JPS61115308A - Superconducting device - Google Patents
Superconducting deviceInfo
- Publication number
- JPS61115308A JPS61115308A JP59236704A JP23670484A JPS61115308A JP S61115308 A JPS61115308 A JP S61115308A JP 59236704 A JP59236704 A JP 59236704A JP 23670484 A JP23670484 A JP 23670484A JP S61115308 A JPS61115308 A JP S61115308A
- Authority
- JP
- Japan
- Prior art keywords
- persistent current
- current switch
- superconducting
- semiconductor element
- coil
- 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
Links
Classifications
-
- 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
Abstract
Description
【発明の詳細な説明】
［発明の技術分野〕
この発明は、永久電流モードで運転中の超電導コイルの
保護回路を備えた超電導装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a superconducting device equipped with a protection circuit for a superconducting coil operating in persistent current mode.
従来のダイオードを用いた永久電流スイッチの保護回路
を第３図に示す。第３図で、超電導コイルｌおよび２を
永久電流スイッチ３を用いて永久電流で運転するとき、
外部からの熱侵入を小さくするためｌζ励磁電源４を極
低温領域５から切り離すことができる。この永久電流状
態で運転中に永久電流スイッチ３がクエンチすると、ダ
イオード６に電流が流れて電力を消費し、永久電流スイ
ッチ３の両端電圧は低く保たれるので永久電流スイッチ
３を保護することができる。しかし、永久電流状態から
超電導コイル１または２がクエンチすると、永久電流ス
イッチ３の両端電圧は０であるので、ダイオード６には
電流が流れず、全蓄積エネルギーはクエンチしたコイル
１または２で消費されることＩこなる。超電導コイル１
ｔたは２のりエンチ伝播の速さが遅いと、ジュール発熱
が局所的に起こるのでコイルを焼損してしまう恐れがあ
る。A conventional protection circuit for a persistent current switch using a diode is shown in FIG. In FIG. 3, when superconducting coils l and 2 are operated with persistent current using persistent current switch 3,
In order to reduce heat intrusion from the outside, the lζ excitation power source 4 can be separated from the cryogenic region 5. If the persistent current switch 3 quenches during operation in this persistent current state, current flows through the diode 6 and consumes power, and the voltage across the persistent current switch 3 is kept low, making it possible to protect the persistent current switch 3. can. However, when the superconducting coil 1 or 2 quenches from the persistent current state, the voltage across the persistent current switch 3 is 0, so no current flows through the diode 6, and the entire stored energy is consumed by the quenched coil 1 or 2. That's what I'm talking about. Superconducting coil 1
If the propagation speed of t or 2 is slow, Joule heat generation will occur locally and there is a risk of burning out the coil.
この発明は上述した従来装置の欠点を改良したもので１
、永久電流スイッチがクエンチしたときにも超電導コイ
ルがクエンチしたときにも連携して各構成要素を保護す
る保護回路を有する超電導装置を提供することを目的と
する。This invention improves the drawbacks of the conventional device described above.
It is an object of the present invention to provide a superconducting device having a protection circuit that cooperates to protect each component even when a persistent current switch is quenched and when a superconducting coil is quenched.
［発明の概要〕
各超電導コイルまたはコイルからの口出し線により分割
されたコイル部分憂こ、永久電流スイッチ用保護素子と
は逆向きＥこ保護用半導体素子を接続し、この半導体素
子を流れる電流を永久電流スイッチのヒーターに流すよ
うＩζする。[Summary of the invention] A protective semiconductor element is connected to each superconducting coil or a coil section divided by a lead wire from the coil in a direction opposite to that of a protective element for a persistent current switch, and the current flowing through this semiconductor element is connected. Iζ so that it flows to the heater of the persistent current switch.
〔発明の効果〕
この発明を実施すること（こより、永久電流で運転中の
超電導コイルのいずれか１つがクエンチしたときに、複
数個の保護用半導体素子が連携して保護動作をするので
構成要素を確実１こ保護することができる。また、エネ
ルギーを消費する半導体素子の数が多いので、保護用半
導体素子が焼損する恐れも少なくなる。[Effect of the invention] By carrying out this invention (from this, when any one of the superconducting coils operating with persistent current quenches, a plurality of protective semiconductor elements cooperate to perform a protective operation, Furthermore, since there are a large number of semiconductor elements that consume energy, there is less risk that the protective semiconductor elements will be burnt out.
この発明の実施例を第１図および第２図Ｉこ示す。 An embodiment of the invention is shown in FIGS. 1 and 2I.
第１図で、超電導コイル１．２および永久電流スイッチ
３に永久電流が流れているとする。この状態で超電導コ
イル１がクエンチしたとすると、保護用半導体素子７に
順電圧がかかりこれＥζ電源が流れる。このとき永久電
流スイッチ３のヒーター８にも電流が流れるので永久電
流スイッチ３もクエンチする。このため永久電流スイッ
チ３の両端１こも電圧が生じるので保護用半導体素子６
にも電流が流れる。超電導コイル１のクエンチが超電導
コイル２Ｉζ伝わらないとしても、超電導コイル１およ
び２の蓄積エネルギーは、超電導コイル１、保護用半導
体素子７および６で消費される′）″：・ １各構成
要素は確実に保護される。永久電流状態で ”超電導
コイル２がクエンチしたときにも同様に保護用半導体素
子９および６に電流が流れて、各構成要素を保護する。In FIG. 1, it is assumed that a persistent current is flowing through the superconducting coil 1.2 and the persistent current switch 3. If the superconducting coil 1 is quenched in this state, a forward voltage is applied to the protective semiconductor element 7, which causes the Eζ power to flow. At this time, since current also flows through the heater 8 of the persistent current switch 3, the persistent current switch 3 is also quenched. For this reason, a voltage is generated at both ends of the persistent current switch 3, so the protective semiconductor element 6
Current also flows through the Even if the quench of superconducting coil 1 is not transmitted to superconducting coil 2Iζ, the energy stored in superconducting coils 1 and 2 is consumed in superconducting coil 1 and protective semiconductor elements 7 and 6')'':・1 Each component is reliable. When the superconducting coil 2 quenches in a persistent current state, current similarly flows through the protective semiconductor elements 9 and 6 to protect each component.
第２図は、永久電流スイッチ３のヒーターの数を減らす
ようｌζしたもので、保護動作の原理は第１図と全く同
じである。In FIG. 2, the number of heaters in the persistent current switch 3 is reduced, and the principle of protection operation is exactly the same as in FIG. 1.
第１図および第２図の実施例はさまざまな変形が可能で
あり、例えば、半導体素子７，９、および６を、それぞ
れ複数個直列した半導体素子Ｉこ置き換えたもの、半導
体素子と放熱用抵抗を直列接続したものｌこ置きかえた
もの、なども本発明の実施例となる。The embodiments shown in FIGS. 1 and 2 can be modified in various ways, such as replacing semiconductor elements 7, 9, and 6 with a plurality of semiconductor elements I connected in series, semiconductor elements and heat dissipation resistors, etc. Examples of the present invention include connecting the two in series, replacing one with the other, and so on.
第１図および第２図は本発明の実施例を示す回路図、第
３図は、従来の保護回路を含む超電導装置の回路図であ
る。
１．２・・・超電導コイル
３ ・・・永久電流スイッチ
４ ・・・励磁用電源
５ ・二極低温領域1 and 2 are circuit diagrams showing an embodiment of the present invention, and FIG. 3 is a circuit diagram of a superconducting device including a conventional protection circuit. 1.2...Superconducting coil 3...Persistent current switch 4...Excitation power supply 5 ・Double low temperature region
Claims (3)
超電導コイルまたは巻線の中間部１か所以上から口出し
線をとり出した単一の超電導コイルとを備えた超電導装
置において、各超電導コイルあるいは口出し線により分
割されたコイル部分に並列に接続された液体ヘリウム中
などの低温中にある保護用の半導体素子の接続線を、永
久電流スイッチのヒーターとして巻き、回路の保護時に
半導体素子に流れる電流によって、永久電流スイッチを
強制的にクエンチさせるようにした保護回路を備えたこ
とを特徴とする超電導装置。(1) In a superconducting device equipped with a persistent current switch and a plurality of superconducting coils connected in series or a single superconducting coil with a lead wire taken out from one or more intermediate parts of the windings, each superconducting A connecting wire for a semiconductor element for protection in a low-temperature environment such as in liquid helium, which is connected in parallel to a coil or a coil section divided by lead wires, is wound as a heater for a persistent current switch, and is used to protect the semiconductor element when protecting a circuit. A superconducting device characterized by comprising a protection circuit that forcibly quenches a persistent current switch by a flowing current.
ことを特徴とする特許請求の範囲第１項記載の超電導装
置。(2) The superconducting device according to claim 1, wherein the semiconductor element is a diode or a thyristor.
特許請求の範囲第１項記載の超電導装置。(3) The superconducting device according to claim 1, wherein the semiconductor element is a thyristor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59236704A JPS61115308A (en) | 1984-11-12 | 1984-11-12 | Superconducting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59236704A JPS61115308A (en) | 1984-11-12 | 1984-11-12 | Superconducting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61115308A true JPS61115308A (en) | 1986-06-02 |
Family
ID=17004525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59236704A Pending JPS61115308A (en) | 1984-11-12 | 1984-11-12 | Superconducting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61115308A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990003038A1 (en) * | 1988-09-08 | 1990-03-22 | Mitsubishi Denki Kabushiki Kaisha | Superconductive magnet device |
| EP0489291A2 (en) * | 1990-12-03 | 1992-06-10 | Westinghouse Electric Corporation | Superconducting magnet system with inductive quench heaters |
| JP2006265839A (en) * | 2005-03-22 | 2006-10-05 | Hideki Tanuma | Sound insulating panel for installing outdoor ceiling and building such as apartment house for installing this panel |
| JP2006352146A (en) * | 2006-07-10 | 2006-12-28 | Toshiba Corp | Superconductive magnet and its protection circuit |
| JP2007291804A (en) * | 2006-04-27 | 2007-11-08 | Toda Constr Co Ltd | Sound absorbing structure and sound absorbing diffusion member |
| JP2010147370A (en) * | 2008-12-22 | 2010-07-01 | Hitachi Ltd | Electromagnet device |
-
1984
- 1984-11-12 JP JP59236704A patent/JPS61115308A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990003038A1 (en) * | 1988-09-08 | 1990-03-22 | Mitsubishi Denki Kabushiki Kaisha | Superconductive magnet device |
| GB2229862A (en) * | 1988-09-08 | 1990-10-03 | Mitsubishi Electric Corp | Superconductive magnet device |
| GB2229862B (en) * | 1988-09-08 | 1993-04-14 | Mitsubishi Electric Corp | Superconducting magnet device |
| US5216568A (en) * | 1988-09-08 | 1993-06-01 | Mitsubishi Denki Kabushiki Kaisha | Superconducting magnet device |
| EP0489291A2 (en) * | 1990-12-03 | 1992-06-10 | Westinghouse Electric Corporation | Superconducting magnet system with inductive quench heaters |
| JP2006265839A (en) * | 2005-03-22 | 2006-10-05 | Hideki Tanuma | Sound insulating panel for installing outdoor ceiling and building such as apartment house for installing this panel |
| JP2007291804A (en) * | 2006-04-27 | 2007-11-08 | Toda Constr Co Ltd | Sound absorbing structure and sound absorbing diffusion member |
| JP2006352146A (en) * | 2006-07-10 | 2006-12-28 | Toshiba Corp | Superconductive magnet and its protection circuit |
| JP4568253B2 (en) * | 2006-07-10 | 2010-10-27 | 株式会社東芝 | Superconducting magnet protection circuit |
| JP2010147370A (en) * | 2008-12-22 | 2010-07-01 | Hitachi Ltd | Electromagnet device |
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