JP5383651B2 - 準永久超電導磁石におけるクエンチ保護および減衰安定化のための装置 - Google Patents
準永久超電導磁石におけるクエンチ保護および減衰安定化のための装置 Download PDFInfo
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- JP5383651B2 JP5383651B2 JP2010501596A JP2010501596A JP5383651B2 JP 5383651 B2 JP5383651 B2 JP 5383651B2 JP 2010501596 A JP2010501596 A JP 2010501596A JP 2010501596 A JP2010501596 A JP 2010501596A JP 5383651 B2 JP5383651 B2 JP 5383651B2
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- 238000010791 quenching Methods 0.000 title claims description 22
- 230000006641 stabilisation Effects 0.000 title description 9
- 238000011105 stabilization Methods 0.000 title description 9
- 238000013016 damping Methods 0.000 title description 5
- 230000001681 protective effect Effects 0.000 claims description 16
- 238000000034 method Methods 0.000 description 19
- 230000008859 change Effects 0.000 description 17
- 230000006378 damage Effects 0.000 description 6
- 230000001965 increasing effect Effects 0.000 description 6
- 230000002829 reductive effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- 230000000087 stabilizing effect Effects 0.000 description 4
- 239000002887 superconductor Substances 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- VPSXHKGJZJCWLV-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-3-(1-ethylpiperidin-4-yl)oxypyrazol-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C=1C(=NN(C=1)CC(=O)N1CC2=C(CC1)NN=N2)OC1CCN(CC1)CC VPSXHKGJZJCWLV-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
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- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/005—Methods and means for increasing the stored energy in superconductive coils by increments (flux pumps)
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
- G01R33/381—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets
- G01R33/3815—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets with superconducting coils, e.g. power supply therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F2006/001—Constructive details of inductive current limiters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/001—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for superconducting apparatus, e.g. coils, lines, machines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Emergency Protection Circuit Devices (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Fertilizers (AREA)
- Powder Metallurgy (AREA)
- Superconductor Devices And Manufacturing Methods Thereof (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Description
i)スイッチ3を開いて電源4から磁石1に通電するステップと、
ii)スイッチ3を閉じるステップと、
iii)稼動量発生する磁界のドリフトを低減させるように、電源4からの電流供給を変化させるステップと、
を備えた方法をも記載している。
iv)磁界減衰を監視するステップ、および
磁界減衰を低減するようにステップiii)で異なる電流変化を用いてステップiii)〜iv)を繰り返すステップ、
を含む。この反復技法は追加コンポーネントの必要性を回避する。
増大した電源電流は磁石1に流れず(スイッチ3が閉じる)、スイッチ3および抵抗器5のみに流れることを理解されたい。これは、ひとたびスイッチ3が閉じると、電源の電流の変化が、スイッチ回路および磁石回路の両方に分割されて流れるためである。2つの電流間の比率は、回路のインダクタンスの逆比によって決定される。磁石は非常に大きいインダクタンス(一般的に100H)を有し、スイッチのインダクタンスは非常に小さい(一般的に100ナノヘンリー)ので、電流比は10-9であり、したがって全ての実践的な考察では、全ての電源電流変化はスイッチ回路に流れる。ここでは、永久モード時とは異なり、磁石1の動作中に、電源ユニット4は接続されたままであり、電流I+ΔIを回路に供給することも留意されたい。
I・R(磁石)=ΔI・R(抵抗器5) [1]
の場合である。
磁石インダクタンス=100ヘンリー
磁石抵抗=10-7Ω
抵抗器5=10-6Ω
I電源=100アンペア
ΔI過電流=10アンペア
通常「永久モード」で動作する磁石は、10-9秒の時定数または3.6ppm/時の減衰率を示す。
Claims (5)
- 稼動条件下で稼動量の磁界を発生させる超電導磁石(1)と、前記磁石をさらにDC電源(4)と並列に接続するための接続手段(9)とを備え、それにより稼動条件下で前記磁石が前記電源によって通電されて、稼動量の所望の磁界を発生するように構成された超電導磁石アセンブリにおいて、
前記超電導磁石が超電導故障電流限流器(7)および抵抗器(5)の直列組合せと並列に接続され、さらに保護抵抗器(8)と並列に接続され、これにより、クエンチ条件下において、前記超電導故障電流限流器(7)が抵抗性となることによって電流が前記保護抵抗器(8)を流れるようにし、前記超電導磁石からエネルギーを放散するようにしてなることを特徴とする超電導磁石アセンブリ。 - DC電源(4)が、前記磁石と並列に、かつ前記故障電流限流器(7)および前記抵抗器(5)の直列組合せと並列に、前記接続手段に接続される、請求項1に記載の超電導磁石アセンブリ。
- 前記抵抗器(5)が、前記磁石(1)の抵抗(2)の1〜1000倍の範囲の抵抗を有する、請求項1または2に記載の超電導磁石アセンブリ。
- 前記抵抗器(5)が、前記磁石(1)の抵抗(2)の10〜100倍の範囲の抵抗を有する、請求項1ないし3のいずれか一項に記載の超電導磁石アセンブリ。
- 前記電源、磁石、および抵抗は、使用中に発生する磁界の不安定性が実質的に10ppm/時未満となるように構成される、請求項1ないし4のいずれか一項に記載の超電導磁石アセンブリ。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0706399.3 | 2007-04-02 | ||
GBGB0706399.3A GB0706399D0 (en) | 2007-04-02 | 2007-04-02 | Apparatus for stabilising decay in a resistive magnet and quench protection |
GB0709875A GB2448197B (en) | 2007-04-02 | 2007-05-23 | Apparatus for stabilising decay in a quasi-persistent superconducting magnet and quench protection |
GB0709875.9 | 2007-05-23 | ||
PCT/GB2008/050142 WO2008120007A1 (en) | 2007-04-02 | 2008-02-29 | Apparatus for quench protection and stabilising decay in a quasi-persistent superconducting magnet |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2010524219A JP2010524219A (ja) | 2010-07-15 |
JP5383651B2 true JP5383651B2 (ja) | 2014-01-08 |
Family
ID=38050688
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010501596A Active JP5383651B2 (ja) | 2007-04-02 | 2008-02-29 | 準永久超電導磁石におけるクエンチ保護および減衰安定化のための装置 |
Country Status (8)
Country | Link |
---|---|
US (1) | US8154830B2 (ja) |
EP (1) | EP2132753B1 (ja) |
JP (1) | JP5383651B2 (ja) |
CN (1) | CN101681711B (ja) |
AT (1) | ATE481720T1 (ja) |
DE (1) | DE602008002569D1 (ja) |
GB (2) | GB0706399D0 (ja) |
WO (1) | WO2008120007A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090103217A1 (en) * | 2007-10-17 | 2009-04-23 | General Electric Company | System and apparatus for limiting current in a superconducting coil |
JP5255425B2 (ja) * | 2008-12-22 | 2013-08-07 | 株式会社日立製作所 | 電磁石装置 |
CN102412047B (zh) * | 2010-09-21 | 2014-07-30 | 通用电气公司 | 超导磁体及超导磁体系统 |
CN102903473B (zh) | 2011-07-29 | 2016-03-30 | 通用电气公司 | 超导磁体系统 |
RU2015115705A (ru) * | 2012-09-27 | 2016-11-20 | Конинклейке Филипс Н.В. | Система и способ автоматического охлаждения сверхпроводящего постоянного магнита |
CN103323697B (zh) * | 2013-05-23 | 2015-11-11 | 国家电网公司 | 一种直流电源测试高温超导电缆的系统及方法 |
JP6601797B2 (ja) * | 2015-10-16 | 2019-11-06 | 国立研究開発法人理化学研究所 | 超伝導磁石装置とその異常時の電流低下抑制方法 |
EP3747060B1 (en) * | 2018-01-30 | 2022-04-13 | Tokamak Energy Ltd | Monitoring device for cryogenic system |
CN111681848B (zh) * | 2020-06-11 | 2022-03-08 | 中国科学院电工研究所 | 铁基超导线圈及制备方法及测量铁基超导接头电阻的方法 |
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US3703664A (en) * | 1970-10-05 | 1972-11-21 | Ite Imperial Corp | Fault current limiter using superconductive element |
JPS54142569A (en) * | 1978-04-27 | 1979-11-06 | Tokyo Shibaura Electric Co | Excitor for superconductive coil |
JPS6367708A (ja) * | 1986-09-09 | 1988-03-26 | Mitsubishi Electric Corp | 緊急消磁装置付き超電導マグネツト装置 |
JPH0256467U (ja) * | 1988-10-17 | 1990-04-24 | ||
JPH0311706A (ja) | 1989-06-09 | 1991-01-21 | Toshiba Corp | 超電導コイル電源 |
JPH03272107A (ja) * | 1990-03-22 | 1991-12-03 | Toshiba Corp | 超電導磁石 |
JPH04359626A (ja) | 1991-06-04 | 1992-12-11 | Tokyo Electric Power Co Inc:The | 限流装置 |
JPH0759132B2 (ja) * | 1991-09-06 | 1995-06-21 | 愛知電機株式会社 | 超電導コイルの保護装置 |
JPH07183582A (ja) * | 1993-12-22 | 1995-07-21 | Furukawa Electric Co Ltd:The | 並列型永久電流スイッチ |
JPH104011A (ja) * | 1996-06-18 | 1998-01-06 | Toshiba Corp | 無誘導超電導コイル |
GB0121846D0 (en) * | 2001-09-10 | 2001-10-31 | Oxford Instr Superconductivity | Superconducting magnet assembly and method |
US6958893B2 (en) * | 2003-06-30 | 2005-10-25 | Superpower Inc. | Superconducting matrix fault current limiter with current-driven trigger mechanism |
GB0315663D0 (en) * | 2003-07-04 | 2003-08-13 | Rolls Royce Plc | A fault current limiter |
US8037695B2 (en) * | 2003-07-04 | 2011-10-18 | Rolls-Royce Plc | Fault current limiter |
US7440244B2 (en) * | 2005-04-02 | 2008-10-21 | Superpower, Inc. | Self-triggering superconducting fault current limiter |
DE102005020690B4 (de) * | 2005-05-03 | 2007-08-30 | Bruker Biospin Ag | Magnetanordnung mit Vorrichtung zum Dämpfen von Spannungsspitzen einer Speisung |
DE102005034837B4 (de) * | 2005-07-26 | 2017-12-21 | Bruker Biospin Gmbh | Supraleitende Magnetanordnung mit Schalter |
DE102005040374B4 (de) * | 2005-08-25 | 2008-10-02 | Bruker Biospin Ag | Supraleitende Magnetanordnung mit kontaktierbaren Widerstandselementen |
US7630179B2 (en) * | 2005-09-22 | 2009-12-08 | Reliance Electric Technologies, Llc | Protective link for superconducting coil |
KR100662754B1 (ko) * | 2005-12-02 | 2007-01-02 | 엘에스산전 주식회사 | 초전도 저항형 한류기 |
US20070263328A1 (en) * | 2006-05-09 | 2007-11-15 | Intermagnetics General Corporation | Circuit including a superconducting element and a switch, a system including the circuit, and a method of using the system |
JP5233011B2 (ja) * | 2008-04-30 | 2013-07-10 | 株式会社前川製作所 | 超電導限流器 |
-
2007
- 2007-04-02 GB GBGB0706399.3A patent/GB0706399D0/en not_active Ceased
- 2007-05-23 GB GB0709875A patent/GB2448197B/en not_active Expired - Fee Related
-
2008
- 2008-02-29 AT AT08709662T patent/ATE481720T1/de not_active IP Right Cessation
- 2008-02-29 EP EP08709662A patent/EP2132753B1/en active Active
- 2008-02-29 WO PCT/GB2008/050142 patent/WO2008120007A1/en active Application Filing
- 2008-02-29 JP JP2010501596A patent/JP5383651B2/ja active Active
- 2008-02-29 DE DE602008002569T patent/DE602008002569D1/de active Active
- 2008-02-29 US US12/525,025 patent/US8154830B2/en active Active
- 2008-02-29 CN CN2008800087421A patent/CN101681711B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
GB0706399D0 (en) | 2007-05-09 |
DE602008002569D1 (de) | 2010-10-28 |
CN101681711A (zh) | 2010-03-24 |
WO2008120007A1 (en) | 2008-10-09 |
EP2132753B1 (en) | 2010-09-15 |
GB0709875D0 (en) | 2007-07-04 |
EP2132753A1 (en) | 2009-12-16 |
US8154830B2 (en) | 2012-04-10 |
GB2448197A (en) | 2008-10-08 |
JP2010524219A (ja) | 2010-07-15 |
CN101681711B (zh) | 2013-06-05 |
GB2448197B (en) | 2009-05-20 |
US20100073115A1 (en) | 2010-03-25 |
ATE481720T1 (de) | 2010-10-15 |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |