JPH053228B2 - - Google Patents
Info
- Publication number
- JPH053228B2 JPH053228B2 JP59135306A JP13530684A JPH053228B2 JP H053228 B2 JPH053228 B2 JP H053228B2 JP 59135306 A JP59135306 A JP 59135306A JP 13530684 A JP13530684 A JP 13530684A JP H053228 B2 JPH053228 B2 JP H053228B2
- Authority
- JP
- Japan
- Prior art keywords
- superconducting
- shield
- winding
- armature winding
- rotor
- 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
- 238000004804 winding Methods 0.000 claims description 40
- 239000004020 conductor Substances 0.000 claims description 21
- 230000005284 excitation Effects 0.000 claims description 5
- 230000005291 magnetic effect Effects 0.000 description 28
- 230000000694 effects Effects 0.000 description 8
- 230000004907 flux Effects 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 239000002887 superconductor Substances 0.000 description 4
- 230000005292 diamagnetic effect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K55/00—Dynamo-electric machines having windings operating at cryogenic temperatures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- 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
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Superconductive Dynamoelectric Machines (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は回転電機に係り、特に、小型で効率の
高い超電導回転電機に好適な回転電機に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a rotating electrical machine, and more particularly to a rotating electrical machine suitable for a compact and highly efficient superconducting rotating electrical machine.
一般に、界磁巻線を超電導化した回転界磁形超
電導回転電機に於いて、超電導界磁巻線からの交
流強磁界を外部に対してシールドする方法には、
例えば、ICEC9（1982年）で、T.Ishigohkaの
“The optimum environmental shielding
system of superconducting generators”に示
されるように、積層鉄心の磁気シールド、銅やア
ルミニウムなどの導電率の大きな導体からなるう
ず電流シールドなどが知られており、また、両者
を組合わせたものも提案されている。
Generally, in a rotating field type superconducting rotating electric machine in which the field winding is made superconducting, methods for shielding the alternating current strong magnetic field from the superconducting field winding from the outside include:
For example, in ICEC9 (1982), T. Ishigohka's “The optimum environmental shielding
As shown in ``system of superconducting generators'', magnetic shields with laminated iron cores and eddy current shields made of conductors with high conductivity such as copper and aluminum are known, and a combination of both has also been proposed. ing.
しかし、鉄心シールドは鉄心の磁気緩和現象の
ため、外部へのシールド効果を十分達成させるに
は鉄心シールドを厚くする必要があるが、これに
伴い機械寸法の大型化や重量が増大し、更には、
シールド部に鉄損を発生するという問題がある。
また、うず電流シールドは、常時うず電流が発生
し、電機子巻線部の磁束密度が低下するため出力
が低下する。 However, because of the magnetic relaxation phenomenon in the core, it is necessary to thicken the core shield in order to achieve a sufficient external shielding effect, but this increases the size and weight of the machine, and furthermore, ,
There is a problem that iron loss occurs in the shield part.
Further, in the eddy current shield, eddy current is constantly generated, and the magnetic flux density of the armature winding portion decreases, resulting in a decrease in output.
一方、鉄心シールドとうず電流シールドを組合
せた構造では、内側の鉄心シールドを磁気的に飽
和させ、漏れ磁束を更に外側にうず電流シールド
で交流磁界をシールドするもので、常時、損失を
発生して磁界をシールドする点では前述の二例と
変りなく、超電導発電機の特徴である高効率と小
型化を達成することができなかつた。 On the other hand, in a structure that combines an iron core shield and an eddy current shield, the inner iron core shield is magnetically saturated, leakage magnetic flux is removed, and the eddy current shield is placed outside to shield alternating current magnetic fields, which constantly generates loss. In terms of shielding the magnetic field, this is the same as the previous two examples, and it was not possible to achieve the high efficiency and miniaturization that are the characteristics of superconducting generators.
本発明は上述の点に鑑みなされたもので、その
目的とするところは、超電導導体が超電導状態で
は内部り磁界が侵入しないという性質、即ち、完
全反磁性良くシールドすることのできる回転電機
を提供するにある。
The present invention has been made in view of the above-mentioned points, and its purpose is to provide a rotating electric machine that has a property in which a superconducting conductor has a property in which magnetic fields do not penetrate inside when in a superconducting state, that is, it is completely diamagnetic and can be well shielded. There is something to do.
本発明は電機子巻線が超電導導体を介してリン
グ状に巻回されて形成され、かつ、この電機子巻
線の外周に、該電機子巻線を包囲するように超電
導シールドを配置することにより、所期の目的を
達成するようになしたものである。
In the present invention, an armature winding is formed by being wound in a ring shape through a superconducting conductor, and a superconducting shield is arranged around the outer periphery of the armature winding so as to surround the armature winding. This was done to achieve the intended purpose.
以下、図示した実施例に基づいて本発明を詳細
に説明する。
Hereinafter, the present invention will be explained in detail based on illustrated embodiments.
第１図、及び第２図に本発明の一実施例である
回転界磁形同期機の例を示し、特に、第２図は電
機子巻線の詳細を示した径方向断面図である。 1 and 2 show an example of a rotating field type synchronous machine which is an embodiment of the present invention, and in particular, FIG. 2 is a radial cross-sectional view showing details of the armature winding.
該図に示す本実施例の回転電機は、回転子１
と、この回転子１に所定の間〓を待つて配置され
た固定子２から概略構成されている。回転子１は
外部の電源３によつて励磁される励磁巻線４を内
蔵し、軸受５によつて支持され駆動機６によつて
回転する。一方、固定子２は空〓部に所定の方法
で固定された電機子巻線７、及び超電導体、特
に、交流磁界に対する臨界磁界の大きな超電導シ
ールド８などで構成されている。超電導シールド
８は電機子巻線７の外周を同心状に被い、ヘリウ
ム供給装置９からの液体ヘリウムにより極低温に
冷却される。 The rotating electrical machine of this embodiment shown in the figure has a rotor 1
The rotor 1 is generally composed of a stator 2 placed on the rotor 1 for a predetermined period of time. The rotor 1 includes an excitation winding 4 that is excited by an external power source 3, is supported by a bearing 5, and is rotated by a drive machine 6. On the other hand, the stator 2 is composed of an armature winding 7 fixed in a predetermined manner in an air space, and a superconductor, particularly a superconducting shield 8 having a large critical magnetic field with respect to an alternating magnetic field. The superconducting shield 8 concentrically covers the outer periphery of the armature winding 7 and is cooled to an extremely low temperature by liquid helium from a helium supply device 9.
回転子１の励磁巻線４からの磁束φは電機子巻
線７と鎖交し、回転子１の回転と共に移動するの
で電機子巻線７には交流出力が誘起される。ま
た、電機子巻線７と鎖交した磁束φは、電機子巻
線７の外径側では超電導シールド８のMeissner
効果により完全遮へいされるため、図示のように
電機子巻線７と超電導シールド８との間を周方向
に通る磁路を形成し、閉回路を作る。 The magnetic flux φ from the excitation winding 4 of the rotor 1 interlinks with the armature winding 7 and moves with the rotation of the rotor 1, so that an AC output is induced in the armature winding 7. In addition, the magnetic flux φ interlinked with the armature winding 7 is caused by the Meissner of the superconducting shield 8 on the outer diameter side of the armature winding 7.
Since the shielding effect is completely shielded, a magnetic path passing in the circumferential direction is formed between the armature winding 7 and the superconducting shield 8 as shown in the figure, thereby creating a closed circuit.
なお、上述のMeissner効果とは、外部磁界を
超電導体に印加した場合、過去のヒステリシスに
拘らず、それが超電導状態にある限り、超電導体
内部に磁界が侵入できない性質である。この性質
を利用することにより電機子巻線７、及び回転子
励磁巻線４からの磁界が、超電導シールド８の内
部へ侵入するのを防ぐことができる。また、上記
構成とすることにより、シールド部に電気的損失
を発生させないで、すなわち、誘導電流を発生さ
せないで交流磁界を機外に対し遮へいすることが
でき、回転電機として高効率化が可能となる。更
に、磁束流路部には磁性材など磁気飽和の問題が
生じる部材がないので、超電導シールド８は、少
なくとも、超電導状態に保持する限り超電導材の
除界磁界の許容範囲で電機子巻線７に近づけ得る
ので、機械寸法の小形化、及び回転子起磁力を低
減でき、高効率化が可能である。 The above-mentioned Meissner effect is a property that when an external magnetic field is applied to a superconductor, the magnetic field cannot enter the inside of the superconductor as long as the superconductor remains in the superconducting state, regardless of past hysteresis. By utilizing this property, the magnetic fields from the armature winding 7 and the rotor excitation winding 4 can be prevented from penetrating into the superconducting shield 8. In addition, by adopting the above configuration, it is possible to shield the alternating current magnetic field from the outside of the machine without causing electrical loss in the shield part, that is, without generating induced current, and it is possible to improve the efficiency of the rotating electrical machine. Become. Furthermore, since there is no member such as a magnetic material in the magnetic flux flow path that causes a problem of magnetic saturation, the superconducting shield 8 can at least maintain the armature winding 7 within the permissible range of the field removal field of the superconducting material as long as the superconducting state is maintained. , it is possible to reduce the machine dimensions, reduce the rotor magnetomotive force, and increase efficiency.
また、本実施例では、超電導シールド８の外周
の常温の円筒状導体１０を配置している。これに
よれば超電導シールド８が外乱により常電導に転
移したときには超電導シールド８には完全反磁性
のMeissner効果が消失するため、交流磁界は超
電導導体の外径側にまで侵入するが、円筒状導体
１０がうず電流を発生し導体シールドとなる。従
つて、定常運転時は超電導シールド８が損失なし
で機内の磁界を遮へいし、超電導シールド８が外
乱により常電導に転移した事故時等には、円筒状
導体１０がシールド効果を発生するから、外部に
対し常時確実に磁界を遮へいすることができる。
この円筒状導体１０は銅やアルミニウムやその合
金などで構成するのが良く、超電導シールド８の
外周に配置されるので、超電導シールド８の熱容
量が等価的に増大するので超電導シールド８の安
定性が増大する。 Further, in this embodiment, a cylindrical conductor 10 at room temperature is arranged around the outer periphery of the superconducting shield 8. According to this, when the superconducting shield 8 transitions to normal conductivity due to a disturbance, the Meissner effect of complete diamagnancy disappears in the superconducting shield 8, so the AC magnetic field penetrates to the outer diameter side of the superconducting conductor, but the cylindrical conductor 10 generates an eddy current and serves as a conductor shield. Therefore, during steady operation, the superconducting shield 8 shields the magnetic field inside the machine without loss, and in the event of an accident where the superconducting shield 8 changes to normal conductivity due to a disturbance, the cylindrical conductor 10 generates a shielding effect. It is possible to always reliably shield magnetic fields from the outside.
This cylindrical conductor 10 is preferably made of copper, aluminum, or an alloy thereof, and is placed around the outer periphery of the superconducting shield 8, so that the heat capacity of the superconducting shield 8 is equivalently increased and the stability of the superconducting shield 8 is improved. increase
また、超電導シールド８は特性の異なるものを
複数個同心状に配置して形成しても良い。この場
合は、任意の一層の超電導シールド８が常電導転
位しても、超電導状態を保つている他層の超電導
導体がバツクアツプし、交流磁界を遮へいするの
で、更に、シールド効果の信頼性が向上する。 Further, the superconducting shield 8 may be formed by concentrically arranging a plurality of superconducting shields having different characteristics. In this case, even if any one layer of the superconducting shield 8 undergoes normal conductive dislocation, the superconducting conductors of the other layers that maintain the superconducting state back up and shield the alternating magnetic field, further improving the reliability of the shielding effect. do.
更に、本実施例では、電機子巻線７が円筒状超
電導導体８′と絶縁構造物１２を介して、回転子
１と所定の間隙をもつてリング状に巻回されたも
のが複数個周方向に配置されており、その外径側
には更に超電導シールド８、及び常温の円筒状導
体１０が同心状に配置されている。 Furthermore, in this embodiment, a plurality of armature windings 7 are wound in a ring shape with a predetermined gap between them and the rotor 1 via a cylindrical superconducting conductor 8' and an insulating structure 12. A superconducting shield 8 and a room temperature cylindrical conductor 10 are further arranged concentrically on the outer diameter side thereof.
このような構造にすることにより、回転子１か
らの磁束φは円筒状超電導導体８′の完全反磁性
により、リング巻きされた電機子巻線７の内径側
７1のみを切り、外径側７0には到達しないので、
電機子巻線７の出力端子１３からみて、内径側７
１の誘起電圧が加算され、効率良くリング巻き電
機子巻線から発電できる。また、特に、リング巻
き電機子巻線は絶縁構造物１２を囲むように巻回
されるため、これが強度メンバーとなつて、該巻
線部の耐電磁力支持も容易に行ない得る効果もあ
る。 With such a structure, the magnetic flux φ from the rotor 1 cuts only the inner diameter side 71 of the ring-wound armature winding 7 and cuts the outer diameter side due to the complete diamagnetic property of the cylindrical superconducting conductor 8'. Since it does not reach 7 0 ,
Viewed from the output terminal 13 of the armature winding 7, the inner diameter side 7
1 of induced voltage is added, and power can be efficiently generated from the ring-wound armature winding. Further, in particular, since the ring-wound armature winding is wound so as to surround the insulating structure 12, it serves as a strength member and has the effect of easily supporting the winding portion against electromagnetic force.
また、内径側の円筒状超電導導体８′と外径側
の超電導シールド８の間の空間には、単に電機子
巻線７の出力電流によつて生ずる漏れ磁束φの
み存在するだけであるから、外径側の超電導シー
ルド８は内径側よりも臨界磁界の小さな安価な超
電導材を使用できる。 Furthermore, since only the leakage magnetic flux φ generated by the output current of the armature winding 7 exists in the space between the cylindrical superconducting conductor 8' on the inner diameter side and the superconducting shield 8 on the outer diameter side, For the superconducting shield 8 on the outer diameter side, an inexpensive superconducting material having a smaller critical magnetic field than that on the inner diameter side can be used.
以上説明した本発明の回転電機によれば、電機
子巻線が超電導導体を介してリング状に巻回され
て形成され、かつ、この電機子巻線の外周に、該
電機子巻線を包囲するように超電導シールドを配
置したものであるから、完全反磁性の性質を持つ
超電導導体で交流磁界の外部に対する遮へいが電
気的損失の発生を伴わずにできるので、回転電機
の小型高効率化に効果がある。
According to the rotating electrical machine of the present invention as described above, the armature winding is formed by being wound in a ring shape through a superconducting conductor, and the armature winding is surrounded by an outer periphery of the armature winding. Since the superconducting shield is arranged in such a way that the superconducting conductor has completely diamagnetic properties, it is possible to shield the AC magnetic field from the outside without causing electrical loss, making it possible to make rotating electric machines smaller and more efficient. effective.
第１図は本発明の回転電機の一実施例の概略を
示す軸方向断面図、第２図は第１図の径方向断面
図である。
１…回転子、２…固定子、３…電源、４…励磁
巻線、７…電機子巻線、８…超電導シールド、
８′…円筒状超電導導体、１０…常温の円筒状導
体、φ…磁束。
FIG. 1 is an axial sectional view schematically showing an embodiment of a rotating electric machine of the present invention, and FIG. 2 is a radial sectional view of FIG. 1. 1... Rotor, 2... Stator, 3... Power source, 4... Excitation winding, 7... Armature winding, 8... Superconducting shield,
8'... Cylindrical superconducting conductor, 10... Cylindrical conductor at room temperature, φ... Magnetic flux.
Claims (1)
回転する回転子と、該回転子と所定の間〓を持つ
て配置され、その間〓部に所定の手段で固定され
た電機子巻線を有する固定子とを備えた回転電機
において、前記電機子巻線は、巻線が超電導導体
を介してリング状に巻回されて形成され、かつ、
該電機子巻線の外周に、該電機子巻線を包囲する
ように超電導シールドを配置したことを特徴とす
る回転電機。 ２ 前記超電導導体を介してリング状に巻回して
形成された電機子巻線を、周方向に複数個配置し
たことを特徴とする特許請求の範囲第１項記載の
回転電機。 ３ 前記超電導シールドの外周に常温の円筒状導
体を配置したことを特徴とする特許請求の範囲第
１項記載の回転電機。 ４ 前記超電導シールドを、前記電機子巻線の外
径側に同心状に複数個配置したことを特徴とする
特許請求の範囲第１項、又は第３項記載の回転電
機。[Scope of Claims] 1. A rotor having a built-in excitation winding and rotating while being supported by a bearing, and a rotor disposed with a predetermined distance from the rotor, and fixed to the outer portion thereof by a predetermined means. In the rotating electric machine, the armature winding is formed by winding the winding in a ring shape through a superconducting conductor, and
A rotating electric machine characterized in that a superconducting shield is disposed around the outer periphery of the armature winding so as to surround the armature winding. 2. The rotating electric machine according to claim 1, wherein a plurality of armature windings formed by winding the superconducting conductor in a ring shape are arranged in a circumferential direction. 3. The rotating electric machine according to claim 1, wherein a cylindrical conductor at room temperature is arranged around the outer periphery of the superconducting shield. 4. The rotating electric machine according to claim 1 or 3, wherein a plurality of the superconducting shields are arranged concentrically on the outer diameter side of the armature winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59135306A JPS6115541A (en) | 1984-07-02 | 1984-07-02 | Stator of rotary electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59135306A JPS6115541A (en) | 1984-07-02 | 1984-07-02 | Stator of rotary electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6115541A JPS6115541A (en) | 1986-01-23 |
| JPH053228B2 true JPH053228B2 (en) | 1993-01-14 |
Family
ID=15148631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59135306A Granted JPS6115541A (en) | 1984-07-02 | 1984-07-02 | Stator of rotary electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6115541A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6447547U (en) * | 1987-09-18 | 1989-03-23 | ||
| JP2533914B2 (en) * | 1988-05-27 | 1996-09-11 | 川崎重工業株式会社 | Synchronous motor |
-
1984
- 1984-07-02 JP JP59135306A patent/JPS6115541A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6115541A (en) | 1986-01-23 |
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