JPH06303759A - Rotor of superconducting rotary electric machine - Google Patents
Rotor of superconducting rotary electric machineInfo
- Publication number
- JPH06303759A JPH06303759A JP5084618A JP8461893A JPH06303759A JP H06303759 A JPH06303759 A JP H06303759A JP 5084618 A JP5084618 A JP 5084618A JP 8461893 A JP8461893 A JP 8461893A JP H06303759 A JPH06303759 A JP H06303759A
- Authority
- JP
- Japan
- Prior art keywords
- superconducting
- rotor
- field winding
- electric machine
- heat radiation
- 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
-
- 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
Landscapes
- Superconductive Dynamoelectric Machines (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は超電導回転電機の回転子
において、特に熱輻射シールドの構造を改良した超電導
回転電機の回転子に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotor of a superconducting rotating electric machine, and more particularly to a rotor of a superconducting rotating electric machine having an improved heat radiation shield structure.
【０００２】[0002]
【従来の技術】最近、超電導線を回転界磁巻線として利
用した所謂超電導回転子を備えた回転電機、例えば発電
機が開発されている。超電導線を用いた界磁巻線は、そ
の超電導性を維持するために、４ｋ程度の極低温に冷却
しなければならず、そのため冷却媒体として液体ヘリウ
ムを用いている。2. Description of the Related Art Recently, there has been developed a rotating electric machine, for example, a generator equipped with a so-called superconducting rotor that utilizes a superconducting wire as a rotating field winding. A field winding using a superconducting wire must be cooled to a cryogenic temperature of about 4k in order to maintain its superconducting property, and therefore liquid helium is used as a cooling medium.
【０００３】超電導発電機においては、励磁制御を行わ
なくても十分高い安定度が得られるが、近年では励磁制
御を行い界磁巻線の発生する磁束を素早く変化させ、電
機子巻線との磁気的結合の強さを制御することにより、
この利点をさらに拡大しようとする試みがなされてい
る。In a superconducting generator, a sufficiently high degree of stability can be obtained without performing excitation control. In recent years, however, the excitation control is performed to quickly change the magnetic flux generated by the field winding, and the By controlling the strength of the magnetic coupling,
Attempts have been made to extend this advantage even further.
【０００４】図４は、従来の励磁制御を行う超電導発電
機の中央部の断面図を示すものである。同図に示すよう
に超電導界磁巻線１は、高強度非磁性鋼からなる界磁巻
線取付軸２に強固に固定され、界磁巻線取付軸２内の冷
媒貯蔵部に収容された液体ヘリウム３により冷却され
る。この界磁巻線１の外周部には液体ヘリウム容器を構
成するヘリウムベッセル４、周方向が複数に仕切られた
中空部を有する輻射侵入熱を低減する熱輻射シールド
５、真空容器を構成する常温ダンパ６がそれぞれ同心円
状に配設されている。FIG. 4 is a cross-sectional view of a central portion of a conventional superconducting generator for controlling excitation. As shown in the figure, the superconducting field winding 1 is firmly fixed to the field winding mounting shaft 2 made of high-strength non-magnetic steel, and is housed in the refrigerant storage portion in the field winding mounting shaft 2. It is cooled by liquid helium 3. A helium vessel 4 constituting a liquid helium container is provided on the outer peripheral portion of the field winding 1, a heat radiation shield 5 having a hollow portion partitioned in a plurality of circumferential directions to reduce radiant heat, and a room temperature constituting a vacuum container. The dampers 6 are arranged concentrically.
【０００５】[0005]
【発明が解決しようとする課題】このような構成の超電
導回転電機の回転子において、熱輻射シールド５は励磁
制御に伴う渦電流の発生を低減し、界磁磁束の変化を素
早く電機子巻線に伝えるようにするため、高抵抗材が用
いられ、また中空部内に冷却ガスを供給するガス強制冷
却形の構成を採用している。In the rotor of the superconducting rotary electric machine having such a structure, the heat radiation shield 5 reduces the generation of eddy currents due to the excitation control, and changes the field magnetic flux quickly. A high resistance material is used and a gas forced cooling type configuration for supplying a cooling gas into the hollow portion is adopted.
【０００６】しかし、このような構成の回転子では、熱
輻射シールド５が中空構造となっているため、発電機事
故時に加わる電磁力に対する強度が低くなり、また径方
向の寸法の増大により回転子径の寸法が大きくなり、信
頼性が低下するという問題があった。However, in the rotor having such a structure, since the heat radiation shield 5 has a hollow structure, the strength against the electromagnetic force applied at the time of a generator accident is lowered, and the rotor is increased due to an increase in radial dimension. There is a problem that the diameter becomes large and the reliability is lowered.
【０００７】本発明は上記のような問題を解消するため
になされたもので、電磁力に対する強度が高く、しかも
径方向の寸法が小さく、且つ渦電流発生を低減できる熱
輻射シールドを配設することにより、回転子径を小さく
できる信頼性の高い励磁制御可能な超電導回転電機の回
転子を提供することを目的とする。The present invention has been made in order to solve the above problems, and is provided with a heat radiation shield which has high strength against electromagnetic force, has a small radial dimension, and can reduce eddy current generation. Thus, it is an object of the present invention to provide a rotor of a superconducting rotating electric machine that can reduce the rotor diameter and have a highly reliable excitation control.
【０００８】[0008]
【課題を解決するための手段】本発明は上記目的を達成
するため、内部に冷媒貯蔵部を有する巻線取付軸に超電
導界磁巻線を巻装し、この超電導界磁巻線を前記冷媒貯
蔵部に貯蔵された冷媒液により冷却するようにした超電
導回転電機の回転子において、高抵抗支持円筒の外周又
は内周に適宜の間隔を存して軸方向に伸びる複数の溝を
設け、これら各溝に良導電性材からなるバーをそれぞれ
収納して構成した熱輻射シールドを前記超電導界磁巻線
の外周部に配設して極低温部への輻射による侵入熱を低
減するようにしたものである。In order to achieve the above object, the present invention has a superconducting field winding wound around a winding mounting shaft having a refrigerant storage portion therein, and the superconducting field winding is used as the refrigerant. In a rotor of a superconducting rotating electric machine configured to be cooled by a refrigerant liquid stored in a storage unit, a plurality of grooves extending in the axial direction at appropriate intervals are provided on the outer circumference or the inner circumference of a high resistance supporting cylinder, A heat radiation shield constituted by accommodating a bar made of a highly conductive material in each groove is arranged on the outer peripheral portion of the superconducting field winding so as to reduce heat entering the cryogenic portion due to radiation. It is a thing.
【０００９】また、内部に冷媒貯蔵部を有する巻線取付
軸に超電導界磁巻線を巻装し、この超電導界磁巻線を前
記冷媒貯蔵部に貯蔵された冷媒液により冷却するように
した超電導回転電機の回転子において、高抵抗支持円筒
の外周部に良導電性材からなる導電層を形成し、この導
電層に周方向に適宜の間隔を存して軸方向に伸びる複数
のスリット加工を施して構成した熱輻射シールドを前記
超電導界磁巻線の外周部に配設して極低温部への輻射に
よる侵入熱を低減するようにしたものである。Further, a superconducting field winding is wound around a winding mounting shaft having a refrigerant storing section therein, and the superconducting field winding is cooled by the refrigerant liquid stored in the refrigerant storing section. In the rotor of a superconducting rotating electric machine, a conductive layer made of a good conductive material is formed on the outer peripheral portion of a high resistance supporting cylinder, and a plurality of slits are formed in this conductive layer that extend in the axial direction at appropriate intervals in the circumferential direction. The heat radiation shield configured by applying the above is arranged on the outer peripheral portion of the superconducting field winding so as to reduce the invasion heat due to radiation to the cryogenic portion.
【００１０】[0010]
【作用】このような構成の超電導回転電機の回転子とす
れば、輻射による侵入熱は良導電性材料からなるバー又
は導電層を回転機軸方向に伝搬し、熱輻射シールド端部
の取付軸から放出される。また、電磁的なダンパーと異
なり、シールド周方向に電気的に良好に接続する部分が
ないため、変動磁界に対して渦電流発生を減少させるこ
とができる。With the rotor of the superconducting rotating electric machine having such a structure, the invasion heat due to the radiation propagates through the bar or the conductive layer made of a highly conductive material in the axial direction of the rotating machine, and from the mounting shaft at the end of the heat radiation shield. Is released. Further, unlike an electromagnetic damper, since there is no portion that is electrically well connected in the circumferential direction of the shield, it is possible to reduce eddy current generation with respect to a fluctuating magnetic field.
【００１１】[0011]
【実施例】以下本発明の実施例を図面を参照して説明す
る。図１は超電導発電機の回転子の第１の実施例を示す
断面図である。なお、従来例の図４と同一部分には同一
符号を付してその説明を省略し、ここでは異なる点につ
いて述べる。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing a first embodiment of a rotor of a superconducting generator. The same parts as those in FIG. 4 of the conventional example are designated by the same reference numerals, and the description thereof will be omitted. Here, different points will be described.
【００１２】第１の実施例では、図１に示すように超電
導界磁巻線１の外周部に設けられたヘリウムベッセル４
の外周部に配設される熱輻射シールド７として、高抵抗
支持円筒８の外周面に複数の軸方向に伸びる溝を形成
し、これら各溝に良導電性材からなるバー９をそれそぞ
れ収納して構成したものである。In the first embodiment, as shown in FIG. 1, the helium vessel 4 provided on the outer peripheral portion of the superconducting field winding 1.
As a heat radiation shield 7 arranged on the outer peripheral portion of the high resistance supporting cylinder 8, a plurality of grooves extending in the axial direction are formed on the outer peripheral surface of the high resistance supporting cylinder 8, and bars 9 made of a good conductive material are provided in each of the grooves. It is stored and configured.
【００１３】このような構成の超電導発電機の回転子に
よれば、輻射による侵入熱は良導電性材からなるバー９
を通して発電機軸方向に伝搬し、熱輻射シールド７の軸
端の取付部から放出される。According to the rotor of the superconducting generator having such a structure, the intrusion heat due to the radiation causes the bar 9 made of a highly conductive material.
Propagating in the axial direction of the generator, and is emitted from the mounting portion at the shaft end of the heat radiation shield 7.
【００１４】また、熱輻射シールド７の周方向は各バー
相互間は電気的に絶縁されているので、変動磁界に対し
て渦電流の発生が小さく、励磁制御時の界磁磁束の変化
が素早く電機子巻線に伝えることができる。Further, since the bars of the heat radiation shield 7 are electrically insulated from each other in the circumferential direction, the generation of eddy current is small with respect to the fluctuating magnetic field, and the change of the field magnetic flux during the excitation control is quick. Can be transmitted to the armature winding.
【００１５】さらに、熱輻射シールド７は高抵抗支持円
筒８とその外周面の溝に収納されるバー９で構成された
中実構造となるため、発電機事故時に加わる電磁力に対
する強度が高くなり、また径方向の寸法も減少するの
で、発電機回転子径を小さくでき、信頼性の向上を図り
得る。Further, since the heat radiation shield 7 has a solid structure composed of the high resistance support cylinder 8 and the bar 9 housed in the groove on the outer peripheral surface thereof, the strength against the electromagnetic force applied at the time of generator accident is increased. Moreover, since the radial dimension is also reduced, the generator rotor diameter can be reduced, and the reliability can be improved.
【００１６】なお、上記第１の実施例では、高抵抗支持
円筒８の外周面に形成された複数の溝に良導電性材から
なるバー９をそれそぞれ収納して熱輻射シールド７を構
成したが、図２に示すように高抵抗支持円筒８の内周面
に複数の軸方向に伸びる溝を形成し、これら各溝に良導
電性材からなるバー９をそれぞれ収納して熱輻射シール
ド７を構成しても、前述同様の作用効果を得ることがで
きる。In the first embodiment described above, the heat radiation shield 7 is accommodated by accommodating the bars 9 made of a good conductive material in a plurality of grooves formed on the outer peripheral surface of the high resistance supporting cylinder 8 respectively. As shown in FIG. 2, a plurality of grooves extending in the axial direction are formed on the inner peripheral surface of the high resistance support cylinder 8, and the bars 9 made of a good conductive material are housed in each of these grooves to radiate heat. Even if the shield 7 is configured, the same operational effect as described above can be obtained.
【００１７】次に図３を参照して本発明の第２の実施例
を説明するに、図４と同一部分には同一符号を付してそ
の説明を省略し、ここでは異なる点について述べる。第
２の実施例では、図３に示すように超電導界磁巻線１の
外周部に設けられたヘリウムベッセル４の外周部に配設
される熱輻射シールド１０として、高抵抗支持円筒１１
の外周面に良導電性材により導電層１２を熱拡散法や爆
着により形成し、さらにこの導電層１２に周方向に適宜
の間隔を存して軸方向に伸びる複数本のスリット１３を
それぞれ設け、周方向に対して電気的に絶縁する構成と
したものである。In order to explain the second embodiment of the present invention with reference to FIG. 3, the same parts as those in FIG. 4 are designated by the same reference numerals, and the description thereof will be omitted. Here, only different points will be described. In the second embodiment, as shown in FIG. 3, a high resistance support cylinder 11 is used as the heat radiation shield 10 arranged on the outer peripheral portion of the helium vessel 4 provided on the outer peripheral portion of the superconducting field winding 1.
A conductive layer 12 made of a good conductive material is formed on the outer peripheral surface of the conductive layer 12 by a thermal diffusion method or explosive deposition, and a plurality of slits 13 extending in the axial direction at appropriate intervals in the circumferential direction are formed on the conductive layer 12. It is provided and electrically insulated in the circumferential direction.
【００１８】このような構成の超電導発電機の回転子と
しても、輻射による侵入熱は良導電性材からなる導電層
１２を通して発電機軸方向に伝搬し、熱輻射シールド１
０の軸端の取付部から放出される。Even in the rotor of the superconducting generator having such a structure, the invasion heat due to the radiation propagates in the axial direction of the generator through the conductive layer 12 made of a highly conductive material, and the heat radiation shield 1
It is discharged from the attachment part at the shaft end of 0.
【００１９】また、熱輻射シールド１０の周方向に対し
ては導電層１２に設けられた複数本のスリット１３によ
り電気的に絶縁されるので、変動磁界に対して渦電流の
発生が小さく、励磁制御時の界磁磁束の変化が素早く電
機子巻線に伝えることができる。Further, since the plurality of slits 13 provided in the conductive layer 12 are electrically insulated in the circumferential direction of the heat radiation shield 10, the generation of eddy current is small with respect to the fluctuating magnetic field, and the excitation is suppressed. Changes in the field magnetic flux during control can be quickly transmitted to the armature winding.
【００２０】さらに、熱輻射シールド７は高抵抗支持円
筒８とその外周面に形成された導電層１２で構成された
中実構造となるため、発電機事故時に加わる電磁力に対
する強度が高くなり、また径方向の寸法も減少するの
で、発電機回転子径を小さくでき、信頼性の向上を図り
得る。Further, since the heat radiation shield 7 has a solid structure composed of the high resistance support cylinder 8 and the conductive layer 12 formed on the outer peripheral surface thereof, the strength against the electromagnetic force applied at the time of a generator accident increases, Moreover, since the radial dimension is also reduced, the generator rotor diameter can be reduced, and the reliability can be improved.
【００２１】[0021]
【発明の効果】以上述べたように本発明によれば、電磁
力に対する強度が高く、しかも半径方向の寸法が小さ
く、且つ渦電流発生を低減できる熱輻射シールドを配設
するようにしたので、回転子径を小さくすることができ
る信頼性の高い励磁制御可能な超電導回転電機の回転子
を提供できる。As described above, according to the present invention, the heat radiation shield having high strength against electromagnetic force, small radial size, and capable of reducing eddy current generation is provided. It is possible to provide a rotor of a superconducting rotating electric machine that can reduce the rotor diameter and has a highly reliable excitation control.
【図１】本発明による超電導回転電機の回転子の第１の
実施例を示す断面図。FIG. 1 is a sectional view showing a first embodiment of a rotor of a superconducting rotary electric machine according to the present invention.
【図２】第１の実施例の変形を示す断面図。FIG. 2 is a sectional view showing a modification of the first embodiment.
【図３】本発明による超電導回転電機の回転子の第２の
実施例を示す断面図。FIG. 3 is a sectional view showing a second embodiment of the rotor of the superconducting rotary electric machine according to the present invention.
【図４】従来の超電導回転電機の回転子の構成例を示す
断面図。FIG. 4 is a sectional view showing a configuration example of a rotor of a conventional superconducting rotating electric machine.
１……超電導界磁巻線、２……界磁巻線取付軸、３……
液体ヘリウム、４……ヘリウムベッセル、６……常温ダ
ンパ、７，１０……熱輻射シールド、８，１１……高抵
抗支持円筒、９……バー、１２……導電層、１３……ス
リット。1 ... Superconducting field winding, 2 ... Field winding mounting axis, 3 ...
Liquid helium, 4 ... Helium vessel, 6 ... Room temperature damper, 7, 10 ... Heat radiation shield, 8, 11 ... High resistance support cylinder, 9 ... Bar, 12 ... Conductive layer, 13 ... Slit.
Claims (2)
超電導界磁巻線を巻装し、この超電導界磁巻線を前記冷
媒貯蔵部に貯蔵された冷媒液により冷却するようにした
超電導回転電機の回転子において、高抵抗支持円筒の外
周又は内周に適宜の間隔を存して軸方向に伸びる複数の
溝を設け、これら各溝に良導電性材からなるバーをそれ
ぞれ収納して構成した熱輻射シールドを前記超電導界磁
巻線の外周部に配設して極低温部への輻射による侵入熱
を低減するようにしたことを特徴とする超電導回転電機
の回転子。1. A superconducting field winding is wound around a winding mounting shaft having a refrigerant storing section therein, and the superconducting field winding is cooled by a refrigerant liquid stored in the refrigerant storing section. In the rotor of a superconducting rotating electric machine, a plurality of grooves extending in the axial direction are provided at appropriate intervals on the outer or inner circumference of a high-resistance supporting cylinder, and a bar made of a good conductive material is housed in each of these grooves. A rotor for a superconducting electric rotating machine, characterized in that the heat radiation shield configured as described above is disposed on the outer peripheral portion of the superconducting field winding to reduce the heat entering the cryogenic portion due to radiation.
超電導界磁巻線を巻装し、この超電導界磁巻線を前記冷
媒貯蔵部に貯蔵された冷媒液により冷却するようにした
超電導回転電機の回転子において、高抵抗支持円筒の外
周部に良導電性材からなる導電層を形成し、この導電層
に周方向に適宜の間隔を存して軸方向に伸びる複数のス
リット加工を施して構成した熱輻射シールドを前記超電
導界磁巻線の外周部に配設して極低温部への輻射による
侵入熱を低減するようにしたことを特徴とする超電導回
転電機の回転子。2. A superconducting field winding is wound around a winding mounting shaft having a refrigerant storing section therein, and the superconducting field winding is cooled by the refrigerant liquid stored in the refrigerant storing section. In the rotor of a superconducting rotating electric machine, a conductive layer made of a good conductive material is formed on the outer peripheral portion of a high resistance supporting cylinder, and a plurality of slits are formed in this conductive layer that extend in the axial direction at appropriate intervals in the circumferential direction. A rotor for a superconducting rotating electric machine, characterized in that a heat radiation shield configured by applying the above is arranged on an outer peripheral portion of the superconducting field winding so as to reduce invasion heat due to radiation to a cryogenic portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5084618A JPH06303759A (en) | 1993-04-12 | 1993-04-12 | Rotor of superconducting rotary electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5084618A JPH06303759A (en) | 1993-04-12 | 1993-04-12 | Rotor of superconducting rotary electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06303759A true JPH06303759A (en) | 1994-10-28 |
Family
ID=13835683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5084618A Pending JPH06303759A (en) | 1993-04-12 | 1993-04-12 | Rotor of superconducting rotary electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06303759A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115910571A (en) * | 2023-02-16 | 2023-04-04 | 江苏旭变变压器有限公司 | Energy-saving transformer with electromagnetic shielding function |
-
1993
- 1993-04-12 JP JP5084618A patent/JPH06303759A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115910571A (en) * | 2023-02-16 | 2023-04-04 | 江苏旭变变压器有限公司 | Energy-saving transformer with electromagnetic shielding function |
| CN115910571B (en) * | 2023-02-16 | 2023-12-05 | 国网浙江省电力有限公司杭州供电公司 | Energy-saving transformer with electromagnetic shielding |
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