JP2010524219A - 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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- JP2010524219A JP2010524219A JP2010501596A JP2010501596A JP2010524219A JP 2010524219 A JP2010524219 A JP 2010524219A JP 2010501596 A JP2010501596 A JP 2010501596A JP 2010501596 A JP2010501596 A JP 2010501596A JP 2010524219 A JP2010524219 A JP 2010524219A
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- magnet
- superconducting
- resistor
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- 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)
- Power Engineering (AREA)
- Engineering & Computer Science (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)
- Fertilizers (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Powder Metallurgy (AREA)
- Superconductor Devices And Manufacturing Methods Thereof (AREA)
Abstract
【選択図】図3
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 (8)
- 稼動条件下で稼動量の磁界を発生させる超電導磁石(1)を備え、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た超電導磁石アセンブリであって、
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)をさらに備え、それにより稼動条件下で前記磁石がそのような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。 - 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。
- さらなる超電導故障電流限流器(7a)が前記接続手段(9)と前記磁石(1)との間に直列に配置される、請求項1または2に記載の超電導磁石アセンブリ。
- 前記さらなる超電導故障電流限流器(7a)が前記磁石(1)と、前記故障電流限流器(7)および前記抵抗器(5)の直列組合せとの間に直列に配置され、
前記磁石(1)、前記さらなる超電導故障電流限流器(7a)、前記故障電流限流器(7)、および前記抵抗器(5)が直列閉回路を形成する、
請求項3に記載の超電導磁石アセンブリ。 - 前記さらなる超電導故障電流限流器(7a)が前記接続手段(9)と、
‐前記磁石(1)、
‐前記保護抵抗器(8)、および
‐前記故障電流限流器(7)と前記抵抗器(5)との直列組合せ、
を接続するノードとの間に直列に配置され、
前記電源(4)、前記故障電流限流器(7)と前記抵抗器(5)との直列組合せ、および前記さらなる超電導故障電流限流器(7a)が直列閉回路を形成する、
請求項3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ないし5のいずれか一項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6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7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 |
GB0709875.9 | 2007-05-23 | ||
GB0709875A GB2448197B (en) | 2007-04-02 | 2007-05-23 | Apparatus for stabilising decay in a quasi-persistent superconducting magnet and quench protection |
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 |
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JP2010524219A true JP2010524219A (ja) | 2010-07-15 |
JP5383651B2 JP5383651B2 (ja) | 2014-01-08 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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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) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010147370A (ja) * | 2008-12-22 | 2010-07-01 | Hitachi Ltd | 電磁石装置 |
JP2015535709A (ja) * | 2012-09-27 | 2015-12-17 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | 超電導永久磁石を自動的に停止させるシステム及び方法 |
JP2017076736A (ja) * | 2015-10-16 | 2017-04-20 | 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 |
JP2021511678A (ja) * | 2018-01-30 | 2021-05-06 | トカマク エナジー リミテッド | 極低温システム用監視装置 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US20090103217A1 (en) * | 2007-10-17 | 2009-04-23 | General Electric Company | System and apparatus for limiting current in a superconducting coil |
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 |
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 |
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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2007
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- 2007-05-23 GB GB0709875A patent/GB2448197B/en not_active Expired - Fee Related
-
2008
- 2008-02-29 JP JP2010501596A patent/JP5383651B2/ja active Active
- 2008-02-29 CN CN2008800087421A patent/CN101681711B/zh active Active
- 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 US US12/525,025 patent/US8154830B2/en active Active
- 2008-02-29 AT AT08709662T patent/ATE481720T1/de not_active IP Right Cessation
- 2008-02-29 DE DE602008002569T patent/DE602008002569D1/de active Active
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JP2010147370A (ja) * | 2008-12-22 | 2010-07-01 | Hitachi Ltd | 電磁石装置 |
JP2015535709A (ja) * | 2012-09-27 | 2015-12-17 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | 超電導永久磁石を自動的に停止させるシステム及び方法 |
JP2017076736A (ja) * | 2015-10-16 | 2017-04-20 | 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 |
WO2017065151A1 (ja) * | 2015-10-16 | 2017-04-20 | 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 |
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JP2021511678A (ja) * | 2018-01-30 | 2021-05-06 | トカマク エナジー リミテッド | 極低温システム用監視装置 |
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Also Published As
Publication number | Publication date |
---|---|
GB0709875D0 (en) | 2007-07-04 |
EP2132753A1 (en) | 2009-12-16 |
CN101681711B (zh) | 2013-06-05 |
EP2132753B1 (en) | 2010-09-15 |
CN101681711A (zh) | 2010-03-24 |
ATE481720T1 (de) | 2010-10-15 |
US8154830B2 (en) | 2012-04-10 |
JP5383651B2 (ja) | 2014-01-08 |
GB2448197B (en) | 2009-05-20 |
US20100073115A1 (en) | 2010-03-25 |
WO2008120007A1 (en) | 2008-10-09 |
GB0706399D0 (en) | 2007-05-09 |
DE602008002569D1 (de) | 2010-10-28 |
GB2448197A (en) | 2008-10-08 |
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