JPS607894B2 - Salient pole rotating electric machine - Google Patents
Salient pole rotating electric machineInfo
- Publication number
- JPS607894B2 JPS607894B2 JP7464879A JP7464879A JPS607894B2 JP S607894 B2 JPS607894 B2 JP S607894B2 JP 7464879 A JP7464879 A JP 7464879A JP 7464879 A JP7464879 A JP 7464879A JP S607894 B2 JPS607894 B2 JP S607894B2
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- ventilation duct
- electric machine
- rotating electric
- rim
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/10—Arrangements for cooling or ventilating by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing
- H02K9/12—Arrangements for cooling or ventilating by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing wherein the cooling medium circulates freely within the casing
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Description
【発明の詳細な説明】
本発明は水車発電機などの突極形回転電機の通風冷却に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to ventilation cooling of a salient pole rotating electrical machine such as a water turbine generator.
近年水車発電機は大容量化の傾向にあり、特に揚水発電
電動機においては、発電所建設の経済性向上を計るため
に、高速大容量化の傾向が著しい。In recent years, there has been a trend towards increasing the capacity of water turbine generators, and in pumped storage generator motors in particular, there has been a remarkable trend toward increasing speed and capacity in order to improve the economic efficiency of power plant construction.
この回転電機の高速化に伴って、回転子の強度により、
回転子の直径が制限されるために、固定子鉄心の内径も
制限される。As the speed of this rotating electric machine increases, the strength of the rotor
Since the diameter of the rotor is limited, the inner diameter of the stator core is also limited.
このため回転電機の出力を増大させようとすると、固定
子鉄心の積厚、すなわち軸方向長さを増加することにな
る。従来一般に採用されている発電電動機の通風冷却構
造を第１図について説明する。回転予リムーの外周に装
着された複数個の磁極２相互間のスペースの電動ファン
３により軸万向に押込んだ冷却風を、固定子鉄心４の間
に設けたェアダクト５内に半径方向に流して、固定子鉄
心４および固定子コイル６を冷却した後、固定子枠７の
外周に取付けた空気冷却器８を通して再循環する。Therefore, in order to increase the output of the rotating electric machine, the stacking thickness of the stator core, that is, the axial length thereof must be increased. A ventilation cooling structure for a generator motor, which has been generally employed in the past, will be explained with reference to FIG. Cooling air is pushed axially in the space between the plurality of magnetic poles 2 attached to the outer periphery of the rotating pre-limb by the electric fan 3, and is radially directed into the air duct 5 provided between the stator cores 4. After cooling the stator core 4 and stator coils 6, the air is recirculated through an air cooler 8 attached to the outer periphery of the stator frame 7.
その場合、各磁極２間を軸方向に流れる流速は入口では
全風量が通過するために最も速く、中心に向かうほど風
量が減少するので遅くなる。In this case, the velocity of the flow that flows in the axial direction between the magnetic poles 2 is fastest at the entrance because the entire amount of air passes through it, and becomes slower toward the center because the amount of air decreases.
回転電機の容量が増加して、発生熱量が増大すると、所
要の冷却風量も増加して、このため各磁極２間入口にお
ける流速が上昇し、通風抵抗すなわち圧力損失が激増す
る。また固定子鉄心４の軸方向長さが長いために、軸方
向に流入した冷却空気は、図示しない回転子コイルの発
生熱を吸収して、軸中心に向かうほど高温となり、これ
に伴って固定子鉄心４ならびに固定子コイル６の軸方向
温度分布も不均一となる欠点があった。これを避けるた
めに、第１図に示す様に、回転子リム１にも通風ダクト
９を設けて所要風量の１部を、このダクト９を通して半
径方向に送り込むことによって、磁極間入口から押し込
む風量を減ずると共に、固定子鉄心４ならびに固定子コ
イル６の軸方向温度分布を一様化する方策がとられてい
る。As the capacity of the rotating electric machine increases and the amount of heat generated increases, the required amount of cooling air also increases, which increases the flow velocity at the inlet between each magnetic pole 2, and causes a drastic increase in ventilation resistance, that is, pressure loss. In addition, since the stator core 4 has a long axial length, the cooling air flowing in the axial direction absorbs the heat generated by the rotor coil (not shown), and becomes hotter as it moves toward the center of the shaft. There is also a drawback that the axial temperature distribution of the child core 4 and the stator coil 6 is non-uniform. In order to avoid this, a ventilation duct 9 is also provided in the rotor rim 1 as shown in FIG. At the same time, measures are being taken to make the axial temperature distribution of the stator core 4 and stator coil 6 uniform.
しかしながら、第１図に示す様に構成したものにおいて
は、磁極２間から軸方向に流入する冷却空気の流れと、
回転子リムーの通風ダクト９から磁極２間に半径方向に
流入する冷却空気の流れとが合流する際に、多大のうず
流損を生じ、この結果風損が増加して、回転電機の効率
を著しく低下させる欠点があった。However, in the configuration shown in FIG. 1, the flow of cooling air flowing in the axial direction from between the magnetic poles 2,
When the flow of cooling air flowing radially between the magnetic poles 2 from the ventilation duct 9 of the rotor rim merges, a large amount of eddy flow loss occurs, resulting in an increase in windage loss, which reduces the efficiency of the rotating electric machine. There was a drawback that caused a significant decline.
特に回転子の周速が１２０ｍ／秒を超える様な３００Ｍ
ＶＡ級の高速大容量機では、風損は２０００ｋＷ以上に
も達する莫大なものとなる。本発明は、磁極間入口部の
風速を減じて、その部分の圧力損失を減少させると共に
、風損の激増を招くことなく、所要の風量を磁極間に流
入させることにより、所要の冷却風量を流すに要するフ
ァン動力を減じると同時に、軸方向の温度分布が一様で
、効率の高い回転電機を提供することを目的とする。In particular, 300M where the circumferential speed of the rotor exceeds 120m/sec.
In a VA-class high-speed, large-capacity aircraft, the windage loss is enormous, reaching more than 2,000 kW. The present invention reduces the wind speed at the inlet between the magnetic poles to reduce the pressure loss in that area, and also allows the required amount of air to flow between the magnetic poles without causing a drastic increase in windage loss, thereby increasing the required amount of cooling air. It is an object of the present invention to provide a highly efficient rotating electric machine that reduces the fan power required for the flow, has uniform temperature distribution in the axial direction, and at the same time has uniform temperature distribution in the axial direction.
以下、本発明の一実施例について、第２図および第３図
を参照して説明する。An embodiment of the present invention will be described below with reference to FIGS. 2 and 3.
これらの図において第１図と同一部分には同一符号を付
して説明を省略する。この実施例において、１川ま各磁
極２間のスペースを鼠方向に３個の室１１，１２，１３
に仕切る磁極間通風仕切板で、各磁極２間に２枚宛配置
され、回転子リム１にボルト１４で取付けられる。In these figures, the same parts as in FIG. 1 are given the same reference numerals, and their explanation will be omitted. In this embodiment, the space between each magnetic pole 2 is divided into three chambers 11, 12, 13 in the mouse direction.
Two ventilation partition plates between the magnetic poles are arranged between each magnetic pole 2, and are attached to the rotor rim 1 with bolts 14.
そして回転子リム１の通風ダクト９は磁極間に仕切られ
た３個の室１１，１２，１３のうち、中央の室１２のみ
に通ずる様に設けられる。この様にすると、軸万向端部
の軸端側の室１１，１３には軸方向から、そして中央の
室１２には半径方向から、各々独立して冷却風を送り込
むことになるので、磁極２間入口から軸方向に流入する
冷却空気の流れと、回転子リムの通風ダクト９から半径
方向に流入する流れが混合することなく、従って両者の
合流によろうず流損の発生を抑止することが出来る。こ
の結果風損の激増を招くことなく、所要の冷却風量を確
保することが可能となる。The ventilation duct 9 of the rotor rim 1 is provided so as to communicate only with the central chamber 12 among the three chambers 11, 12, 13 partitioned between the magnetic poles. In this way, cooling air is sent independently to the chambers 11 and 13 on the end side of the shaft from the axial direction, and from the radial direction to the central chamber 12, so that the magnetic pole The flow of cooling air flowing in the axial direction from the inlet of the rotor rim and the flow flowing in the radial direction from the ventilation duct 9 of the rotor rim do not mix, thus preventing the occurrence of wax flow loss due to the merging of the two. I can do it. As a result, it becomes possible to secure the required amount of cooling air without causing a drastic increase in windage loss.
そして中央の室１２へ多量の冷却風風を送り込むので、
固定子鉄心４並びに固定子コイル６の麹方向の温度分布
をほぼ一様に保つことが可能になる。第４図に他の実施
例を示す。Since a large amount of cooling air is sent into the central chamber 12,
It becomes possible to maintain substantially uniform temperature distribution in the stator core 4 and stator coil 6 in the koji direction. FIG. 4 shows another embodiment.
これは回転子リム１の内周側端部開口部１５に通風制限
板１６を設けたものである。この通風制限板１６は通風
ダクト９の内周入口部１７に設けてもよい。この様にす
ると、ローターリムの通風ダクト９に半径方向に流入し
て、中央部の室１２に入る冷却空気量を加減できるので
、軸端側の室１１，１３に入る冷却空気量とのバランス
を適切に設定することが出来「 この結果固定子鉄心４
並びに固定子コイル６の軸万向の温度分布を、さらに一
様にして、一層信頼性の高い回転電機が得られる。This is provided with a ventilation restricting plate 16 at an opening 15 at the inner peripheral end of the rotor rim 1. This ventilation restriction plate 16 may be provided at the inner circumferential entrance portion 17 of the ventilation duct 9. In this way, the amount of cooling air that flows into the ventilation duct 9 of the rotor rim in the radial direction and enters the chamber 12 in the center can be adjusted, so the amount of cooling air that enters the chambers 11 and 13 on the shaft end side can be adjusted. As a result, stator core 4 can be set appropriately.
In addition, the temperature distribution in all axial directions of the stator coil 6 can be made even more uniform, and a rotating electrical machine with even higher reliability can be obtained.
尚、本発明は上記し、かつ図面に示した実施例のみに限
定されるものではなく、その要旨を変更しない範囲で、
種々変形して実施できることは勿論である。以上述べた
如く、本発明によれば、各磁極２間のスペースを軸方向
に３個の室に仕切り、軸端側の室１１，１３には軸方向
から、中央部の室ｉ２には半径方向から各々独立して冷
却風を送り込む様にしたので、所要の冷却風量を得るた
めのファン動力を減ずると共に、回転子の風損を大中に
減ずることが可能となり、軸方向の温度分布が一様で、
かつ効率の高い回転電機を提供できる。It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, but may include the following without changing the gist thereof:
Of course, it can be implemented with various modifications. As described above, according to the present invention, the space between each magnetic pole 2 is partitioned into three chambers in the axial direction, and the chambers 11 and 13 on the shaft end side are partitioned from the axial direction, and the chamber i2 in the center is partitioned from the radial direction. Since cooling air is sent in from each direction independently, it is possible to reduce the fan power required to obtain the required amount of cooling air, and also to greatly reduce the windage loss of the rotor, which improves the temperature distribution in the axial direction. Uniform,
Moreover, a highly efficient rotating electric machine can be provided.
第１図は従来の突極形回転電機を示す右半部縦断面図、
第２図は本発明の突極形回転電機の一実施例を示す右半
部縦断面図、第３図は第２図のｍ−ｍ線に沿う矢視拡大
断面図、第４図は他の実施例を示す右半部縦断面図であ
る。
１…・・・回転子リム、２・・・…磁極、９・・・・・
・通風ダクト、１０・…・・仕切板、１１，１３…・・
・麹端側の室、１２・・・・・・中央の室、１５・・・
・・・・・・回転子リム内周側軸端部の開口部、１６・
・・・・・通風制限板、１７・…・・通風ダクトの入口
部。
第１図
第２図
第３図
第４図Figure 1 is a vertical sectional view of the right half of a conventional salient pole type rotating electrical machine;
FIG. 2 is a vertical cross-sectional view of the right half of an embodiment of the salient pole type rotating electrical machine of the present invention, FIG. 3 is an enlarged cross-sectional view taken along line m-m in FIG. 2, and FIG. FIG. 2 is a vertical cross-sectional view of the right half of the embodiment. 1...Rotor rim, 2...Magnetic pole, 9...
・Ventilation duct, 10... Partition plate, 11, 13...
・Koji edge side chamber, 12...Central chamber, 15...
...Opening at the shaft end on the inner peripheral side of the rotor rim, 16.
...Ventilation restriction plate, 17...Inlet of ventilation duct. Figure 1 Figure 2 Figure 3 Figure 4
Claims (1)
の回転子リムの外周に装着した複数個の磁極とを備えた
回転子と、この回転子の外周側にあって半径方向に通風
ダクトを有する固定子とからなり、回転子の軸方向に押
込んだ冷却風を回転子リムの通風ダクトおよび磁極間の
スペースに流通させてから固定子側へ送るようにした突
極形回転電機において、回転子リムの通風ダクトを回転
子リム内周側軸端部の開口部に連通させ、各磁極間のス
ペースに軸方向の中央部に位置する中央の室を含む３個
の室を分割形成する２枚の通風仕切板を隔設し、この中
央の室にのみ前記回転子リムの通風ダクトを連通させた
ことを特徴とする突極形回転電機。1. A rotor including a rotor rim having a ventilation duct in the radial direction and a plurality of magnetic poles attached to the outer periphery of the rotor rim, and a fixed device located on the outer periphery of the rotor and having a ventilation duct in the radial direction. In a salient pole rotating electric machine, cooling air forced in the axial direction of the rotor is passed through the ventilation duct of the rotor rim and the space between the magnetic poles, and then sent to the stator side. The ventilation duct of the rim is communicated with the opening at the shaft end on the inner peripheral side of the rotor rim, and the space between each magnetic pole is divided into three chambers, including a central chamber located at the center in the axial direction. 1. A salient pole type rotating electric machine, characterized in that a ventilation partition plate is provided at intervals, and a ventilation duct of the rotor rim is communicated only with the central chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7464879A JPS607894B2 (en) | 1979-06-15 | 1979-06-15 | Salient pole rotating electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7464879A JPS607894B2 (en) | 1979-06-15 | 1979-06-15 | Salient pole rotating electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS561749A JPS561749A (en) | 1981-01-09 |
| JPS607894B2 true JPS607894B2 (en) | 1985-02-27 |
Family
ID=13553250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7464879A Expired JPS607894B2 (en) | 1979-06-15 | 1979-06-15 | Salient pole rotating electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS607894B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07204360A (en) * | 1994-01-18 | 1995-08-08 | Takeji Kinoshita | Spherical body motion mechanism |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6084075U (en) * | 1983-11-11 | 1985-06-10 | パイオニア株式会社 | printed wiring connection strip |
| JPS62123674A (en) * | 1985-11-25 | 1987-06-04 | 松下電工株式会社 | Branch connector of telephone flat cable |
| US6680552B2 (en) | 2002-01-24 | 2004-01-20 | Visteon Global Technologies, Inc. | Flow path for a liquid cooled alternator |
| US6674188B2 (en) | 2002-03-01 | 2004-01-06 | Visteon Global Technologies, Inc. | Liquid cooled alternator |
| DE102006020149A1 (en) * | 2006-05-02 | 2007-11-15 | Siemens Ag | Synchronous salient pole machine e.g. ring motor, for use in ball mill, has yoke with yoke section arranged between two salient poles, where yoke section has radial air passage that radially separates air portion |
-
1979
- 1979-06-15 JP JP7464879A patent/JPS607894B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07204360A (en) * | 1994-01-18 | 1995-08-08 | Takeji Kinoshita | Spherical body motion mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS561749A (en) | 1981-01-09 |
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