JPS60141137A - Stator of rotary electric machine - Google Patents
Stator of rotary electric machineInfo
- Publication number
- JPS60141137A JPS60141137A JP58246680A JP24668083A JPS60141137A JP S60141137 A JPS60141137 A JP S60141137A JP 58246680 A JP58246680 A JP 58246680A JP 24668083 A JP24668083 A JP 24668083A JP S60141137 A JPS60141137 A JP S60141137A
- Authority
- JP
- Japan
- Prior art keywords
- stator
- winding
- stator core
- duct
- stator winding
- 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
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/42—Means for preventing or reducing eddy-current losses in the winding heads, e.g. by shielding
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
- H02K9/223—Heat bridges
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
【発明の詳細な説明】 〔発明の利用分野〕 本発明は回転り機の固定子に関するものである。[Detailed description of the invention] [Field of application of the invention] The present invention relates to a stator for a rotating machine.
第１図にはタービン発電機の従来例が示されている。同
図に示されているように発電機は固定子および回転子１
から構成され、固定子は固定子鉄心２をダクト３を介し
て押え板４で固定し、この押え板４で固定したＬｍｌ屋
子妖心２の端部から固定子巻線５が軸方向に突出してい
る。回転子１はこの固定子の内側に位置し、回転子巻線
６を内蔵している。FIG. 1 shows a conventional example of a turbine generator. As shown in the figure, the generator has a stator and a rotor 1.
The stator consists of a stator core 2 fixed by a holding plate 4 through a duct 3, and a stator winding 5 protruding in the axial direction from the end of the Lml Yako Yoshin 2 fixed by the holding plate 4. ing. The rotor 1 is located inside the stator and contains rotor windings 6.
このように構成されたタービン発電機の固定子鉄心２の
端部では、磁束の発生状況および半径方向磁束笛度と固
定子巻線エンド部との関係が示されている第２図に示さ
れているように、固定予巻＃ｉＩ５および回転子巻線６
のつくる磁束Ｇによって固定子鉄心２の端部に磁束Ｇ６
り集中がおこる。この磁束Ｇの大きさは図中点線表示の
曲線Ｐのように発電機の三相短絡時と図中実線表示の曲
ｆ＃Ｑのように定格負荷時とでは大きく異なり、定格負
荷時の方か固定子巻線５の端部に果中する磁束密度がｗ
！ｌている。そしてこの磁束によって、縦軸にに、向ボ
子巻線５の各素線間に起電力を訪発し、この起電力に基
く循環電流によって各素線の電流分布を不均一にしてい
る。このため工場で三相短絡試験を夾施しても現地の据
付状態で定格負荷をとると、この各素線の電流分布の不
均一成分によって固定子巻線５が部分的に温度が上り、
固定子巻線５の絶縁物を損傷する恐れがあった。At the end of the stator core 2 of the turbine generator configured in this way, the relationship between the magnetic flux generation situation and the radial magnetic flux degree and the stator winding end is shown in FIG. As shown, fixed prewinding #iI5 and rotor winding 6
A magnetic flux G6 is generated at the end of the stator core 2 by the magnetic flux G created by
Concentration occurs. The magnitude of this magnetic flux G differs greatly between when the three phases of the generator are shorted, as shown by the dotted line curve P in the figure, and when the generator is at rated load, as shown by the solid line curve f#Q in the figure. The magnetic flux density at the end of the stator winding 5 is w
! I'm there. This magnetic flux generates an electromotive force between each strand of the stranded winding 5 along the vertical axis, and a circulating current based on this electromotive force makes the current distribution in each strand non-uniform. For this reason, even if a three-phase short circuit test is carried out at the factory, if the rated load is applied in the installed state at the site, the temperature of the stator winding 5 will rise partially due to the non-uniform component of the current distribution of each strand.
There was a risk that the insulation of the stator winding 5 would be damaged.
本発明は以上の点に鑑みなされたものであり、固定子巻
線の局部的な温度上昇の低減を可能とした回転電機の固
定子を提供することを目的とするものである。The present invention has been made in view of the above points, and it is an object of the present invention to provide a stator for a rotating electrical machine that can reduce local temperature rises in the stator windings.
すなわち本発明はダクトを介して固定された固定子鉄心
と、この固定子鉄心に収納され、かつ前記固定子鉄心か
ら軸方向に突出した固定子巻線とを有している回転電機
の固定子において、前記固定子鉄心２端の前記ダクトに
、前記固定子巻線を前記固定子鉄心の反対方向にその内
周側から蔽う導電性の磁気じゃ載板全役けたことを特徴
とするものであり、これによって固定子巻線の端部（エ
ンド部）は磁気じゃ載板によって回転子巻線からの磁束
の侵入が防止されるようになる。That is, the present invention provides a stator for a rotating electrical machine that has a stator core fixed through a duct, and a stator winding housed in the stator core and protruding in the axial direction from the stator core. , wherein the duct at two ends of the stator core is provided with a conductive magnetic barrier plate that covers the stator winding from the inner circumferential side in the opposite direction of the stator core. As a result, the end portions of the stator windings are prevented from entering magnetic flux from the rotor windings by the magnetic blocking plates.
〔発明の実施例〕
以下、図示した実施例に基づいて本発明を説明する。第
４図から第６図には本発明の一実施例が示されている。[Embodiments of the Invention] The present invention will be described below based on illustrated embodiments. An embodiment of the present invention is shown in FIGS. 4-6.
ｆＬお従来と同じ部品には同じ符号を付したので説明を
省略する。本実施例では固定子鉄心２端部のダクト３に
、固定子巻線５を固定子鉄心２０反対方向にその内周側
から蔽う導電性の磁気じゃ載板７を設けた。このようＫ
することにより固定子巻線５の端部は磁気しや載板７に
よって回転子巻線からの磁束の侵入が防止されるように
なって、固定子巻線５０局部的な温度上昇の低減を可能
とした回転電機の固定子を得ることができる。fL The same parts as in the conventional one are given the same reference numerals, so the explanation will be omitted. In this embodiment, a conductive magnetic blocking plate 7 is provided in the duct 3 at the end of the stator core 2 to cover the stator winding 5 from the inner circumferential side in the direction opposite to the stator core 20. K like this
By doing so, the end of the stator winding 5 is prevented from entering the magnetic flux from the rotor winding by the magnetic shield plate 7, and the local temperature rise of the stator winding 50 is reduced. It is possible to obtain a stator for a rotating electric machine that is made possible.
すなわち磁気じゃ載板（第６図参照）７をボルト８で固
定子鉄心２端部のダクト３に、固定子巻線５をその内周
から包み込むようにして固定した（第４図および第５図
参照）。このようにすることにより回転子巻線のつくる
磁束の固定子巻線５端部への侵入が防止されるようにな
って、固定子巻線５端部への磁束の集中がなくなり、半
径方向の磁束による固定子巻線５の素線の電流分布の不
均一が防止でき、固定子巻線５の局部的な温度上昇が低
減できる。That is, a magnetic loading plate 7 (see Fig. 6) was fixed to the duct 3 at the end of the stator core 2 with bolts 8 so as to wrap around the stator winding 5 from its inner circumference (see Figs. 4 and 5). (see figure). By doing this, the magnetic flux generated by the rotor winding is prevented from entering the stator winding 5 end, and the concentration of magnetic flux at the stator winding 5 end is eliminated, and the radial direction Non-uniform current distribution in the strands of the stator winding 5 due to the magnetic flux can be prevented, and local temperature increases in the stator winding 5 can be reduced.
上述のように本発明は固定子巻線端部への磁束の集中が
防止されるようになって、固定子巻線の素線の電流分布
の不均一が防止されるようになり、固定子巻線の局部的
な温度上昇の低減を可能とした回転電機の固定子を得る
ことができる。As described above, the present invention prevents concentration of magnetic flux at the ends of the stator winding, thereby preventing uneven current distribution in the strands of the stator winding. It is possible to obtain a stator for a rotating electrical machine that can reduce local temperature rise in the windings.
第１図は従来の回転電機の固定子によるタービン発電機
要部の縦断側面図、第２図は従来の回転電機の固定子に
よるタービン発電機の運転状態と固定子巻線上の磁束密
度とを示す説明図、第３図は従来の回転電機の固定子の
固定子巻線の素線の電流分布を示す説明図、第４図は本
発明の回転電機の固定子の一実施例の固定子巻線端部の
縦断側面図、第５図は同じく一実施例の軸方向から見た
固定子巻線端部の断面図、第６図は同じく一実施例の磁
気じゃ載板の斜視図である。
２−・・固定子鉄心、３・・・ダクト、５・・・固定子
巻線、６・・・回転子巻線、７・・・磁気しや載板。
代理人 弁理士 長崎博男
：Ｈ，（−、（
（ほか１名）
茅３固
茅４− 目
茅 ５ 即
３
５ δ ７
第６ 固Fig. 1 is a vertical cross-sectional side view of the main part of a turbine generator using the stator of a conventional rotating electric machine, and Fig. 2 shows the operating state of the turbine generator using the stator of a conventional rotating electric machine and the magnetic flux density on the stator winding. FIG. 3 is an explanatory diagram showing the current distribution of the strands of the stator winding of a stator of a conventional rotating electrical machine, and FIG. 4 is a stator of an embodiment of the stator of a rotating electrical machine of the present invention. FIG. 5 is a cross-sectional view of the stator winding end seen from the axial direction of one embodiment, and FIG. 6 is a perspective view of the magnetic interference plate of one embodiment. be. 2--Stator core, 3--Duct, 5--Stator winding, 6--Rotor winding, 7--Magnetic shield plate. Agent Patent attorney Hiroo Nagasaki: H, (-, ( (1 other person) Kaya 3 Koka 4- Meko 5 Soku 3 5 δ 7 6th Ko
Claims (1)
定子鉄心に収納され、かつ前記固定子鉄心から軸方向に
矢高した固定子巻線とを有している回転′ｔｉｌＬ機の
１６１定子において、前記固定子鉄心端部の前記ダクト
に、前記固定子巻線を前記固定子鉄心の反対方間にその
内周側から蔽う導電性の磁気じゃ蔽板金設けたことを性
徴とする回転゛電機の固定子。1. A 161 stator for a rotary 'tilL machine, which has a stator core fixed through a duct, and a stator winding housed in the stator core and axially elevated from the stator core. The rotation characterized by the fact that the duct at the end of the stator core is provided with a conductive magnetic shielding plate metal that covers the stator winding from the inner circumferential side between the opposite sides of the stator core. Electrical stator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58246680A JPS60141137A (en) | 1983-12-28 | 1983-12-28 | Stator of rotary electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58246680A JPS60141137A (en) | 1983-12-28 | 1983-12-28 | Stator of rotary electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60141137A true JPS60141137A (en) | 1985-07-26 |
Family
ID=17152017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58246680A Pending JPS60141137A (en) | 1983-12-28 | 1983-12-28 | Stator of rotary electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60141137A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2541740A1 (en) * | 2011-06-29 | 2013-01-02 | Grundfos Holding A/S | Stator |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52124104A (en) * | 1976-04-12 | 1977-10-18 | Toshiba Corp | Stator core for electric rotary machine |
-
1983
- 1983-12-28 JP JP58246680A patent/JPS60141137A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52124104A (en) * | 1976-04-12 | 1977-10-18 | Toshiba Corp | Stator core for electric rotary machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2541740A1 (en) * | 2011-06-29 | 2013-01-02 | Grundfos Holding A/S | Stator |
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