JP2013236462A - Rotary electric machine - Google Patents

Rotary electric machine Download PDF

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Publication number
JP2013236462A
JP2013236462A JP2012107236A JP2012107236A JP2013236462A JP 2013236462 A JP2013236462 A JP 2013236462A JP 2012107236 A JP2012107236 A JP 2012107236A JP 2012107236 A JP2012107236 A JP 2012107236A JP 2013236462 A JP2013236462 A JP 2013236462A
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short
circuit plate
shaped
lead
shaped short
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JP5814178B2 (en
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Yukinobu Sugawara
幸信 菅原
Fumio Matsumoto
二美夫 松本
Nobuyuki Sora
信之 空
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a rotary electric machine capable of improving the productivity and the assemblability of a short circuit plate connected to a lead bushing.SOLUTION: A rotary electric machine includes: a lead box arranged on a casing; a plurality of lead bushings drawn out from the lead box; U-shaped shot circuit plates respectively connected to the lead bushings; and a plurality of flexible connectors for connecting the U-shaped short circuit plates. The U-shaped short circuit plates eliminate the need of welding.

Description

この発明は、例えば、タービン発電機等の回転電機に関し、特にリードブッシングと短絡板とを接続する構造に関するものである。   The present invention relates to a rotating electrical machine such as a turbine generator, and more particularly to a structure for connecting a lead bushing and a short-circuit plate.

従来の回転電機としては、図18〜図22に示すものがある。ケーシング1の下方側にリードボックス2が配設され、そのリードボックス2から下方に複数のリードブッシング3が引き出されている。すなわち、三相構成の回転電機として3個のリードブッシング3が引き出されている。   Conventional rotary electric machines include those shown in FIGS. A lead box 2 is disposed below the casing 1, and a plurality of lead bushings 3 are drawn downward from the lead box 2. That is, three lead bushings 3 are drawn out as a three-phase rotating electric machine.

これらリードブッシング3のそれぞれに四角筒状体からなる短絡板4を接続している。これら短絡板4は温度上のメリットからL字の導体2枚を四角状に合わせ、それらA部を溶接することにより四角筒状体からなる短絡板4を形成している。リードブッシング3と短絡板4との組立の際、取付部が囲まれるため、四角筒状体からなる短絡板4に取付作業穴5が形成されている。   Each of the lead bushings 3 is connected to a short-circuit plate 4 made of a square cylindrical body. These short-circuit plates 4 are formed of a rectangular cylindrical body by aligning two L-shaped conductors in a square shape and welding these A portions because of temperature advantages. When the lead bushing 3 and the short-circuit plate 4 are assembled, the attachment portion is surrounded, so that the attachment work hole 5 is formed in the short-circuit plate 4 made of a rectangular cylindrical body.

短絡板4間は複数のフレキシブルコネクタ6により接続されている。このフレキシブルコネクタ6は、図21に示すように、四角筒状体からなる短絡板4の両側面とリードブッシング3の接続面に例えば6−1,6−2,6−3,6−4,6−5,6−6,6−7,6−8,6−9,6−10,6−11,6−12のように配設されている。   The short-circuit plates 4 are connected by a plurality of flexible connectors 6. As shown in FIG. 21, the flexible connector 6 has, for example, 6-1, 6-2, 6-3, 6-4 on both side surfaces of the short-circuit plate 4 made of a rectangular cylindrical body and the connection surface of the lead bushing 3. 6-5, 6-6, 6-7, 6-8, 6-9, 6-10, 6-11, 6-12.

3個の短絡板4の内、例えば中央の短絡板4にニュートラルコネクタ7が配設されており、両側の短絡板4からフレキシブルコネクタ6を通して中央の短絡板4に電流が流れる構成となっている。   Among the three short-circuit plates 4, for example, a neutral connector 7 is disposed on the central short-circuit plate 4, and a current flows from the short-circuit plates 4 on both sides through the flexible connector 6 to the central short-circuit plate 4. .

複数のフレキシブルコネクタ6の電流分布については最新の電磁界解析結果により図22に示すようになり、短絡板4のリードブッシング3の接続面に配置されたフレキシブルコネクタ6−5,6−6,6−7,6−8より短絡板4の下面側のフレキシブルコネクタ6−1,6−12に電流が集中している。   The current distribution of the plurality of flexible connectors 6 is as shown in FIG. 22 according to the latest electromagnetic field analysis result, and the flexible connectors 6-5, 6-6, 6 arranged on the connection surface of the lead bushing 3 of the short-circuit plate 4 Currents are concentrated on the flexible connectors 6-1 and 6-12 on the lower surface side of the short-circuit plate 4 from -7 and 6-8.

すなわち、短絡板4のリードブッシング3の接続面に配置されたフレキシブルコネクタ6−5,6−6,6−7,6−8は電流が小さく、短絡板4の下面側のフレキシブルコネクタ6−1,6−2,6−11,6−12は電流が大きく、中間に位置するフレキシブルコネクタ6−3,6−4,6−9,6−10は電流が中くらいである。   That is, the flexible connectors 6-5, 6-6, 6-7, 6-8 arranged on the connection surface of the lead bushing 3 of the short-circuit plate 4 have a small current, and the flexible connector 6-1 on the lower surface side of the short-circuit plate 4 is provided. , 6-2, 6-11, 6-12 have a large current, and the flexible connectors 6-3, 6-4, 6-9, 6-10 located in the middle have a medium current.

特開昭63−1342号公報Japanese Patent Laid-Open No. 63-1342

上述した従来の回転電機は、短絡板4が温度上のメリットからL字の導体2枚を四角状に合わせ、それらA部を溶接することにより四角筒状体からなる短絡板4を形成しているので、溶接の際の熱によりひずみが発生し、余分な成形作業及び溶接後の手入れに多大の時間がかかるという問題があった。   In the conventional rotating electrical machine described above, the short-circuit plate 4 is formed from a rectangular tubular body by joining two L-shaped conductors into a square shape and welding the A part thereof because of the merit in terms of temperature. Therefore, there is a problem that distortion occurs due to heat during welding, and it takes a lot of time for extra forming work and maintenance after welding.

また、リードブッシング3と短絡板4との組立の際、取付部が囲まれるため、取付作業
性が悪いという問題があった。
Further, when the lead bushing 3 and the short-circuit plate 4 are assembled, there is a problem that the mounting workability is poor because the mounting portion is surrounded.

さらに、フレキシブルコネクタ6−1,6−2,6−3,6−4,6−5,6−6,6−7,6−8,6−9,6−10,6−11,6−12の配置による電流損失分布は、図22に示すように、最新の電磁界解析結果によりフレキシブルコネクタ6−1,6−2,6−11,6−12に電流が集中し、電流損失が大きく悪化し電流の平準化もできないという問題があった。   Further, the flexible connectors 6-1, 6-2, 6-3, 6-4, 6-5, 6-6, 6-7, 6-8, 6-9, 6-10, 6-11, 6- As shown in FIG. 22, the current loss distribution due to the arrangement of 12 is concentrated in the flexible connectors 6-1, 6-2, 6-11, 6-12 according to the latest electromagnetic field analysis results, and the current loss is large. There was a problem that the current became worse and the current could not be leveled.

この発明は、上記のような課題を解決するためになされたものであり、その目的は、短絡板の製作性及び組立性を向上することができる回転電機を提供するものである。   The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a rotating electrical machine that can improve the manufacturability and assembly of a short-circuit plate.

この発明に係わる回転電機は、ケーシングに配設されたリードボックスと、前記リードボックスから引き出される複数のリードブッシングと、前記リードブッシングにそれぞれ接続されるU字状短絡板と、前記U字状短絡板間を接続する複数のフレキシブルコネクタとを備えたものである。   A rotating electrical machine according to the present invention includes a lead box disposed in a casing, a plurality of lead bushings drawn out from the lead box, U-shaped short-circuit plates connected to the lead bushings, and the U-shaped short circuit. And a plurality of flexible connectors for connecting between the plates.

この発明に係わる回転電機によれば、複数のリードブッシングにそれぞれ接続されるU字状短絡板と、U字状短絡板間を接続する複数のフレキシブルコネクタとを備えたことにより、短絡板の製作性及び組立性を向上することができる回転電機を得ることができる。   According to the rotating electrical machine according to the present invention, a U-shaped short-circuit plate connected to each of the plurality of lead bushings and a plurality of flexible connectors connecting the U-shaped short-circuit plates are provided. It is possible to obtain a rotating electrical machine that can improve the performance and the assemblability.

この発明の実施の形態1に係わる回転電機を示す斜視図である。It is a perspective view which shows the rotary electric machine concerning Embodiment 1 of this invention. この発明の実施の形態1に係わる回転電機を示す要部斜視図である。It is a principal part perspective view which shows the rotary electric machine concerning Embodiment 1 of this invention. この発明の実施の形態1に係わる回転電機における短絡板を示す斜視図である。It is a perspective view which shows the short circuit board in the rotary electric machine concerning Embodiment 1 of this invention. この発明の実施の形態1に係わる回転電機における短絡板を示す側面図である。It is a side view which shows the short circuit board in the rotary electric machine concerning Embodiment 1 of this invention. この発明の実施の形態1に係わる回転電機における電流損失を示す電流分布図である。It is a current distribution diagram which shows the current loss in the rotary electric machine concerning Embodiment 1 of this invention. この発明の実施の形態2に係わる回転電機における短絡板を示す側面図である。It is a side view which shows the short circuit board in the rotary electric machine concerning Embodiment 2 of this invention.

この発明の実施の形態3に係わる回転電機を示す斜視図である。It is a perspective view which shows the rotary electric machine concerning Embodiment 3 of this invention. この発明の実施の形態3に係わる回転電機を示す要部斜視図である。It is a principal part perspective view which shows the rotary electric machine concerning Embodiment 3 of this invention. この発明の実施の形態3に係わる回転電機における短絡板を示す斜視図である。It is a perspective view which shows the short circuit board in the rotary electric machine concerning Embodiment 3 of this invention. この発明の実施の形態3に係わる回転電機における短絡板を示す側面図である。It is a side view which shows the short circuit board in the rotary electric machine concerning Embodiment 3 of this invention. この発明の実施の形態4に係わる回転電機における短絡板を示す斜視図である。It is a perspective view which shows the short circuit board in the rotary electric machine concerning Embodiment 4 of this invention. この発明の実施の形態4に係わる回転電機における短絡板を示す側面図である。It is a side view which shows the short circuit board in the rotary electric machine concerning Embodiment 4 of this invention. この発明の実施の形態5に係わる回転電機を示す斜視図である。It is a perspective view which shows the rotary electric machine concerning Embodiment 5 of this invention. この発明の実施の形態5に係わる回転電機を示す要部斜視図である。It is a principal part perspective view which shows the rotary electric machine concerning Embodiment 5 of this invention. この発明の実施の形態5に係わる回転電機における短絡板を示す斜視図である。It is a perspective view which shows the short circuit board in the rotary electric machine concerning Embodiment 5 of this invention. この発明の実施の形態5に係わる回転電機における短絡板を示す側面図である。It is a side view which shows the short circuit board in the rotary electric machine concerning Embodiment 5 of this invention. この発明の実施の形態5に係わる回転電機における電流損失を示す電流分布図である。It is a current distribution figure which shows the current loss in the rotary electric machine concerning Embodiment 5 of this invention.

従来の回転電機を示す斜視図である。It is a perspective view which shows the conventional rotary electric machine. 従来の回転電機を示す要部斜視図である。It is a principal part perspective view which shows the conventional rotary electric machine. 従来の回転電機における短絡板を示す斜視図である。It is a perspective view which shows the short circuit board in the conventional rotary electric machine. 従来の回転電機における短絡板を示す側面図である。It is a side view which shows the short circuit board in the conventional rotary electric machine. 従来の回転電機における電流損失を示す電流分布図である。It is a current distribution figure which shows the current loss in the conventional rotary electric machine.

実施の形態1.
以下、この発明の実施の形態1を図1〜図5に基づいて説明するが、各図において、同一、または相当部材、部位については同一符号を付して説明する。図1はこの発明の実施の形態1に係わる回転電機を示す斜視図である。図2はこの発明の実施の形態1に係わる回転電機を示す要部斜視図である。図3はこの発明の実施の形態1に係わる回転電機における短絡板を示す斜視図である。図4はこの発明の実施の形態1に係わる回転電機における短絡板を示す側面図である。図5はこの発明の実施の形態1に係わる回転電機における電流損失を示す電流分布図である。
Embodiment 1 FIG.
Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 5. In each drawing, the same or equivalent members and parts will be described with the same reference numerals. 1 is a perspective view showing a rotary electric machine according to Embodiment 1 of the present invention. FIG. 2 is a perspective view showing a main part of the rotary electric machine according to Embodiment 1 of the present invention. FIG. 3 is a perspective view showing a short-circuit plate in the rotary electric machine according to Embodiment 1 of the present invention. 4 is a side view showing a short-circuit plate in the rotary electric machine according to Embodiment 1 of the present invention. FIG. 5 is a current distribution diagram showing current loss in the rotary electric machine according to Embodiment 1 of the present invention.

これら各図において、1は回転電機のケーシング、2はケーシング1の下方側に配設されたリードボックス、3はリードボックス2から下方に引き出されている複数のリードブッシングであり、三相構成の回転電機として3個のリードブッシング3がリードボックス2から引き出されている。   In each of these drawings, 1 is a casing of a rotating electrical machine, 2 is a lead box disposed on the lower side of the casing 1, 3 is a plurality of lead bushings drawn downward from the lead box 2, and has a three-phase configuration. Three lead bushings 3 are drawn out from the lead box 2 as rotating electric machines.

41は各リードブッシング3のそれぞれに接続されるU字状短絡板であり、図は一例として、U字状短絡板41のU字状開口がリードボックス2側に位置するように配設されている。   Reference numeral 41 denotes a U-shaped short-circuit plate connected to each of the lead bushings 3. As an example, the figure is arranged such that the U-shaped opening of the U-shaped short-circuit plate 41 is located on the lead box 2 side. Yes.

61はU字状短絡板41間を接続する複数のフレキシブルコネクタであり、これらフレキシブルコネクタ61は、図4に示すように、U字状短絡板41の両側面とリードブッシング3の接続面に例えば61−1,61−2,61−3,61−4,61−5,61−6,61−7,61−8,61−9,61−10,61−11,61−12のように配設されている。すなわち、フレキシブルコネクタ61−1,61−2,61−3,61−4,61−5,61−6,61−7,61−8,61−9,61−10,61−11,61−12はU字状短絡板41の外周面に配設された場合を示している。   Reference numeral 61 denotes a plurality of flexible connectors for connecting the U-shaped short-circuit plates 41, and these flexible connectors 61 are provided, for example, on both side surfaces of the U-shaped short-circuit plate 41 and the connection surface of the lead bushing 3 as shown in FIG. 4. 61-1, 61-2, 61-3, 61-4, 61-5, 61-6, 61-7, 61-8, 61-9, 61-10, 61-11, 61-12 It is arranged. That is, the flexible connectors 61-1, 61-2, 61-3, 61-4, 61-5, 61-6, 61-7, 61-8, 61-9, 61-10, 61-11, 61- Reference numeral 12 denotes a case where the U-shaped short-circuit plate 41 is disposed on the outer peripheral surface.

U字状短絡板41のリードブッシング3の接続面に配置されたフレキシブルコネクタ61−5,61−6,61−7,61−8は電流が小さく、U字状短絡板41のU字状開口側のフレキシブルコネクタ61−1,61−2,61−11,61−12は電流が大きく、中間に位置するフレキシブルコネクタ61−3,61−4,61−9,61−10は電流が中くらいである。   The flexible connectors 61-5, 61-6, 61-7, and 61-8 arranged on the connection surface of the lead bushing 3 of the U-shaped short-circuit plate 41 have a small current and the U-shaped opening of the U-shaped short-circuit plate 41. The flexible connectors 61-1, 61-2, 61-11, 61-12 on the side have a large current, and the flexible connectors 61-3, 61-4, 61-9, 61-10 located in the middle have a medium current. It is.

71は3個のU字状短絡板41の内、例えば中央のU字状短絡板41に配設されたニュートラルコネクタであり、両側のU字状短絡板41からフレキシブルコネクタ61を通して中央のU字状短絡板41に電流が流れる構成となっている。なお、8はラインターミナルである。   Reference numeral 71 denotes a neutral connector disposed on, for example, the central U-shaped short-circuit plate 41 among the three U-shaped short-circuit plates 41, and the central U-shape from the U-shaped short-circuit plates 41 on both sides through the flexible connectors 61. In this configuration, a current flows through the short circuit board 41. In addition, 8 is a line terminal.

次に動作について説明する。各リードブッシング3のそれぞれにU字状短絡板41のU字状開口がリードボックス2側に位置するようにU字状短絡板41を接続する。U字状短絡板41とすることにより、上述した従来のような溶接を行う必要がなくなり、U字状短
絡板41の製作性の向上及びコスト削減を図ることができる。
Next, the operation will be described. The U-shaped short-circuit plate 41 is connected to each lead bushing 3 so that the U-shaped opening of the U-shaped short-circuit plate 41 is positioned on the lead box 2 side. By using the U-shaped short-circuit plate 41, it is not necessary to perform the conventional welding described above, and it is possible to improve the productivity of the U-shaped short-circuit plate 41 and reduce the cost.

また、U字状短絡板41のU字状開口を利用してリードブッシング3の取り付け時のアクセスが容易となり、リードブッシング3とU字状短絡板41との組立性を向上することができる。   Further, the U-shaped opening of the U-shaped short-circuit plate 41 can be used to facilitate access when the lead bushing 3 is attached, and the assembly of the lead bushing 3 and the U-shaped short-circuit plate 41 can be improved.

ところで、この実施の形態1における電流分布は、最新の電磁界解析結果により図5に示すようになり、上述した従来の構造に比べ、U字状短絡板41のU字状開口側のフレキシブルコネクタ61−1,61−2,61−11,61−12の最大電流が減少し、電流分布を平準化させることができると共に、全体の損失も減少させることができる。   By the way, the current distribution in the first embodiment is as shown in FIG. 5 based on the latest electromagnetic field analysis result, which is a flexible connector on the U-shaped opening side of the U-shaped short-circuit plate 41 as compared with the conventional structure described above. The maximum currents 61-1, 61-2, 61-11, 61-12 are reduced, the current distribution can be leveled, and the overall loss can also be reduced.

実施の形態2.
この発明の実施の形態2を図6に基づいて説明する。図6はこの発明の実施の形態2に係わる回転電機における短絡板を示す側面図である。
Embodiment 2. FIG.
A second embodiment of the present invention will be described with reference to FIG. 6 is a side view showing a short-circuit plate in a rotary electric machine according to Embodiment 2 of the present invention.

上述した実施の形態1においては、フレキシブルコネクタ61−1,61−2,61−3,61−4,61−5,61−6,61−7,61−8,61−9,61−10,61−11,61−12がU字状短絡板41の外周面に配設された場合について述べたがこれに限定されるものではなく、この実施の形態2においては、フレキシブルコネクタ61−1,61−2,61−3,61−4,61−5,61−6,61−7,61−8,61−9,61−10,61−11,61−12がU字状短絡板41の内周面に配設した場合を示している。この実施の形態2においても、上述した実施の形態1と同様の効果を奏する。   In the first embodiment described above, the flexible connectors 61-1, 61-2, 61-3, 61-4, 61-5, 61-6, 61-7, 61-8, 61-9, 61-10. , 61-11 and 61-12 are described on the outer peripheral surface of the U-shaped short-circuit plate 41, but the present invention is not limited to this. In the second embodiment, the flexible connector 61-1 is provided. , 61-2, 61-3, 61-4, 61-5, 61-6, 61-7, 61-8, 61-9, 61-10, 61-11, 61-12 are U-shaped short-circuit plates. The case where it arrange | positions to the internal peripheral surface of 41 is shown. Also in the second embodiment, the same effects as in the first embodiment described above can be obtained.

実施の形態3.
この発明の実施の形態3を図7〜図10に基づいて説明するが、各図において、同一、または相当部材、部位については同一符号を付して説明する。図7はこの発明の実施の形態3に係わる回転電機を示す斜視図である。図8はこの発明の実施の形態3に係わる回転電機を示す要部斜視図である。図9はこの発明の実施の形態3に係わる回転電機における短絡板を示す斜視図である。図10はこの発明の実施の形態3に係わる回転電機における短絡板を示す側面図である。
Embodiment 3 FIG.
A third embodiment of the present invention will be described with reference to FIGS. 7 to 10. In the drawings, the same or corresponding members and parts will be described with the same reference numerals. FIG. 7 is a perspective view showing a rotary electric machine according to Embodiment 3 of the present invention. FIG. 8 is a perspective view showing a main part of a rotary electric machine according to Embodiment 3 of the present invention. FIG. 9 is a perspective view showing a short-circuit plate in a rotating electrical machine according to Embodiment 3 of the present invention. 10 is a side view showing a short-circuit plate in a rotary electric machine according to Embodiment 3 of the present invention.

これら各図において、1は回転電機のケーシング、2はリードボックス、3はリードブッシングである。   In these drawings, 1 is a casing of a rotating electrical machine, 2 is a lead box, and 3 is a lead bushing.

42は各リードブッシング3のそれぞれに接続されるU字状短絡板であり、図は一例として、U字状短絡板41のU字状開口がリードボックス2と相反する方向側に位置するように配設されている。   Reference numeral 42 denotes a U-shaped short-circuit plate connected to each lead bushing 3. As an example, the figure shows that the U-shaped opening of the U-shaped short-circuit plate 41 is located on the side opposite to the lead box 2. It is arranged.

62はU字状短絡板42間を接続する複数のフレキシブルコネクタであり、これらフレキシブルコネクタ62は、図10に示すように、U字状短絡板42の両側面とリードブッシング3の接続面に例えば62−1,62−2,62−3,62−4,62−5,62−6,62−7,62−8,62−9,62−10,62−11,62−12のように配設されている。すなわち、フレキシブルコネクタ62−1,62−2,62−3,62−4,62−5,62−6,62−7,62−8,62−9,62−10,62−11,62−12はU字状短絡板42の外周面に配設された場合を示している。   Reference numeral 62 denotes a plurality of flexible connectors for connecting the U-shaped short-circuit plates 42, and these flexible connectors 62 are provided, for example, on both side surfaces of the U-shaped short-circuit plate 42 and the connection surface of the lead bushing 3 as shown in FIG. 10. 62-1, 62-2, 62-3, 62-4, 62-5, 62-6, 62-7, 62-8, 62-9, 62-10, 62-11, 62-12 It is arranged. That is, the flexible connectors 62-1, 62-2, 62-3, 62-4, 62-5, 62-6, 62-7, 62-8, 62-9, 62-10, 62-11, 62- Reference numeral 12 denotes a case where the U-shaped short-circuit plate 42 is disposed on the outer peripheral surface.

U字状短絡板42のリードブッシング3の接続面に配置されたフレキシブルコネクタ62−5,62−6,62−7,62−8は電流が小さく、U字状短絡板42のU字状開口側のフレキシブルコネクタ62−1,62−2,62−11,62−12は電流が大きく、中間に位置するフレキシブルコネクタ62−3,62−4,62−9,62−10は電流が中くらいである。   The flexible connectors 62-5, 62-6, 62-7, and 62-8 arranged on the connection surface of the lead bushing 3 of the U-shaped short-circuit plate 42 have a small current, and the U-shaped opening of the U-shaped short-circuit plate 42. The flexible connectors 62-1, 62-2, 62-11, 62-12 on the side have a large current, and the flexible connectors 62-3, 62-4, 62-9, 62-10 located in the middle have a medium current. It is.

72は3個のU字状短絡板42の内、例えば中央のU字状短絡板42に配設されたニュートラルコネクタであり、両側のU字状短絡板42からフレキシブルコネクタ62を通して中央のU字状短絡板42に電流が流れる構成となっている。   Reference numeral 72 denotes a neutral connector disposed on, for example, the central U-shaped short-circuit plate 42 among the three U-shaped short-circuit plates 42, and the central U-shape from the U-shaped short-circuit plates 42 on both sides through the flexible connectors 62. In this configuration, a current flows through the short circuit plate 42.

次に動作について説明する。各リードブッシング3のそれぞれにU字状短絡板42のU字状開口がリードボックス2と相反する方向側に位置するようにU字状短絡板42を接続する。U字状短絡板42とすることにより、上述した従来のような溶接を行う必要がなくなり、U字状短絡板42の製作性の向上及びコスト削減を図ることができる。   Next, the operation will be described. The U-shaped short-circuit plate 42 is connected to each lead bushing 3 so that the U-shaped opening of the U-shaped short-circuit plate 42 is located on the side opposite to the lead box 2. By using the U-shaped short-circuit plate 42, it is not necessary to perform the conventional welding described above, and the productivity of the U-shaped short-circuit plate 42 can be improved and the cost can be reduced.

また、U字状短絡板42のU字状開口が下部側に開口しており、ラインターミナル8側の狭小スペースにおいて、そのU字状開口を利用してリードブッシング3の取り付け時のアクセスが上述した各実施の形態よりもより一層容易となり、リードブッシング3とU字状短絡板42との組立性をより一層向上することができる。   Further, the U-shaped opening of the U-shaped short-circuit plate 42 opens to the lower side, and the access at the time of attaching the lead bushing 3 using the U-shaped opening in the narrow space on the side of the line terminal 8 is described above. Thus, the assembly of the lead bushing 3 and the U-shaped short-circuit plate 42 can be further improved.

ところで、この実施の形態3における電流分布においても、最新の電磁界解析結果により図5に示すようになり、上述した従来の構造に比べ、U字状短絡板42のU字状開口側のフレキシブルコネクタ62−1,62−2,62−11,62−12の最大電流が減少し、電流分布を平準化させることができると共に、全体の損失も減少させることができる。   By the way, also in the current distribution in the third embodiment, as shown in FIG. 5 based on the latest electromagnetic field analysis results, the U-shaped opening side of the U-shaped short-circuit plate 42 is more flexible than the conventional structure described above. The maximum current of the connectors 62-1, 62-2, 62-11, 62-12 is reduced, the current distribution can be leveled, and the overall loss can also be reduced.

実施の形態4.
この発明の実施の形態4を図11及び図12に基づいて説明するが、各図において、同一、または相当部材、部位については同一符号を付して説明する。図11はこの発明の実施の形態4に係わる回転電機における短絡板を示す斜視図である。図12はこの発明の実施の形態4に係わる回転電機における短絡板を示す側面図である。
Embodiment 4 FIG.
A fourth embodiment of the present invention will be described with reference to FIGS. 11 and 12. In the drawings, the same or corresponding members and parts will be described with the same reference numerals. FIG. 11 is a perspective view showing a short-circuit plate in a rotary electric machine according to Embodiment 4 of the present invention. 12 is a side view showing a short-circuit plate in a rotary electric machine according to Embodiment 4 of the present invention.

上述した実施の形態3においては、フレキシブルコネクタ62−1,62−2,62−3,62−4,62−5,62−6,62−7,62−8,62−9,62−10,62−11,62−12がU字状短絡板42の外周面に配設された場合について述べたがこれに限定されるものではなく、この実施の形態4においては、フレキシブルコネクタ62−1,62−2,62−3,62−4,62−5,62−6,62−7,62−8,62−9,62−10,62−11,62−12がU字状短絡板42の内周面に配設した場合を示している。この実施の形態4においても、上述した実施の形態3と同様の効果を奏する。   In the third embodiment described above, the flexible connectors 62-1, 62-2, 62-3, 62-4, 62-5, 62-6, 62-7, 62-8, 62-9, 62-10. , 62-11 and 62-12 are described on the outer peripheral surface of the U-shaped short-circuit plate 42, but the present invention is not limited to this. In the fourth embodiment, the flexible connector 62-1 is provided. , 62-2, 62-3, 62-4, 62-5, 62-6, 62-7, 62-8, 62-9, 62-10, 62-11, 62-12 are U-shaped short-circuit plates. The case where it arrange | positions to the inner peripheral surface of 42 is shown. This fourth embodiment also has the same effect as the third embodiment described above.

実施の形態5.
この発明の実施の形態5を図13〜図17に基づいて説明するが、各図において、同一、または相当部材、部位については同一符号を付して説明する。図13はこの発明の実施の形態5に係わる回転電機を示す斜視図である。図14はこの発明の実施の形態5に係わる回転電機を示す要部斜視図である。図15はこの発明の実施の形態5に係わる回転電機における短絡板を示す斜視図である。図16はこの発明の実施の形態5に係わる回転電機における短絡板を示す側面図である。図17はこの発明の実施の形態5に係わる回転電機における電流損失を示す電流分布図である。
Embodiment 5 FIG.
A fifth embodiment of the present invention will be described with reference to FIGS. 13 to 17. In the drawings, the same or corresponding members and parts will be described with the same reference numerals. 13 is a perspective view showing a rotary electric machine according to Embodiment 5 of the present invention. FIG. 14 is a perspective view showing a main part of a rotary electric machine according to Embodiment 5 of the present invention. FIG. 15 is a perspective view showing a short-circuit plate in a rotary electric machine according to Embodiment 5 of the present invention. FIG. 16 is a side view showing a short-circuit plate in a rotary electric machine according to Embodiment 5 of the present invention. FIG. 17 is a current distribution diagram showing current loss in the rotary electric machine according to Embodiment 5 of the present invention.

これら各図において、1は回転電機のケーシング、2はリードボックス、3はリードブッシングである。   In these drawings, 1 is a casing of a rotating electrical machine, 2 is a lead box, and 3 is a lead bushing.

43は各リードブッシング3のそれぞれに接続されるU字状短絡板であり、図は一例として、U字状短絡板43のU字状開口がリードボックス2と相反する方向側に位置するように配設されている。   43 is a U-shaped short-circuit plate connected to each of the lead bushings 3, and as an example, the U-shaped opening of the U-shaped short-circuit plate 43 is located on the side opposite to the lead box 2. It is arranged.

63はU字状短絡板43間を接続する複数のフレキシブルコネクタであり、これらフレキシブルコネクタ63は、図16に示すように、U字状短絡板43の両側面とリードブッシング3の反接続面に例えば63−1,63−2,63−3,63−4,63−5,63−6,63−7,63−8,63−9,63−10,63−11,63−12のように配設されている。すなわち、フレキシブルコネクタ63−1,63−3,63−10,63−12はU字状短絡板43の側面の外周面に配設され、フレキシブルコネクタ63−2,63−4,63−9,63−11はU字状短絡板43の側面の内周面に配設され、フレキシブルコネクタ63−5,63−6,63−7,63−8はU字状短絡板43の反接続面に配設された場合を示している。なお、フレキシブルコネクタ63−5,63−6,63−7,63−8はU字状短絡板43の接続面側に配設されても同様の効果を奏する。   Reference numeral 63 denotes a plurality of flexible connectors for connecting the U-shaped short-circuit plates 43. These flexible connectors 63 are provided on both side surfaces of the U-shaped short-circuit plate 43 and the opposite connection surfaces of the lead bushings 3 as shown in FIG. For example, 63-1, 63-2, 63-3, 63-4, 63-5, 63-6, 63-7, 63-8, 63-9, 63-10, 63-11, 63-12 It is arranged. That is, the flexible connectors 63-1, 63-3, 63-10, 63-12 are disposed on the outer peripheral surface of the side surface of the U-shaped short-circuit plate 43, and the flexible connectors 63-2, 63-4, 63-9, 63-11 is arranged on the inner peripheral surface of the side surface of the U-shaped short-circuit plate 43, and the flexible connectors 63-5, 63-6, 63-7, 63-8 are arranged on the opposite connection surface of the U-shaped short-circuit plate 43. The case where it is arranged is shown. The flexible connectors 63-5, 63-6, 63-7, and 63-8 have the same effect even when arranged on the connection surface side of the U-shaped short-circuit plate 43.

U字状短絡板43のリードブッシング3の反接続面に配置されたフレキシブルコネクタ63−5,63−6,63−7,63−8は電流が小さく、U字状短絡板43のU字状開口側のフレキシブルコネクタ63−1,63−2,63−11,63−12は電流が大きく、中間に位置するフレキシブルコネクタ63−3,63−4,63−9,63−10は電流が中くらいである。   The flexible connectors 63-5, 63-6, 63-7, and 63-8 disposed on the U-shaped short-circuit plate 43 on the opposite side of the lead bushing 3 have a small current, and the U-shape of the U-shaped short-circuit plate 43 is U-shaped. The flexible connectors 63-1, 63-2, 63-11, 63-12 on the opening side have a large current, and the flexible connectors 63-3, 63-4, 63-9, 63-10 located in the middle have a medium current. It is about.

73は3個のU字状短絡板43の内、例えば中央のU字状短絡板43に配設されたニュートラルコネクタであり、両側のU字状短絡板43からフレキシブルコネクタ63を通して中央のU字状短絡板43に電流が流れる構成となっている。   Reference numeral 73 denotes a neutral connector disposed on, for example, the central U-shaped short-circuit plate 43 among the three U-shaped short-circuit plates 43, and the central U-shape from the U-shaped short-circuit plates 43 on both sides through the flexible connectors 63. The current flows through the short circuit plate 43.

次に動作について説明する。各リードブッシング3のそれぞれにU字状短絡板43のU字状開口がリードボックス2と相反する方向側に位置するようにU字状短絡板43を接続する。U字状短絡板43とすることにより、上述した従来のような溶接を行う必要がなくなり、U字状短絡板43の製作性の向上及びコスト削減を図ることができる。   Next, the operation will be described. The U-shaped short-circuit plate 43 is connected to each lead bushing 3 so that the U-shaped opening of the U-shaped short-circuit plate 43 is located on the side opposite to the lead box 2. By using the U-shaped short-circuit plate 43, it is not necessary to perform the conventional welding described above, and the productivity of the U-shaped short-circuit plate 43 can be improved and the cost can be reduced.

また、U字状短絡板43のU字状開口が下部側に開口しており、ラインターミナル8側の狭小スペースにおいて、そのU字状開口を利用してリードブッシング3の取り付け時のアクセスが上述した各実施の形態よりもより一層容易となり、リードブッシング3とU字状短絡板43との組立性をより一層向上することができる。   In addition, the U-shaped opening of the U-shaped short-circuit plate 43 opens to the lower side, and the access when the lead bushing 3 is attached using the U-shaped opening in the narrow space on the side of the line terminal 8 is described above. Thus, the assembly of the lead bushing 3 and the U-shaped short-circuit plate 43 can be further improved.

ところで、この実施の形態5における電流分布においては、最新の電磁界解析結果により図17に示すようになり、上述した従来の構造に比べ、U字状短絡板42のU字状開口側のフレキシブルコネクタ62−1,62−2,62−11,62−12の電流については上述した従来構造のものと概ね同じであるが、全体の損失は上述した従来構造のものより減少させることができる。   By the way, the current distribution in the fifth embodiment is as shown in FIG. 17 based on the latest electromagnetic field analysis result, and is more flexible on the U-shaped opening side of the U-shaped short circuit plate 42 than the conventional structure described above. The currents of the connectors 62-1, 62-2, 62-11, and 62-12 are substantially the same as those of the conventional structure described above, but the overall loss can be reduced as compared with the conventional structure described above.

また、U字状短絡板43のU字状開口がリードボックス2と相反する方向側に位置するように配設された場合に述べたが、これに限定されるものではなく、U字状短絡板43のU字状開口がリードボックス2側に位置するように配設しても同様の効果を奏する。   Moreover, although the case where the U-shaped opening of the U-shaped short-circuit plate 43 is disposed so as to be located on the side opposite to the lead box 2 is described, the present invention is not limited to this, and the U-shaped short circuit Even if the U-shaped opening of the plate 43 is disposed on the lead box 2 side, the same effect is obtained.

ところで、上述した各実施の形態においては、ニュートラルターミナル71,72,73がそれぞれ中央部に位置するU字状短絡板41,42,43に配置された場合について述べたが、これに限定されるものではなく、両側に位置する何れか一方のU字状短絡板41,42,43にニュートラルターミナル71,72,73を配置することも可能であり、同様の効果を奏する。   By the way, in each embodiment mentioned above, although the case where neutral terminal 71,72,73 was each arrange | positioned at the U-shaped short circuit board 41,42,43 located in the center part was described, it is limited to this. The neutral terminals 71, 72, 73 can be arranged on any one of the U-shaped short-circuit plates 41, 42, 43 located on both sides, and the same effect can be obtained.

なお、この発明は、その発明の範囲内において、各実施の形態を自由に組み合わせたり、各実施の形態を適宜、変形、省略することが可能である。   It should be noted that within the scope of the present invention, the embodiments can be freely combined, or the embodiments can be appropriately modified or omitted.

この発明は、複数のリードブッシングにそれぞれ接続されるU字状短絡板と、U字状短絡板間を接続する複数のフレキシブルコネクタとを備えたことにより、短絡板の製作性及び組立性を向上することができる回転電機の実現に好適である。   This invention improves the manufacturability and assemblability of the shorting plate by providing a U-shaped shorting plate connected to each of the plurality of lead bushings and a plurality of flexible connectors connecting the U-shaped shorting plates. This is suitable for the realization of a rotating electrical machine that can do this.

1 ケーシング
2 リードボックス
3 リードブッシング
41 U字状短絡板
61 フレキシブルコネクタ
42 U字状短絡板
62 フレキシブルコネクタ
43 U字状短絡板
63 フレキシブルコネクタ
DESCRIPTION OF SYMBOLS 1 Casing 2 Lead box 3 Lead bushing 41 U-shaped short circuit board 61 Flexible connector 42 U-shaped short circuit board 62 Flexible connector 43 U-shaped short circuit board 63 Flexible connector

Claims (6)

ケーシングに配設されたリードボックスと、前記リードボックスから引き出される複数のリードブッシングと、前記リードブッシングにそれぞれ接続されるU字状短絡板と、前記U字状短絡板間を接続する複数のフレキシブルコネクタとを備えたことを特徴とする回転電機。   A lead box disposed in the casing, a plurality of lead bushings drawn out from the lead box, a U-shaped short-circuit plate connected to the lead bushing, and a plurality of flexible members connecting between the U-shaped short-circuit plates A rotating electric machine comprising a connector. 前記U字状短絡板は、そのU字状開口が前記リードボックス側に位置するよう配設されたことを特徴とする請求項1に記載の回転電機。   2. The rotating electrical machine according to claim 1, wherein the U-shaped short-circuit plate is disposed such that a U-shaped opening is positioned on the lead box side. 前記U字状短絡板は、そのU字状開口が前記リードボックスと相反する方向側に位置するよう配設されたことを特徴とする請求項1に記載の回転電機。   2. The rotating electrical machine according to claim 1, wherein the U-shaped short-circuit plate is disposed so that the U-shaped opening is located on a side opposite to the lead box. 前記フレキシブルコネクタは、前記U字状短絡板の外周面に配設されたことを特徴とする請求項1ないし請求項3の何れか1項に記載の回転電機。   The rotating electrical machine according to any one of claims 1 to 3, wherein the flexible connector is disposed on an outer peripheral surface of the U-shaped short-circuit plate. 前記フレキシブルコネクタは、前記U字状短絡板の内周面に配設されたことを特徴とする請求項1ないし請求項3の何れか1項に記載の回転電機。   The rotating electrical machine according to any one of claims 1 to 3, wherein the flexible connector is disposed on an inner peripheral surface of the U-shaped short-circuit plate. 前記フレキシブルコネクタは、前記U字状短絡板の外周面および内周面に配設されたことを特徴とする請求項1ないし請求項3の何れか1項に記載の回転電機。

The rotating electrical machine according to any one of claims 1 to 3, wherein the flexible connector is disposed on an outer peripheral surface and an inner peripheral surface of the U-shaped short-circuit plate.

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CN113056862A (en) * 2018-11-30 2021-06-29 西门子能源美国公司 Multilayer neutral bus
JP2022511440A (en) * 2018-11-30 2022-01-31 シーメンス エナジー インコーポレイテッド Multi-layer neutral bus
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