1983-02-211984-08-31Toshiba CorpQuenching detection system of superconductive coil
US5502613A (en)*1992-07-151996-03-26Hitachi, Ltd.Superconducting magnet abnormality detection and protection apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS5994805A (en)*1982-11-241984-05-31Toshiba CorpSuperconductive magnet
JPS59152604A (en)*1983-02-211984-08-31Toshiba CorpQuenching detection system of superconductive coil
US5502613A (en)*1992-07-151996-03-26Hitachi, Ltd.Superconducting magnet abnormality detection and protection apparatus

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