JP2014220929A - Stator coil and revolving-armature - Google Patents

Stator coil and revolving-armature Download PDF

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Publication number
JP2014220929A
JP2014220929A JP2013099080A JP2013099080A JP2014220929A JP 2014220929 A JP2014220929 A JP 2014220929A JP 2013099080 A JP2013099080 A JP 2013099080A JP 2013099080 A JP2013099080 A JP 2013099080A JP 2014220929 A JP2014220929 A JP 2014220929A
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turn
stator coil
rotor
stator
stepped
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崇 原川
Takashi Harakawa
崇 原川
浩 幡野
Hiroshi Hatano
浩 幡野
安雄 加幡
Yasuo Kahata
安雄 加幡
上田　隆司
Takashi Ueda
隆司 上田
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Toshiba Corp
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Toshiba Corp
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots

Abstract

PROBLEM TO BE SOLVED: To achieve a multi-turn of stator coil without increasing the size of a revolving-armature even when the coil width is narrow.SOLUTION: The stator coil has a first turn, a second turn and a step-up portion. The first turn includes a curved portion and a straight portion laid on a first step around an iron core. The second turn includes a curved portion and a straight portion laid on a second step around the iron core. The step-up portion allows the straight portion of the first turn to step up to the straight portion of the second turn linearly connecting therebetween as viewed from an axial direction of the first and second turn.

Description

本発明の実施形態は、固定子コイル及び回転電機に関する。   Embodiments described herein relate generally to a stator coil and a rotating electrical machine.

発電プラントなどで使用される回転電機の固定子コイルは、例えば固定子鉄心に設けられた隣り合う一組のスロット内に収容された状態で配置されている。固定子コイルは、複数のターン数を有するときには、２ターン目以降では前のターンの端部を段上げすることによって、前のターンと次のターンとが接続される。   A stator coil of a rotating electrical machine used in a power plant or the like is arranged in a state of being accommodated in a pair of adjacent slots provided in a stator core, for example. When the stator coil has a plurality of turns, the previous turn and the next turn are connected by raising the end of the previous turn after the second turn.

上述した段上げは、例えば亀甲コイルの端部でターン間に緩やかな勾配をつけることで行う場合がある。また、薄い平角導体を巻回するときの段上げは、コイル端部で平角導体一層分の勾配をつけることによって行う場合もある。   The step-up described above may be performed, for example, by providing a gentle gradient between turns at the end of the turtle shell coil. Further, the stepping up when winding a thin flat conductor may be performed by providing a gradient of one flat conductor at the end of the coil.

特開２０１２−１４３０６８号公報JP 2012-143068 A 特開２０１１−２５９５６６号公報JP 2011-259666 A

しかしながら、前者の段上げ構造は、固定子コイル本体のコイル幅が狭い場合、素線を束ねた素線導体に対して、成形時に、３次元的な曲げ応力が強く加わることになるため、素線導体から素線がばらけやすくなる結果を招く。この対策としては、コイル幅を広くして段上げを緩やかにするために、回転電機の体格を大きくする必要がある。   However, in the former stepped-up structure, when the coil width of the stator coil body is narrow, a three-dimensional bending stress is strongly applied to the element conductor that bundles the elements at the time of molding. As a result, the strands are easily separated from the wire conductor. As a countermeasure, it is necessary to increase the size of the rotating electrical machine in order to widen the coil width and loosen the steps.

一方、後者の段上げ構造は、固定子コイル本体のコイル幅が狭い場合、段上げ部分で素線導体どうしが物理的に干渉しないようにするために、やはり、回転電機の体格を大きくする必要がある。   On the other hand, in the latter stepped structure, when the coil width of the stator coil body is narrow, it is necessary to increase the size of the rotating electrical machine so that the wire conductors do not physically interfere with each other at the stepped portion. There is.

そこで、本発明が解決しようとする課題は、コイル幅が狭い場合でも回転電機の体格を大きくすることなくマルチターンを実現できる固定子コイル及び回転電機を提供することである。   Therefore, the problem to be solved by the present invention is to provide a stator coil and a rotating electrical machine that can realize multi-turn without increasing the size of the rotating electrical machine even when the coil width is narrow.

実施の形態の固定子コイルは、第１のターン部、第２のターン部及び段上げ部を備えている。第１のターン部は、鉄心の周りの１段目を周回する曲線部分と直線部分とを含む。第２のターン部は、前記鉄心の周りの２段目を周回する曲線部分と直線部分とを含む。段上げ部は、第１のターン部の直線部分と第２のターン部の直線部分とを前記第１及び第２のターン部の軸心方向からみて直線的に接続して段上げする。   The stator coil according to the embodiment includes a first turn part, a second turn part, and a step-up part. The first turn portion includes a curved portion and a straight portion that go around the first stage around the iron core. The second turn portion includes a curved portion and a straight portion that go around the second stage around the iron core. The stepped-up portion steps up by linearly connecting the straight portion of the first turn portion and the straight portion of the second turn portion as viewed from the axial direction of the first and second turn portions.

本実施形態に係る固定子コイルを備えた回転電機の構造を概略的に示す断面図。Sectional drawing which shows schematically the structure of the rotary electric machine provided with the stator coil which concerns on this embodiment. 図１の固定子コイルの周辺の構造を示す断面図。Sectional drawing which shows the structure of the periphery of the stator coil of FIG. 図２のＡ−Ａ断面図。AA sectional drawing of FIG. 図２の固定子コイルを示す斜視図。The perspective view which shows the stator coil of FIG. 図４の固定子コイルの平面図。The top view of the stator coil of FIG. 図４の固定子コイルの正面図。The front view of the stator coil of FIG. 図２のＢ−Ｂ断面図。BB sectional drawing of FIG. 比較例１の固定子コイルの構造を示す断面図。Sectional drawing which shows the structure of the stator coil of the comparative example 1. FIG. 比較例２の固定子コイルの周辺の構造を示す断面図。Sectional drawing which shows the structure around the stator coil of the comparative example 2. FIG. 比較例３の固定子コイルの周辺の構造を示す断面図。Sectional drawing which shows the structure around the stator coil of the comparative example 3. FIG. 比較例４の固定子コイルの周辺の構造を示す断面図。Sectional drawing which shows the structure of the periphery of the stator coil of the comparative example 4.

以下、実施の形態を図面に基づき説明する。
図１に示すように、本実施形態に係る回転電機１０は、例えば発電プラントで用いられる発電機や電動機などである。回転電機１０は、固定子（ステータ）８、回転子（ロータ）１５などを備えている。なお、回転電機１０は、回転子１５の回転子軸１６の両端にそれぞれ対称的に設けられた例えばファン１７や通風ダクトを備えた冷却機構などを有している。 Hereinafter, embodiments will be described with reference to the drawings.
As shown in FIG. 1, the rotary electric machine 10 which concerns on this embodiment is a generator, an electric motor, etc. which are used in a power plant, for example. The rotating electrical machine 10 includes a stator (stator) 8, a rotor (rotor) 15, and the like. The rotating electrical machine 10 includes, for example, a cooling mechanism including a fan 17 and a ventilation duct provided symmetrically at both ends of the rotor shaft 16 of the rotor 15.

回転子軸１６は、固定子８を含む構造部分に軸受機構を介して支持されている。回転子１５は、回転子軸１６と一体的に設けられた回転子鉄心１２及び回転子コイル１４を備えている。一方、固定子８は、固定子鉄心５と固定子コイル７とを備えている。また、固定子８には、図２に示すように、外側間隔片２５、鉄心押え板２６、遮蔽板２７なども設けられている。鉄心押え板２６は、外側間隔片２５を介して、回転子１５の軸方向から固定子鉄心５を挟持する。遮蔽板２７は、固定子鉄心５からの磁束の漏れを遮蔽する。   The rotor shaft 16 is supported by a structural portion including the stator 8 via a bearing mechanism. The rotor 15 includes a rotor core 12 and a rotor coil 14 that are integrally provided with the rotor shaft 16. On the other hand, the stator 8 includes a stator core 5 and a stator coil 7. Further, as shown in FIG. 2, the stator 8 is also provided with an outer spacing piece 25, an iron core pressing plate 26, a shielding plate 27, and the like. The iron core holding plate 26 sandwiches the stator iron core 5 from the axial direction of the rotor 15 via the outer spacing piece 25. The shielding plate 27 shields leakage of magnetic flux from the stator core 5.

固定子鉄心５は、例えば扇形に打ち抜かれた複数の電磁鋼板を環状に配置すると共に、図２に示すように、複数の電磁鋼板を回転子１５の軸方向に積層して構成されている。固定子鉄心５には、図３に示すように、固定子コイル７を収容するための複数のスロット１８が、回転子１５の周方向に分散して設けられている。   The stator core 5 is configured by, for example, arranging a plurality of magnetic steel plates punched in a fan shape in an annular shape and laminating a plurality of magnetic steel plates in the axial direction of the rotor 15 as shown in FIG. As shown in FIG. 3, the stator core 5 is provided with a plurality of slots 18 for accommodating the stator coils 7 distributed in the circumferential direction of the rotor 15.

個々の固定子コイル７は、図３に示すように、隣り合う一組のスロット１８内にまたがった状態で収容される。固定子コイル７の収容されたスロット１８は、その開口部側から楔１９を打ち込まれて閉じられる。なお、固定子コイル７は、図３に示すように、例えば絶縁被覆の施された複数の素線２０ａを束ねて成形した素線導体２０と、この素線導体２０の外周に、マイカテープなどを多重巻回して形成される絶縁層２１と、この絶縁層２１のさらに外周にいわゆる半導電性テープなどを巻回して形成される電界緩和層（低抵抗コロナ防止層）２２などと、から構成されている。   As shown in FIG. 3, the individual stator coils 7 are accommodated in a pair of adjacent slots 18. The slot 18 in which the stator coil 7 is accommodated is closed by driving a wedge 19 from the opening side. As shown in FIG. 3, the stator coil 7 includes, for example, a strand conductor 20 formed by bundling a plurality of strands 20 a having an insulating coating, and a mica tape or the like on the outer periphery of the strand conductor 20. And an electric field relaxation layer (low-resistance corona prevention layer) 22 formed by winding a so-called semiconductive tape around the outer periphery of the insulating layer 21 and the like. Has been.

固定子コイル７では、例えば幅７ｍｍ、高さ２ｍｍの複数の素線２０ａを、より合わせる素線転位が施され、例えば素線２０ａを２列１２段（図３では２列８段を例示）に束ねた幅１４ｍｍ×２４ｍｍの素線導体（素線束）２０が構成されている。さらに、固定子コイル７は、この素線導体２０の外周に上述した絶縁処理を施し、図４、図５に示すように、高さ７２ｍｍ（２４ｍｍ×３）となる２ターンのレーストラック形状に成形されている。   In the stator coil 7, for example, a strand dislocation for aligning a plurality of strands 20 a having a width of 7 mm and a height of 2 mm is applied. A strand conductor (strand bundle) 20 having a width of 14 mm × 24 mm is formed. Further, the stator coil 7 is subjected to the above-described insulation treatment on the outer periphery of the strand conductor 20 to form a two-turn racetrack shape having a height of 72 mm (24 mm × 3) as shown in FIGS. Molded.

より具体的には、固定子コイル７は、図４〜図７に示すように、第１のターン部３１、第２のターン部３２、段上げ部（第１の段上げ部）３３、第２の段上げ部３４、コイルエンド部３５、コイルエンド部３６を主に備えている。第１のターン部３１は、固定子鉄心５の周りの１段目を周回する曲線部分３１ａと直線部分３１ｂとを有している。第２のターン部３２は、固定子鉄心５の周りの２段目を周回する曲線部分３２ａと直線部分３２ｂとを有している。   More specifically, as shown in FIGS. 4 to 7, the stator coil 7 includes a first turn part 31, a second turn part 32, a step-up part (first step-up part) 33, 2 stepped-up portions 34, a coil end portion 35, and a coil end portion 36 are mainly provided. The first turn part 31 has a curved part 31 a and a straight part 31 b that go around the first stage around the stator core 5. The second turn portion 32 has a curved portion 32 a and a straight portion 32 b that go around the second stage around the stator core 5.

段上げ部３３は、図４〜図７に示すように、第１及び第２のターン部３１、３２の軸心方向（スロット１８の深さ方向）からみて、第１のターン部３１の直線部分３１ｂと第２のターン部３２の直線部分３２ｂとを直線的（ストレート）に接続して段上げする。詳述すると、段上げ部３３は、第１のターン部３１の直線部分３１ｂの終端箇所３１ｃと第２のターン部３２の直線部分３２ｂの先端箇所３２ｃとを前述したように直線的に接続して段上げする。つまり、段上げ部３３は、３次元的な曲げ（ひねり）を加えることなく、２次元的な高さ方向（スロットの深さ方向）への曲げによって、第１のターン部３１と第２のターン部３２とを接続する。   As shown in FIGS. 4 to 7, the stepped-up portion 33 is a straight line of the first turn portion 31 when viewed from the axial center direction (depth direction of the slot 18) of the first and second turn portions 31 and 32. The portion 31b and the straight portion 32b of the second turn portion 32 are connected in a straight line (straight) to be raised. More specifically, the step-up portion 33 linearly connects the end portion 31c of the straight portion 31b of the first turn portion 31 and the tip portion 32c of the straight portion 32b of the second turn portion 32 as described above. Step up. That is, the stepped-up portion 33 is bent in the two-dimensional height direction (the depth direction of the slot) without applying a three-dimensional bending (twisting). The turn part 32 is connected.

図４〜図６に示すように、一方のコイルエンド部３５は、固定子コイル本体の３段目に位置する直線部分３５ａを有している。他方のコイルエンド部３６は、固定子コイル本体の１段目に位置する直線部分３６ａを有している。すなわち、コイルエンド部３６の直線部分３６ａは、第１のターン部３１の直線部分３１ｂと直線的に接続されている。第２の段上げ部３４は、第１及び第２のターン部３１、３２の軸心方向からみて、第２のターン部３２の直線部分３２ｂとコイルエンド部３５の直線部分３５ａとを直線的に接続して段上げする。   As shown in FIGS. 4-6, one coil end part 35 has the linear part 35a located in the 3rd step | paragraph of a stator coil main body. The other coil end portion 36 has a straight portion 36a located at the first stage of the stator coil body. That is, the straight portion 36 a of the coil end portion 36 is linearly connected to the straight portion 31 b of the first turn portion 31. The second step-up portion 34 linearly connects the straight portion 32 b of the second turn portion 32 and the straight portion 35 a of the coil end portion 35 as viewed from the axial direction of the first and second turn portions 31 and 32. Connect to and step up.

また、段上げ部（第１の段上げ部）３３及び第２の段上げ部３４は、図２に示すように、回転子１５（回転子軸１６）の径方向からみて、固定子鉄心５との重なりを避ける位置に設けられている。さらに、段上げ部３３及び第２の段上げ部３４は、図２に示すように、回転子１５の径方向からみて、遮蔽板２７上の回転子１５側に最も近い位置で曲げられた曲げ部２７ａの位置よりも、固定子鉄心５側から遠ざかる位置に設けられている。また、段上げ部３３及び第２の段上げ部３４は、図２に示すように、回転子１５から遠ざかる方向に段上げされている。   Further, as shown in FIG. 2, the step-up portion (first step-up portion) 33 and the second step-up portion 34 are formed in the stator core 5 as viewed from the radial direction of the rotor 15 (rotor shaft 16). It is provided at a position that avoids overlapping. Further, as shown in FIG. 2, the stepped-up portion 33 and the second stepped-up portion 34 are bent at a position closest to the rotor 15 side on the shielding plate 27 when viewed from the radial direction of the rotor 15. It is provided at a position farther from the stator core 5 side than the position of the portion 27a. Further, as shown in FIG. 2, the step-up unit 33 and the second step-up unit 34 are stepped up in a direction away from the rotor 15.

ここで、このように構成された本実施形態の固定子コイル７と比較例１〜４の固定子コイル４７、５７、６７、７７とを比較する。図８は、比較例１の固定子コイル４７を、図７に示すＢ−Ｂ断面図と同じ方向からみた断面図であり、また、図９は、比較例２に係る１ターンの固定子コイル５７の周辺の構造を示す断面図である。さらに、図１０は、回転子１５の径方向からみて、段上げ部６３、６４が、固定子鉄心５と重なる位置に設けられた比較例３の固定子コイル６７の周辺の構造を示す断面図（固定子鉄心を部分的に破断して示す図）である。また、図１１は、段上げ部７３、７４が、固定子鉄心５へ近付く方向に段上げされた比較例４の固定子コイル７７の周辺の構造を示す断面図である。   Here, the stator coil 7 of the present embodiment configured as described above and the stator coils 47, 57, 67, and 77 of Comparative Examples 1 to 4 are compared. 8 is a cross-sectional view of the stator coil 47 of Comparative Example 1 as viewed from the same direction as the BB cross-sectional view shown in FIG. 7, and FIG. 9 is a one-turn stator coil according to Comparative Example 2. 5 is a cross-sectional view showing a structure around 57. FIG. Further, FIG. 10 is a cross-sectional view showing a structure around the stator coil 67 of the comparative example 3 in which the stepped portions 63 and 64 are provided at positions where the stator core 5 overlaps when viewed from the radial direction of the rotor 15. FIG. 3 is a diagram showing a stator core partially broken. FIG. 11 is a cross-sectional view showing the structure around the stator coil 77 of the comparative example 4 in which the stepped portions 73 and 74 are stepped up in the direction approaching the stator core 5.

比較例１の固定子コイル４７では、図８に示すように、段上げ部４７ａが、点線箇所４７ｂにて固定子コイル本体の他の部位と物理的に干渉し、実際には、段上げを構成することができなかった。これに対して、本実施形態の固定子コイル７は、図４〜図７に示すように、段上げ部３３をいわゆるエッジワイズ方向に曲げる（段上げする）ことで、段上げ部３３と固定子コイル本体の他の部位との物理的干渉を回避することが可能となる。   In the stator coil 47 of Comparative Example 1, as shown in FIG. 8, the stepped-up portion 47a physically interferes with other portions of the stator coil main body at the dotted line portion 47b. Could not be configured. On the other hand, as shown in FIGS. 4 to 7, the stator coil 7 according to the present embodiment is fixed to the raised portion 33 by bending (raising) the raised portion 33 in a so-called edgewise direction. It is possible to avoid physical interference with other parts of the child coil body.

したがって、本実施形態の固定子コイル７によれば、素線導体２０を３次元的に曲げる工程がないため、成形時に、素線導体２０から素線２０ａがばらけ難くなり、成形性の向上を図ることができる。また、固定子コイル７によれば、コイル幅を広くして段上げを緩やかにする構成などを適用していないため、固定子コイルを内蔵する回転電機本体の体格が大きくなることなどを回避できる。   Therefore, according to the stator coil 7 of the present embodiment, since there is no step of bending the strand conductor 20 three-dimensionally, the strand 20a is not easily separated from the strand conductor 20 at the time of molding, thereby improving the moldability. Can be achieved. Moreover, according to the stator coil 7, since the structure which makes a coil width | variety wide and raises gradually is not applied, it can avoid that the physique of the rotary electric machine main body which incorporates a stator coil becomes large. .

また、比較例２の固定子コイル５７は、図８に示した段上げによる物理的干渉を回避するために、図９に示すように、ターン数を１ターンにした固定子コイルである。このため、複数のターン数を有する固定子コイルと比べ、コイルとしての仕様上の制約を受けることが考えられる。これに対して、本実施形態の固定子コイル７では、段上げによる物理的干渉を回避しつつマルチターンを実現できるので、例えば発電プラントでの仕様に適した製品を作製することなどが可能となる。   Further, the stator coil 57 of Comparative Example 2 is a stator coil having a turn number of 1 as shown in FIG. 9 in order to avoid physical interference due to the step-up shown in FIG. For this reason, compared with a stator coil having a plurality of turns, it is conceivable that the coil is subject to restrictions on specifications. On the other hand, the stator coil 7 according to the present embodiment can realize multi-turn while avoiding physical interference due to step-up, and thus, for example, it is possible to produce a product suitable for the specifications in the power plant. Become.

また、比較例３の固定子コイル６７は、図１０に示すように、回転子１５の径方向からみて、段上げ部６３、６４が、固定子鉄心５と重なる位置に設けられている。このため、固定子鉄心におけるスロットの深さを、固定子コイル７と比べて例えば１．５倍以上、深くする必要がある。したがって、スロット内への固定子コイル６７の組み込み性が低下しこの点において課題が生じることになる。   Further, as shown in FIG. 10, the stator coil 67 of Comparative Example 3 is provided with stepped portions 63 and 64 at positions where the stator core 5 overlaps when viewed from the radial direction of the rotor 15. For this reason, it is necessary to make the depth of the slot in the stator core deeper, for example, 1.5 times or more than the stator coil 7. Therefore, the assembling property of the stator coil 67 in the slot is lowered, and a problem arises in this respect.

一方、本実施形態の固定子コイル７は、段上げ部３３及び第２の段上げ部３４が、図２に示すように、回転子１５の径方向からみて、固定子鉄心５との重なりを避ける位置に設けられている。これにより、スロットを深くする形成する必要がなく、固定子コイル７の組み込み性を高めることができる。   On the other hand, in the stator coil 7 of the present embodiment, the stepped-up portion 33 and the second stepped-up portion 34 overlap with the stator core 5 when viewed from the radial direction of the rotor 15 as shown in FIG. It is provided at a position to avoid. Thereby, it is not necessary to form a deep slot, and the incorporation of the stator coil 7 can be improved.

さらに、比較例４の固定子コイル７７は、図１１に示すように、固定子鉄心５へ近付く方向に段上げ部７３、７４が段上げされている。比較例４の固定子コイル７７は、回転子１５（回転子軸１６）との物理的な干渉を避けるために、段上げ部７３、７４と回転子１５との間のギャップを大きくとる必要があり、例えば回転電機１０の体格を大きくする必要がある。   Furthermore, as shown in FIG. 11, the stator coil 77 of Comparative Example 4 has stepped-up portions 73 and 74 stepped up in a direction approaching the stator core 5. The stator coil 77 of Comparative Example 4 needs to have a large gap between the stepped-up portions 73 and 74 and the rotor 15 in order to avoid physical interference with the rotor 15 (rotor shaft 16). For example, it is necessary to increase the size of the rotating electrical machine 10.

これに対して、本実施形態の固定子コイル７は、図２に示すように、段上げ部３３及び第２の段上げ部３４が、回転子１５から遠ざかる方向に段上げされている。さらに、本実施形態の固定子コイル７は、図２に示すように、段上げ部３３及び第２の段上げ部３４が、前述したように、回転子１５の径方向からみて、遮蔽板２７上の回転子１５側に最も近い位置で曲げられた曲げ部２７ａの位置よりも、固定子鉄心５側から遠ざかる位置に設けられている。   In contrast, in the stator coil 7 of the present embodiment, as shown in FIG. 2, the stepped-up portion 33 and the second stepped-up portion 34 are stepped up in the direction away from the rotor 15. Further, as shown in FIG. 2, the stator coil 7 of the present embodiment has the stepped-up portion 33 and the second stepped-up portion 34 as described above with the shielding plate 27 as viewed from the radial direction of the rotor 15. It is provided at a position farther from the stator core 5 side than the position of the bent portion 27a bent at the position closest to the upper rotor 15 side.

これにより、本実施形態の固定子コイル７によれば、段上げ部３３、３４と、遮蔽板２７又は回転子１５と、の物理的な干渉を阻止しつつ、部品レイアウト上のスペースが有効に活用されるので、回転電機１０の体格を例えば大きくすることなどを回避できる。   As a result, according to the stator coil 7 of the present embodiment, the physical layout space is effectively prevented while preventing physical interference between the step-up portions 33 and 34 and the shielding plate 27 or the rotor 15. Since it is utilized, it is possible to avoid increasing the size of the rotating electrical machine 10, for example.

既述したように、本実施形態の固定子コイル７によれば、コイル幅が狭い場合でも回転電機１０の体格を大きくすることなく固定子鉄心５を周回するターン部のマルチターンを実現することができる。   As described above, according to the stator coil 7 of this embodiment, even when the coil width is narrow, the multi-turn of the turn part that circulates around the stator core 5 is realized without increasing the size of the rotating electrical machine 10. Can do.

以上、本発明のいくつかの実施形態を説明したが、これらの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら新規な実施形態は、その他の様々な形態で実施することが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。これらの実施形態やその変形例は、発明の範囲や要旨に含まれると共に、特許請求の範囲に記載された発明とその均等の範囲に含まれる。   As mentioned above, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

５…固定子鉄心、７…固定子コイル、８…固定子、１０…回転電機、１２…回転子鉄心、１４…回転子コイル、１５…回転子、１６…回転子軸、１８…スロット、２０…素線導体、２０ａ…素線、２７…遮蔽板、２７ａ…曲げ部、３１…第１のターン部、３１ａ，３２ａ…曲線部分、３１ｂ，３２ｂ，３５ａ，３６ａ…直線部分、３１ｃ…終端箇所、３２…第２のターン部、３２ｃ…先端箇所、３３…段上げ部（第１の段上げ部）、３４…第２の段上げ部、３５，３６…コイルエンド部。   DESCRIPTION OF SYMBOLS 5 ... Stator iron core, 7 ... Stator coil, 8 ... Stator, 10 ... Rotary electric machine, 12 ... Rotor iron core, 14 ... Rotor coil, 15 ... Rotor, 16 ... Rotor shaft, 18 ... Slot, 20 ... strand conductor, 20a ... strand, 27 ... shielding plate, 27a ... bent portion, 31 ... first turn portion, 31a, 32a ... curved portion, 31b, 32b, 35a, 36a ... straight portion, 31c ... termination point 32 ... 2nd turn part, 32c ... tip location, 33 ... Raised part (first raised part), 34 ... 2nd raised part, 35, 36 ... Coil end part.

Claims (6)

鉄心の周りの１段目を周回する曲線部分と直線部分とを含む第１のターン部と、
前記鉄心の周りの２段目を周回する曲線部分と直線部分とを含む第２のターン部と、
前記第１のターン部の直線部分と前記第２のターン部の直線部分とを前記第１及び第２のターン部の軸心方向からみて直線的に接続して段上げする段上げ部と、
を備える固定子コイル。 A first turn portion including a curved portion and a straight portion that go around the first stage around the iron core;
A second turn portion including a curved portion and a straight portion around the second stage around the iron core;
A stepped-up portion that straightly connects the straight portion of the first turn portion and the straight portion of the second turn portion as viewed from the axial direction of the first and second turn portions;
A stator coil comprising: 前記段上げ部は、回転子の径方向からみて、前記鉄心との重なりを避ける位置に設けられている、
請求項１記載の固定子コイル。 The stepped-up portion is provided at a position that avoids overlapping with the iron core as seen from the radial direction of the rotor,
The stator coil according to claim 1. 前記回転子の径方向からみて、前記鉄心からの磁束の漏れを遮蔽する遮蔽板上の、前記回転子側に最も近い位置で曲げられた曲げ部の位置よりも、前記段上げ部は、前記鉄心側から遠ざかる位置に設けられている、
請求項１又は２記載の固定子コイル。 The stepped-up part is more than the bent part bent at the position closest to the rotor side on the shielding plate that shields leakage of magnetic flux from the iron core as viewed from the radial direction of the rotor. It is provided at a position away from the iron core side,
The stator coil according to claim 1 or 2. 前記段上げ部は、前記回転子から遠ざかる方向に段上げされている、
請求項１ないし３のいずれか１項に記載の固定子コイル。 The raised portion is raised in a direction away from the rotor,
The stator coil according to any one of claims 1 to 3. ３段目に位置する直線部分を含んだコイルエンド部と、
前記第２のターン部の直線部分と前記コイルエンド部の直線部分とを前記第１及び第２のターン部の軸心方向からみて直線的に接続して段上げする第２の段上げ部と、
をさらに備える請求項１ないし４のいずれか１項に記載の固定子コイル。 A coil end portion including a linear portion located in the third stage;
A second stepped-up portion that straightly connects the straight portion of the second turn portion and the straight portion of the coil end portion as viewed from the axial direction of the first and second turn portions; ,
The stator coil according to any one of claims 1 to 4, further comprising: 請求項１ないし５のいずれか１項に記載の固定子コイルを備えた回転電機。   A rotating electrical machine comprising the stator coil according to any one of claims 1 to 5.
JP2013099080A 2013-05-09 2013-05-09 Stator coil and revolving-armature Pending JP2014220929A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5778247U (en) * 1980-10-29 1982-05-14
JP2001045688A (en) * 1999-05-27 2001-02-16 Tsubakimoto Chain Co Armature coil and method of manufacturing the same
JP2001238390A (en) * 2000-02-25 2001-08-31 Togo Seisakusho Corp Connecting metal fitting for coil of rotating machine, and coil unit coupled hereby
JP2005312277A (en) * 2004-04-26 2005-11-04 Denso Corp Concentrated winding stator coil of rotary electric machine
JP2010154693A (en) * 2008-12-25 2010-07-08 Aisin Aw Co Ltd Core insulating member for rotating electrical machine, and insulating structure of rotating electrical machine
JP2011259566A (en) * 2010-06-07 2011-12-22 Toyota Motor Corp Method of manufacturing stator
JP2012143068A (en) * 2010-12-28 2012-07-26 Denso Corp Stator of rotary electric machine and method of manufacturing the same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5778247U (en) * 1980-10-29 1982-05-14
JP2001045688A (en) * 1999-05-27 2001-02-16 Tsubakimoto Chain Co Armature coil and method of manufacturing the same
JP2001238390A (en) * 2000-02-25 2001-08-31 Togo Seisakusho Corp Connecting metal fitting for coil of rotating machine, and coil unit coupled hereby
JP2005312277A (en) * 2004-04-26 2005-11-04 Denso Corp Concentrated winding stator coil of rotary electric machine
JP2010154693A (en) * 2008-12-25 2010-07-08 Aisin Aw Co Ltd Core insulating member for rotating electrical machine, and insulating structure of rotating electrical machine
JP2011259566A (en) * 2010-06-07 2011-12-22 Toyota Motor Corp Method of manufacturing stator
JP2012143068A (en) * 2010-12-28 2012-07-26 Denso Corp Stator of rotary electric machine and method of manufacturing the same

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