JPH055364B2 - - Google Patents
Info
- Publication number
- JPH055364B2 JPH055364B2 JP61216861A JP21686186A JPH055364B2 JP H055364 B2 JPH055364 B2 JP H055364B2 JP 61216861 A JP61216861 A JP 61216861A JP 21686186 A JP21686186 A JP 21686186A JP H055364 B2 JPH055364 B2 JP H055364B2
- Authority
- JP
- Japan
- Prior art keywords
- cooling
- series regulator
- power supply
- supply device
- current
- 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.)
- Expired - Lifetime
Links
- 238000001816 cooling Methods 0.000 claims description 25
- 230000005284 excitation Effects 0.000 description 8
- 230000005347 demagnetization Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Magnetic Resonance Imaging Apparatus (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、核磁気共鳴診断装置や核融合装置、
超電導電力貯蔵装置等で用いられる超電導マグネ
ツト負荷に高精度、高安定の電流を供給する直流
電源装置の冷却方式に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to nuclear magnetic resonance diagnostic devices, nuclear fusion devices,
This invention relates to a cooling method for a DC power supply device that supplies highly accurate and highly stable current to a superconducting magnet load used in a superconducting power storage device or the like.
かかる直流電源装置は、一般に交流電源を直流
に変換するダイオード整流器等と、この整流器か
らの直流出力を高精度、高安定なものにするトラ
ンジスタ等のシリーズレギユレータで構成され
る。
Such a DC power supply device generally includes a diode rectifier or the like that converts AC power into DC, and a series regulator such as a transistor that makes the DC output from the rectifier highly accurate and highly stable.
そして、このシリーズレギユレータには通過電
流と両端電圧の積で決まる損失が発生し、相当な
発熱を伴うので、水冷式の冷却装置で強制冷却す
る必要がある。 This series regulator generates a loss determined by the product of the passing current and the voltage across it, and generates a considerable amount of heat, so it is necessary to forcibly cool it with a water-cooled cooling device.
そして、この冷却装置の冷却水量は最大発生損
失にある余裕をもたせて一定に設計されるのが普
通である。従つて、運転モードによつては過度の
冷却を行なうという欠点があつた。 The amount of cooling water in this cooling device is normally designed to be constant with a certain margin for the maximum loss generated. Therefore, depending on the operating mode, there is a drawback that excessive cooling may be performed.
なお、冷却装置の冷却水量を可調整として個々
の電流、電圧に応じて連続可変の調整をすること
が考えられなくはないが、これは冷却装置の運転
がきわめて複雑なものとなり、面倒なものであ
る。 Although it is possible to continuously adjust the amount of cooling water in the cooling system according to individual currents and voltages, this would make the operation of the cooling system extremely complicated and troublesome. It is.
本発明の目的は前記従来例の不都合を解消し、
簡単でかつ効率的な冷却を行うことができる高精
度直流電源装置の冷却方式を提供することにあ
る。 The purpose of the present invention is to eliminate the disadvantages of the conventional example,
An object of the present invention is to provide a cooling method for a high-precision DC power supply device that can perform simple and efficient cooling.
本発明は前記目的を達成するため、交流電源か
ら整流器を介して直流を得、さらにこれをトラン
ジスタ等のシリーズレギユレータで高精度、高安
定の直流電源をマグネツト負荷に供給する可調整
の定電流電源装置において、シリーズレギユレー
タの冷却装置は前記マグネツト負荷の励磁時より
も減磁時に冷却能力を高める運転をすることを要
旨とするものである。
In order to achieve the above object, the present invention obtains direct current from an alternating current power supply through a rectifier, and further uses a series regulator such as a transistor to supply a highly accurate and highly stable direct current power to a magnetic load. In the current power supply device, the cooling device of the series regulator is operated with a higher cooling capacity when the magnetic load is demagnetized than when it is excited.
本発明によれば、励磁時よりも減磁時の発生損
失が装置の運転特性から大きくなることに着目
し、発生損失が大きい時にのみ冷却装置の能力を
高めることで、励磁運転と減磁運転のいずれにお
いても同一な安定性が得られる。
According to the present invention, by focusing on the fact that the loss generated during demagnetization is larger than that during excitation due to the operating characteristics of the device, and by increasing the capacity of the cooling device only when the loss generated is large, The same stability can be obtained in either case.
以下、図面について本発明の実施例を詳細に説
明する。
Embodiments of the present invention will be described in detail below with reference to the drawings.
第１図は本発明の冷却方式の実施例を示す回路
説明図で、図中１は交流電源に接続される絶縁変
圧器、２はダイオード整流器、３は直流平滑フイ
ルタ、４はトランジスタシリーズレギユレータ、
６はマグネツト負荷を示す。 FIG. 1 is a circuit explanatory diagram showing an embodiment of the cooling method of the present invention, in which 1 is an isolation transformer connected to an AC power supply, 2 is a diode rectifier, 3 is a DC smoothing filter, and 4 is a transistor series regulator. rater,
6 indicates the magnetic load.
交流電源からダイオード整流器２を介して得ら
れた直流は、シリーズレギユレータ４により所望
の電流パターンにより可変調整され、マグネツト
負荷６に高精度の電流として供給される。 A direct current obtained from an alternating current power source via a diode rectifier 2 is variably adjusted by a series regulator 4 according to a desired current pattern, and is supplied to a magnetic load 6 as a highly accurate current.
そして、負荷６のマグネツトに所望のパターン
の電流を安定よく高精度で供給するために、出力
段のシリーズレギユレータ４は水冷式等の冷却装
置５で強制冷却される。 In order to stably and accurately supply a desired pattern of current to the magnet of the load 6, the output stage series regulator 4 is forcibly cooled by a cooling device 5 such as a water cooling type.
第２図はシリーズレギユレータ４の部分の等価
回路図、第３図は同上動作波形図で、これからも
知見できるように、励磁と減磁の運転状態ではそ
の発生損失が異なり、減磁時の方が大きくなる。 Figure 2 is an equivalent circuit diagram of the series regulator 4 part, and Figure 3 is an operating waveform diagram of the same as above.As can be seen from this, the generated loss is different in the excitation and demagnetization operating states, and when demagnetized becomes larger.
第２図から、Ｖ＝ED−VM VM＞０：励磁時
VM＜０：減磁時
であり、シリーズレギユレータ４に加わる電圧は
減磁時にマグネツトが発生する電圧VMが、直流
電圧EDに加算になり、励磁時よりも大きくなる。
このため通過する電流は双方運転でも同じである
ことから発生損失が大きくなる。本発明はこのよ
うな状況を鑑みて、励磁時よりも減磁時の冷却装
置の運転を強めて、冷却能力を高めるようにし
た。 From Figure 2, V=ED−VM VM>0: Excitation
VM<0: During demagnetization, the voltage applied to the series regulator 4 is greater than that during excitation because the voltage VM generated by the magnet during demagnetization is added to the DC voltage ED.
For this reason, the current passing through is the same in both operations, resulting in a large loss. In view of this situation, the present invention increases the cooling capacity by increasing the operation of the cooling device during demagnetization rather than during excitation.
具体的には、冷却水の送水ポンプを高速運転
し、冷水量を増加させることが考えられる。 Specifically, it is possible to increase the amount of cold water by operating the cooling water pump at high speed.
以上述べたように本発明の直流電源装置の冷却
方式は、交流電源から整流器を介して直流を得、
さらにこれをトランジスタ等のシリーズレギユレ
ータで高精度、高安定の直流電源をマグネツト負
荷に供給する可調整の定電流電源装置において、
減磁運転状態における冷却能力を高めたので、励
磁時と同等の高精度、高安定の電流供給を行うこ
とができ、その結果励磁時にはむだの少ない効率
のよい冷却運転とすることができるものである。
As described above, the cooling method of the DC power supply device of the present invention obtains DC from an AC power supply through a rectifier,
Furthermore, this is used in an adjustable constant current power supply device that uses a series regulator such as a transistor to supply highly accurate and highly stable DC power to the magnetic load.
By increasing the cooling capacity during demagnetization operation, it is possible to supply current with the same precision and stability as during excitation, resulting in efficient cooling operation with less waste during excitation. be.
また、これにより励磁と減磁の運転モードにお
いても安定性のよい冷却運転を実現することが可
能となる。 Moreover, this makes it possible to realize stable cooling operation even in the excitation and demagnetization operation modes.
第１図は発明の直流電源装置の冷却方式の実施
例を示す回路説明図、第２図はシリーズレギユレ
ータ部分の等価回路図、第３図は同上動作波形図
である。
１……絶縁変圧器、２……ダイオード整流器、
３……直流平滑フイルタ、４……トランジスタシ
リーズレギユレータ、５……冷却装置、６……マ
グネツト負荷。
FIG. 1 is an explanatory circuit diagram showing an embodiment of the cooling system of the DC power supply device of the invention, FIG. 2 is an equivalent circuit diagram of the series regulator portion, and FIG. 3 is an operational waveform diagram of the same. 1...Isolation transformer, 2...Diode rectifier,
3...DC smoothing filter, 4...Transistor series regulator, 5...Cooling device, 6...Magnetic load.
Claims (1)
にこれをトランジスタ等のシリーズレギユレータ
で高精度、高安定の直流電流をマグネツト負荷に
供給する可調整の定電流電源装置において、シリ
ーズレギユレータの冷却装置は前記マグネツト負
荷の励磁時よりも減磁時に冷却能力を高める運転
をすることを特徴とする直流電源装置の冷却方
式。1. In an adjustable constant current power supply device, which obtains direct current from an alternating current power source through a rectifier, and then supplies this highly accurate and highly stable direct current to a magnetic load using a series regulator such as a transistor, the series regulator A cooling system for a DC power supply device, characterized in that the cooling device operates with a higher cooling capacity when the magnetic load is demagnetized than when it is energized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61216861A JPS6372103A (en) | 1986-09-12 | 1986-09-12 | Cooling system for dc power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61216861A JPS6372103A (en) | 1986-09-12 | 1986-09-12 | Cooling system for dc power source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6372103A JPS6372103A (en) | 1988-04-01 |
| JPH055364B2 true JPH055364B2 (en) | 1993-01-22 |
Family
ID=16695054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61216861A Granted JPS6372103A (en) | 1986-09-12 | 1986-09-12 | Cooling system for dc power source |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6372103A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109062303B (en) * | 2018-05-02 | 2020-07-14 | 华中科技大学 | High-stability flat-top pulse high-intensity magnetic field generating device and control method |
-
1986
- 1986-09-12 JP JP61216861A patent/JPS6372103A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6372103A (en) | 1988-04-01 |
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