JPS6173529A - Rotary electric machine - Google Patents
Rotary electric machineInfo
- Publication number
- JPS6173529A JPS6173529A JP19442284A JP19442284A JPS6173529A JP S6173529 A JPS6173529 A JP S6173529A JP 19442284 A JP19442284 A JP 19442284A JP 19442284 A JP19442284 A JP 19442284A JP S6173529 A JPS6173529 A JP S6173529A
- Authority
- JP
- Japan
- Prior art keywords
- stator core
- core
- electric machine
- stator
- axial direction
- 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
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
- H02K3/505—Fastening of winding heads, equalising connectors, or connections thereto for large machine windings, e.g. bar windings
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】
［発明の技術分野］
本発明は、固定子鉄心端部における電気損失の低減化を
図った回転電機に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a rotating electric machine in which electrical loss at the end of a stator core is reduced.
［発明の技術的背景とその問題点］
回転電機の固定子鉄心は、うず常流損の低減の為透磁率
の高い簿いケイソ鋼板を軸方向に積み重り、その軸方向
両端を押え板により加圧固定して構成されている。[Technical background of the invention and its problems] In order to reduce eddy current loss, the stator core of a rotating electric machine is made by stacking thin silica steel plates with high magnetic permeability in the axial direction, and holding plates at both ends in the axial direction. It is configured to be fixed under pressure.
また、回転電機の固定子巻線（電数子巻線）は、固定子
鉄心のスロットより突出してコイルエンド（巻線端部）
が形成され、ここで固定子巻線を構成する導体夫々が半
径方向及び円周方向に折曲し、夫々が電気的に接続され
ている。上記巻線端部では型開子巻線に流れる電流と、
界磁巻線からの漏れ磁束とにより固定子鉄心端部の構造
物、例えば上記押え板、固定子鉄心歯先部を押えている
外側間隔片が導電物なるが故に加熱され、損失が発生す
る。また、主磁束によっても、固定子鉄心軸方向の半径
方向冷却ダクトを構成する内側間隔片に上記同様に損失
が発生する。In addition, the stator winding (electronic winding) of a rotating electric machine protrudes from the slot of the stator core and the coil end (winding end)
The conductors constituting the stator winding are bent in the radial direction and the circumferential direction, and are electrically connected to each other. At the end of the winding, the current flowing through the type opener winding,
Due to the leakage magnetic flux from the field winding, structures at the end of the stator core, such as the above-mentioned presser plate and the outer spacing piece that presses the tips of the teeth of the stator core, are heated because they are conductive materials, resulting in loss. . In addition, the main magnetic flux also causes loss in the inner spacer pieces that constitute the radial cooling duct in the axial direction of the stator core in the same manner as described above.
また、回転電機背部への磁束の漏れによって、上記押え
板の両側を一体に締め付けている円周方向に十数本配置
された鉄心リブ棒に起電力を生じ、この鉄心リブ捧と固
定子鉄心との結合部及び上記押え板との接触部が十分に
電気絶縁が施されていない場合には循環電流が流れ発熱
する。In addition, leakage of magnetic flux to the back of the rotating electric machine generates an electromotive force in the core rib rods, which are arranged in the circumferential direction and tightens both sides of the holding plate, and the core rib rods and the stator core. If the connecting portion with the presser plate and the contact portion with the presser plate are not sufficiently electrically insulated, a circulating current will flow and generate heat.
従来、上記発熱に伴う電気損失を低減するために上記押
え板をＩＩのシールド板で覆ったり、また上記押え板を
水冷却したり、非磁鋼材を用いたりしていた。また、外
側間隔片も同様に非磁鋼を用い、水冷団することも考え
られている。また、押え仮とリブ棒の締付ナツトの接触
面とを絶縁コーティングしたり、短絡リング帯を取付け
たりしているが、いづれも電気損失や循環電流を無くす
ることはできず、発熱の集中部は温度上昇の点で問題を
提起していた。Conventionally, in order to reduce electrical loss due to the heat generation, the holding plate has been covered with a II shield plate, the holding plate has been cooled with water, or a non-magnetic steel material has been used. It is also being considered that the outer spacing piece may be made of non-magnetic steel and water-cooled. In addition, the contact surface of the presser foot and the tightening nut of the rib rod is insulated and coated, and short-circuit rings are installed, but none of these methods can eliminate electrical loss or circulating current, resulting in concentrated heat generation. Department had raised issues regarding temperature rise.
一方、固定子巻線端部は、上記押え根近傍に支持部材を
設け、この支持部材によりバインド帯支え等により支持
されている。これに対し、近時、固定子鉄心端部の冷却
性の向上及び構成の簡素化の要請から、従来の構成にお
ける固定子巻線端部の支持部材の省略が望まれていた。On the other hand, the end portion of the stator winding is supported by a support member such as a bind band support provided in the vicinity of the presser foot. On the other hand, in recent years, there has been a desire to omit the support member for the stator winding end in the conventional structure due to a demand for improved cooling performance of the stator core end and a simplified structure.
［発明の目的］
本発明は上記事情に基づいてなされたもので、その目的
は、固定予巻Ｉ！ｉ！端部の支持構成を簡略化すること
を可能として且つ固定子鉄心端部に生ずる電気損失を減
少させることが可能な回転電機を提供することにある。[Object of the Invention] The present invention has been made based on the above circumstances, and its object is to provide a fixed pre-winding I! i! It is an object of the present invention to provide a rotating electric machine that can simplify the support structure of the end portion and reduce electrical loss occurring at the end portion of the stator core.
［発明の概要］
本発明に係る回転電機は、固定子鉄心の軸方向両端を締
付けるものであって、固定子鉄心の鉄心端歯部まで延長
した押え板を、絶縁物を用い、その軸方向に凸部を形成
し、曲げ剛性を高めると共に固定予巻ＩＩ端部を支える
支え板の補強骨として機能するようにしたことを特徴と
している。[Summary of the Invention] A rotating electric machine according to the present invention is for tightening both ends of a stator core in the axial direction, using an insulating material to tighten a holding plate extending to the toothed end of the core of the stator core. This feature is characterized in that a convex portion is formed on the rim to increase bending rigidity and to function as a reinforcing bone for the support plate that supports the end portion of the fixed pre-winding II.
［発明の実施例１
本発明に係る回転電機を第１図〜第３図に示す一実施例
に従い説明する。[Embodiment 1 of the Invention A rotating electrical machine according to the present invention will be described according to an embodiment shown in FIGS. 1 to 3.
第１図は本実施例の回転電機の固定子鉄心端部の断面図
である。第２図は第１図における固定子鉄心１の外周側
から見た図であり、第３図は第１図のＩｉ力方向ら見た
部分断面図である。即ち、１は簿ケイ素鋼板の積層抜板
よりなる固定子鉄心であり、円周方向に分割されている
。上記抜板は、軸方向に伸びるリブ捧２のキ一部３によ
り位置決めされ、両端に配置された押え板４とリブ捧２
及びリプナツト５により軸方向に締付は固定さている。FIG. 1 is a sectional view of the stator core end of the rotating electrical machine of this embodiment. 2 is a view of the stator core 1 in FIG. 1 viewed from the outer periphery side, and FIG. 3 is a partial sectional view viewed from the Ii force direction in FIG. 1. That is, 1 is a stator core made of stacked and punched silicon steel plates, and is divided in the circumferential direction. The above-mentioned punching is performed by positioning the rib part 3 of the rib bar 2 extending in the axial direction, and the presser plate 4 and the rib bar 2 arranged at both ends.
The tightening is fixed in the axial direction by a lip nut 5.
リプ棒２及びリブキー３は、一体品であり、絶縁物、例
えば強化プラスチックス製成形捧よりなる。The lip bar 2 and the rib key 3 are an integral part, and are made of an insulating material, for example, a molded rod made of reinforced plastic.
６は、銅板製シールド板で鉄心１の抜板と同一断面を有
し、円周方向に分割され、それぞれは絶縁されている。Reference numeral 6 denotes a shield plate made of a copper plate, which has the same cross section as the punched core 1, is divided in the circumferential direction, and is insulated from each other.
また押え板４は、例えばエポキシ積層板等の絶縁物より
なり、剛性の増加と固定子鉄心１のスロット内に組み込
まれた固定予巻１７のエンド部を支持するために比較的
太き目の補強骨８が一体として成形されている。The holding plate 4 is made of an insulating material such as an epoxy laminate, and is relatively thick in order to increase rigidity and support the end portion of the fixed pre-winding 17 incorporated in the slot of the stator core 1. A reinforcing bone 8 is integrally molded.
さらに押え板４の鉄心１に接する面には、冷却ダクトと
なる溝９が放射線上に複数形成されている。Furthermore, a plurality of grooves 9 serving as cooling ducts are formed radially on the surface of the holding plate 4 that is in contact with the iron core 1.
固定子鉄心１には軸方向に適宜間隔を介して冷却ダクト
１０が設けられ、この冷却ダクト１０内には放射状に多
数の内側間隔片１１を固定子鉄心１に強力接着剤で貼り
付けられている。Cooling ducts 10 are provided in the stator core 1 at appropriate intervals in the axial direction, and inside the cooling duct 10, a large number of inner spacer pieces 11 are radially pasted to the stator core 1 with a strong adhesive. There is.
この内側間隔片１１は、例えば強化プラスチック成形品
又はセラミックス等の絶縁物よりなる。This inner spacer piece 11 is made of, for example, a reinforced plastic molded product or an insulating material such as ceramics.
次に上記の如く構成された本実施例の作用について説明
する。即ち、押え板４を絶縁物に替えたことにより、固
定子巻線１のエンド部の電流による漏れ磁束によって生
ずる押え板４の発熱は生じない。Next, the operation of this embodiment configured as described above will be explained. That is, by replacing the holding plate 4 with an insulating material, heat generation in the holding plate 4 caused by leakage magnetic flux caused by current at the end portion of the stator winding 1 does not occur.
またリブ棒２及びリブキー３を絶縁物に替えたことによ
り、主磁束の鉄心背面への漏れによる鉄心内周部（ティ
ース部）とリブキー３とでループが形成されて流れる循
環電流による発生は無くなる。In addition, by replacing the rib bar 2 and the rib key 3 with insulators, the occurrence of circulating current caused by a loop formed between the core inner circumference (teeth portion) and the rib key 3 due to main magnetic flux leaking to the back of the core is eliminated. .
押え板４を絶縁部としたことにより、鉄心端面までの磁
気抵抗は増大するが、押え板４に吸収される磁束弁が無
くなるので、鉄心端面に入る磁束は依然として存在する
。しかし、この鉄心端面に入る磁束弁は、固定子鉄心１
の抜板と同一形状の円周方向に分割された銅板シールド
６によりシールドされるので、上記磁束により発生した
熱は、押え仮４に加工された冷ｆ！Ｉ溝９内を流れる冷
却ガスにより冷却させることができる。By making the holding plate 4 an insulating part, the magnetic resistance up to the core end face increases, but since there is no magnetic flux valve absorbed by the holding plate 4, magnetic flux entering the core end face still exists. However, the magnetic flux valve that enters this core end face is
Since it is shielded by a copper plate shield 6 that is divided in the circumferential direction and has the same shape as the punched sheet, the heat generated by the magnetic flux is transferred to the cold f! It can be cooled by the cooling gas flowing inside the I groove 9.
なお、冷却ガスは、第１図の矢印で示されるように鉄心
内周面のみならず押え板４と巻線７との間の図示Ａ部よ
りも流れる。Note that the cooling gas flows not only through the inner circumferential surface of the core, but also through a portion A in the figure between the holding plate 4 and the winding 7, as indicated by the arrows in FIG.
以上述べたように、本実施例によれば、固定子鉄心１、
巻Ｉ！７も十分冷却され、機械的強度も下げることなく
、低損失の回転電渫となすることができる。更に、押え
板は補強骨８を形成するので、固定子巻線７のエンド部
の支持構成部品を省略することが可能となる。As described above, according to this embodiment, the stator core 1,
Volume I! 7 is also sufficiently cooled, and can be made into a low-loss rotating electric pump without reducing mechanical strength. Furthermore, since the holding plate forms the reinforcing bone 8, it is possible to omit support components for the end portions of the stator windings 7.
〔発明の効果］
以上述べたように本発明によれば、回転電機の押え板を
、絶縁物を用い、その軸方向に凸部を形成し、曲げ剛性
を高めると共に固定子巻線端部を支える支え板の補強骨
として機能させるようにしたので、上記固定子巻線端部
の支持構成の簡単化が可能となり、上記固定子鉄心端部
に生ずる電気損失を減少させることを可能とした回転電
機が提供できる。[Effects of the Invention] As described above, according to the present invention, the holding plate of a rotating electrical machine is made of an insulating material and has a convex portion formed in the axial direction to increase bending rigidity and to improve the stator winding end portion. Since it functions as a reinforcing bone for the support plate, it is possible to simplify the support structure for the stator winding end, and to reduce electrical loss occurring at the stator core end. Electric equipment can be provided.
第１図は本発明の一実施例の回転眉間の固定子鉄心端部
の横断面図、第２図は第１図における固定子鉄心を外周
側より見た部分図 第３図は第１図のＩｉ力方向ら見た
部分断面図である。
１・・・固定子鉄心、２・・・リブ捧、３・・・リブキ
ー、５・・・リブナツト、４・・・押え板、６・・・銅
板シールド、１１・・・内側間隔片。
出願人代理人 弁理士 鈴江武彦
第１図
第２図FIG. 1 is a cross-sectional view of the end of the stator core between the rotary eyebrows according to an embodiment of the present invention, and FIG. 2 is a partial view of the stator core in FIG. 1 as viewed from the outer circumferential side. FIG. FIG. 3 is a partial cross-sectional view of FIG. DESCRIPTION OF SYMBOLS 1... Stator core, 2... Rib support, 3... Rib key, 5... Rib nut, 4... Holding plate, 6... Copper plate shield, 11... Inner spacing piece. Applicant's agent Patent attorney Takehiko Suzue Figure 1 Figure 2
Claims (4)
り上記固定子鉄心を両端から締付けてなり、上記固定子
鉄心の側面には放射状に通風溝が設けてなる回転電機に
おいて、上記押え板は、絶縁物からなるものであって、
曲げ剛性を高めて上記固定子鉄心端部から突出した固定
子巻線端部を支える支え板の補強骨として機能するべく
軸方向に凸部が形成されたことを特徴とする回転電機。(1) In a rotating electrical machine in which the stator core is clamped from both ends by a presser plate that extends to the core end teeth of the stator core, and in which ventilation grooves are provided radially on the sides of the stator core, the presser plate The board is made of an insulating material,
A rotating electric machine characterized in that a convex portion is formed in the axial direction to increase bending rigidity and function as a reinforcing bone of a support plate that supports the stator winding end protruding from the stator core end.
鉄心を構成する鉄心抜板と同一形状の銅板シールドを設
け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。(2) Claim (1) characterized in that a copper plate shield having the same shape as the punched core constituting the stator core is provided between the holding plate and the end of the stator core. The rotating electric machine described.
して、高強度の絶縁物を用い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) The rotating electric machine according to claim (1), wherein a high-strength insulator is used as the axial rib rod that fixes the stator core from the outer circumferential side.
径方向冷却用ダクトを構成する内側間隔片は、絶縁物を
用い、固定子鉄心抜板に接着材にて固定したことを特徴
とする特許請求の範囲第（１）項記載の回転電機。(4) The inner spacing pieces constituting the radial cooling ducts, which are arranged at predetermined intervals in the axial direction of the stator core, are made of an insulating material and fixed to the stamped stator core with an adhesive. A rotating electric machine according to claim (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19442284A JPS6173529A (en) | 1984-09-17 | 1984-09-17 | Rotary electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19442284A JPS6173529A (en) | 1984-09-17 | 1984-09-17 | Rotary electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6173529A true JPS6173529A (en) | 1986-04-15 |
Family
ID=16324338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19442284A Pending JPS6173529A (en) | 1984-09-17 | 1984-09-17 | Rotary electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6173529A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0414448U (en) * | 1990-05-25 | 1992-02-05 | ||
| JP2006320100A (en) * | 2005-05-12 | 2006-11-24 | Mitsubishi Electric Corp | Stator of dynmo-electric machine |
| JP2008312379A (en) * | 2007-06-15 | 2008-12-25 | Mitsubishi Electric Corp | Rotating electrical machine |
| CN102437662A (en) * | 2011-12-26 | 2012-05-02 | 中船重工电机科技股份有限公司 | Engine base of motor stator core |
| CN110603715A (en) * | 2017-05-11 | 2019-12-20 | 三菱电机株式会社 | Stator of rotating electric machine |
| US11031832B2 (en) * | 2018-04-10 | 2021-06-08 | Kabushiki Kaisha Toshiba | Stator of rotating electrical machine and method of manufacturing stator of rotating electrical machine |
-
1984
- 1984-09-17 JP JP19442284A patent/JPS6173529A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0414448U (en) * | 1990-05-25 | 1992-02-05 | ||
| JP2006320100A (en) * | 2005-05-12 | 2006-11-24 | Mitsubishi Electric Corp | Stator of dynmo-electric machine |
| JP2008312379A (en) * | 2007-06-15 | 2008-12-25 | Mitsubishi Electric Corp | Rotating electrical machine |
| CN102437662A (en) * | 2011-12-26 | 2012-05-02 | 中船重工电机科技股份有限公司 | Engine base of motor stator core |
| CN110603715A (en) * | 2017-05-11 | 2019-12-20 | 三菱电机株式会社 | Stator of rotating electric machine |
| EP3624307A4 (en) * | 2017-05-11 | 2020-04-29 | Mitsubishi Electric Corporation | Rotating electric machine stator |
| US11146124B2 (en) | 2017-05-11 | 2021-10-12 | Mitsubishi Electric Corporation | Rotating electric machine stator |
| US11031832B2 (en) * | 2018-04-10 | 2021-06-08 | Kabushiki Kaisha Toshiba | Stator of rotating electrical machine and method of manufacturing stator of rotating electrical machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0193929B1 (en) | Method for making a servomotor | |
| JP2002335648A (en) | Cooling of electric machine | |
| WO1999050949A1 (en) | Electrical machine element | |
| WO2002015229A1 (en) | High performance slotless electric motor and method for making same | |
| JP4415433B2 (en) | Electric motor | |
| EP3567701B1 (en) | Magnet module for a permanent magnet machine | |
| JPS54113010A (en) | Electric rotary machine | |
| JPS6173529A (en) | Rotary electric machine | |
| US2611797A (en) | Dynamoelectric machine with resiliently supported stator | |
| US4281266A (en) | Dynamoelectric machine with flux screen | |
| JP2000270502A (en) | Rotating machine | |
| US20030193259A1 (en) | Stator core containing iron-aluminum alloy laminations and method of using | |
| CN201113581Y (en) | Dipolar single-phase alternator stator stamping possessing ventilation slot | |
| EP4027492A1 (en) | Integral damping winding, rotor and motor | |
| JP2009130958A (en) | Rotating electric machine | |
| US20030077476A1 (en) | Stacked sheet metal laminate | |
| JPH11136883A (en) | Dc motor with brush | |
| JPS6024253A (en) | Linear type electromagnetic stirrer | |
| CN214013959U (en) | High-speed motor structure | |
| JPH1023692A (en) | Rotor for electric rotary machine | |
| JPH05943B2 (en) | ||
| JPS5869444A (en) | Salient-pole rotor | |
| JPS596756A (en) | Induction motor | |
| CN112311110A (en) | High-speed motor structure | |
| JPS6351789B2 (en) |