JP2000069701A - Wave-wound coil of rotating machine, and its manufacture - Google Patents

Wave-wound coil of rotating machine, and its manufacture

Info

Publication number
JP2000069701A
JP2000069701A JP10237624A JP23762498A JP2000069701A JP 2000069701 A JP2000069701 A JP 2000069701A JP 10237624 A JP10237624 A JP 10237624A JP 23762498 A JP23762498 A JP 23762498A JP 2000069701 A JP2000069701 A JP 2000069701A
Authority
JP
Japan
Prior art keywords
conductor
coil
slot
crossover
transition
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.)
Granted
Application number
JP10237624A
Other languages
Japanese (ja)
Other versions
JP3823556B2 (en
Inventor
Toshiichi Kato
敏一 加藤
Original Assignee
Denso Corp
株式会社デンソー
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Denso Corp, 株式会社デンソー filed Critical Denso Corp
Priority to JP23762498A priority Critical patent/JP3823556B2/en
Publication of JP2000069701A publication Critical patent/JP2000069701A/en
Application granted granted Critical
Publication of JP3823556B2 publication Critical patent/JP3823556B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide the wave-wound coil of a rotating machine where the reduction of the space of the coil end of a plate-shaped angle crossover conductor type of wave-wound coil and reduction of resistance power loss is possible, and besides which is excellent in its cooling property and is easy of manufacture. SOLUTION: The wave-wound coil of a rotating machine comprises a slot conductor 21 whose coil conductor is made of a conductor in the shape of a thin plate and is inserted in a slot, and a crossover conductor 22 which connects the ends of a pair of slot conductors, and this crossover conductor 22 is made in angle form on the roughly peripheral face, and it is folded up at the tip (top) 22a of this crossover conductor 22 or it is provided with a step, whereby one half of the crossover conductor 22 is displaced by the amount of thickness in its thickness direction as compared with the other half. Furthermore, the crossover conductor 22 on the inside in diameter of the coil end is projected in axial direction of the core more than the crossover conductor 22 on the outside in diameter.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[0001]
【発明の属する技術分野】本発明は、回転電機の波巻き
巻線及びその製造方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wave winding of a rotary electric machine and a method of manufacturing the same.
【0002】[0002]
【従来の技術】モータ・発電機等の回転電機の固定子巻
線や回転子巻線の巻装方法として、1磁極に所定巻数の
導体を巻装し、巻装終了後、次の磁極に移る集中巻き巻
装方式と、導体を波状に巻装していく波巻き巻装方式と
が知られている。
2. Description of the Related Art As a method for winding a stator winding or a rotor winding of a rotating electric machine such as a motor or a generator, a predetermined number of conductors are wound around one magnetic pole, and after the winding is completed, the next magnetic pole is wound. There are known a concentrated winding method and a wave winding method in which a conductor is wound in a wave shape.
【0003】[0003]
【発明が解決しようとする課題】しかしながら、集中巻
きの場合、巻装を磁極毎に行っていくため製作に時間が
かかる。また、波巻きの場合、回転電機に広く使用され
ている三相コイルを巻装する場合、巻装作業が煩雑とな
り、更に巻装作業上、大断面積のコイル導体を使用する
のが困難であるため、コイル導体の抵抗電力損失が大き
く、コイル導体のスロット占積率の向上も簡単ではなか
った。更に、コイルエンドが大きくなってその合計導体
長が増加し、コイルエンドにおける抵抗電力損失が増大
するという問題もあった。
However, in the case of concentrated winding, since winding is performed for each magnetic pole, it takes a long time to manufacture. Also, in the case of wave winding, when winding a three-phase coil widely used in a rotating electric machine, the winding operation becomes complicated, and it is difficult to use a coil conductor having a large cross-sectional area in the winding operation. Therefore, the resistance power loss of the coil conductor is large, and it is not easy to improve the slot space factor of the coil conductor. Further, there is a problem that the coil end becomes large, the total conductor length increases, and the resistance power loss at the coil end increases.
【0004】波巻きにおけるこれらの問題を解決するた
めに、本発明者らは、コイル導体を細板状導体により形
成し、スロット内に挿入される往き導体部の端部と還り
導体部の端部とを接続する渡り導体部を略周面上にて山
形に形成し、この渡り導体部の先端部(山頂部)にて折
り重ねるか又は段差を設けることにより、渡り導体部の
一半部を他半部に比較してその厚さ方向に厚さ分だけ変
位させた構成のコイルエンドをもつ回転電機の波巻き巻
線構造(以下、板状山形渡り導体式波巻きコイルとい
う)を開発した。
In order to solve these problems in wave winding, the present inventors formed a coil conductor by a thin plate-shaped conductor, and formed an end of a forward conductor inserted into a slot and an end of a return conductor. The transition conductor portion connecting the first and second portions is formed in a mountain shape on the substantially peripheral surface, and the transition conductor portion is folded or provided with a step at the front end portion (peak portion), thereby forming a half of the transition conductor portion. We have developed a wave winding structure for a rotating electrical machine that has a coil end that is displaced by the thickness in the thickness direction compared to the other half (hereinafter, referred to as a plate-shaped chevron conductor wave winding coil). .
【0005】ところが、この板状山形渡り導体式波巻き
コイルのコイルエンドは、各渡り導体部が極めて高密度
に重なり合うので、放熱性に劣るという問題があった。
また、渡り導体部のピッチ(周方向幅)は径内側へ移行
するにつれて短縮する必要があるが、このような渡り導
体部のピッチ調整は渡り導体部の長さの短縮を必要と
し、コイル導体の折り曲げ作成作業が煩雑であった。
However, in the coil end of the plate-shaped chevron-shaped transition conductor type wave winding coil, there is a problem that heat dissipation is inferior because the transition conductors overlap at a very high density.
Also, the pitch (circumferential width) of the transition conductor portion needs to be reduced as it moves toward the inside of the radius, but such pitch adjustment of the transition conductor portion requires a reduction in the length of the transition conductor portion, and the coil conductor Was complicated.
【0006】本発明は上記問題点に鑑みなされたもので
あり、上記板状山形渡り導体式波巻きコイルのコイルエ
ンドのスペースや抵抗電力損失の低減が可能であり、し
かもその冷却性に優れ、かつ、作成が容易な回転電機の
波巻き巻線及びその巻装方法を提供することをその目的
としている。
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is possible to reduce the space at the coil end and the resistance power loss of the above-mentioned plate-shaped chevron-shaped crossover conductor type winding coil, and furthermore, it is excellent in its cooling performance. Further, it is an object of the present invention to provide a wave winding of a rotating electrical machine and a winding method thereof which are easy to make.
【0007】[0007]
【課題を解決するための手段】本発明の回転電機の波巻
き巻線は、上述した板状山形渡り導体式波巻きコイル構
造を有するので、あらかじめ成形したコイルをスロット
に挿入するだけで巻装を完了することができ、巻装作業
が容易となる。また、巻装作業中に湾曲などのコイル導
体塑性変形作業がないので大断面積のコイル導体を使用
することができ、コイル導体のスロット占積率も向上す
ることができ、更に、コイルエンドの合計導体長の短縮
も実現できるのでコイルの抵抗電力損失を減少すること
ができる。
Since the wave winding of the rotating electric machine of the present invention has the above-mentioned plate-shaped chevron-shaped crossover conductor type wave winding coil structure, the winding is performed only by inserting a preformed coil into the slot. Can be completed, and the winding operation becomes easy. Also, since there is no coil conductor plastic deformation work such as bending during the winding work, a coil conductor having a large cross-sectional area can be used, and the slot space factor of the coil conductor can be improved. Since the total conductor length can be reduced, the resistance power loss of the coil can be reduced.
【0008】更に、コイルエンドの必要スペースも従来
の波巻き巻線に比較して格段に縮小することができる。
更に本構成では、径方向に積層される複数の渡り導体部
の軸方向長さを異なるようにしたので、渡り導体部、特
に径方向中央部に位置する渡り導体部の露出表面積(他
の渡り導体部と重ならない部分の表面積)を増大するこ
とができ、その冷却性を向上することができる。
Further, the required space of the coil end can be remarkably reduced as compared with the conventional wave winding.
Further, in the present configuration, since the axial lengths of the plurality of transition conductors laminated in the radial direction are made different, the exposed surface area of the transition conductor, particularly the transition conductor located at the center in the radial direction (other transition surface areas). The surface area of the portion that does not overlap with the conductor portion) can be increased, and the cooling performance can be improved.
【0009】請求項2記載の構成によれば請求項1記載
の回転電機の波巻き巻線において更に、各渡り導体部は
細板状導体を折り曲げてなる折り曲げ端部を軸方向先端
部にそれぞれ一個づつ有する構造(折り曲げ構造)を採
用するので、上記板状山形渡り導体式波巻きコイルの渡
り導体部を簡単に作製することができる。なお、上記板
状山形渡り導体式波巻きコイルの渡り導体部は、上記折
り曲げ構造の他に、渡り導体部の軸方向先端部にて径方
向へ径方向へ約渡り導体部の厚さ分だけ変位する構造
(以下、段差構造という)のものを採用してもよい。
According to a second aspect of the present invention, in the wave winding of the rotating electric machine according to the first aspect, each of the crossover conductors has a bent end formed by bending a thin plate-shaped conductor at an axial end. Since the structure having one piece at a time (bending structure) is adopted, the crossover conductor portion of the plate-shaped chevron crossover-type wave-wound coil can be easily manufactured. Note that, in addition to the bent structure, the transition conductor portion of the plate-shaped chevron transition conductor-type wave-wound coil has a thickness corresponding to the thickness of the transition conductor portion in the radial direction at the axial end portion of the transition conductor portion in the radial direction. A displaceable structure (hereinafter, referred to as a step structure) may be employed.
【0010】請求項3記載の構成によれば請求項1また
は2記載の回転電機の波巻き巻線において更に、各渡り
導体部は互いに等しい長さを有する。このようにすれ
ば、波巻き巻線すなわちコイル製造作業を簡素化するこ
とができる。すなわち、コイルエンドにて径方向に隣接
する二つの渡り導体部のうち、径内側の渡り導体部のピ
ッチすなわち周方向幅Liは、渡り導体部の厚さをt、
径内側の渡り導体部のコア中心からの半径をrとした場
合、径外側の渡り導体部のピッチすなわち周方向幅Lo
よりも、r/(r+t)の割合で短くなっている。とこ
ろが本構成では、各渡り導体部の長さは等しいので、そ
の結果、径内側の渡り導体部は径外側の渡り導体部より
も軸方向に突出することになる。
According to a third aspect of the present invention, in the wave winding of the rotating electric machine according to the first or second aspect, each of the crossover conductor portions has an equal length. By doing so, it is possible to simplify the operation of manufacturing the wave winding, that is, the coil. That is, the pitch of the radially inner transitional conductor portion, that is, the circumferential width Li, of the two transitional conductor portions radially adjacent to each other at the coil end, the thickness of the transitional conductor portion is t,
When the radius of the radially inner transition conductor portion from the core center is r, the pitch of the radially outer transition conductor portion, that is, the circumferential width Lo
Than at the rate of r / (r + t). However, in this configuration, since the lengths of the transition conductors are equal, as a result, the radially inner transitional conductor projects more axially than the radially outer transitional conductor.
【0011】換言すれば、スロット挿入前に各渡り導体
部を等ピッチで作成したとしても、径内側の渡り導体部
の軸方向先端部を径外側の渡り導体部のそれに比較して
軸方向へ突出させることにより渡り導体部のピッチすな
わち周方向幅を再調整して問題なくスロット導体部をス
ロットへ挿入することができる。したがって、この実施
例によれば、請求項1記載のコイルエンド冷却効果の向
上の他に製造作業の簡素化を実現することができる。
In other words, even if each transition conductor is formed at an equal pitch before the slot is inserted, the axial end of the radially inner transitional conductor is more axially moved than the radially outer transitional conductor. By projecting, the pitch of the crossover conductor portion, that is, the circumferential width can be readjusted, and the slot conductor portion can be inserted into the slot without any problem. Therefore, according to this embodiment, in addition to the improvement of the coil end cooling effect described in claim 1, simplification of the manufacturing operation can be realized.
【0012】請求項4記載の製造方法は、上述した請求
項3記載の等長の渡り導体部をもつ波巻き巻線の製造方
法であって、各渡り導体部を等ピッチで形成した後で、
かつ、各渡り導体部をスロットに挿入する前に、各スロ
ット導体部がそれぞれスロット内で径方向に隣接可能な
ように渡り導体部の塑性変形により各渡り導体部のピッ
チを調整するので、簡単に上記板状山形渡り導体式波巻
きコイルを作成することができる。
According to a fourth aspect of the present invention, there is provided a method of manufacturing a wave-wound winding having equal-length transition conductors according to the third aspect of the present invention. ,
Also, before inserting each transition conductor into the slot, the pitch of each transition conductor is adjusted by plastic deformation of the transition conductor so that each slot conductor can be adjacent in the slot in the radial direction. In addition, the above-described plate-shaped chevron-shaped conductor-type wave-wound coil can be manufactured.
【0013】なお、上記ピッチ調整は、渡り導体部の塑
性変形で行ってもよく、弾性変形で行ってもよい。ま
た、スロット導体部の一端側の渡り導体部の軸方向先端
部と、スロット導体部の他端側の渡り導体部の軸方向先
端部とを互いに逆向きに引っ張って調整することができ
る。なお、本構成のほかに渡り導体部の軸方向先端部を
適切な角度に一挙に折り曲げて作成してもよい。
The pitch adjustment may be performed by plastic deformation or elastic deformation of the crossover conductor. Further, it is possible to adjust the axial end portion of the transition conductor portion on one end side of the slot conductor portion and the axial end portion of the transition conductor portion on the other end side of the slot conductor portion in opposite directions. In addition, in addition to the present configuration, the cross-section may be formed by bending the axial end of the conductor portion at an appropriate angle.
【0014】[0014]
【発明を実施するための態様】本発明の好適な態様を以
下の実施例により説明する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described with reference to the following examples.
【0015】[0015]
【実施例1】本発明の波巻き巻線を固定子巻線に適用し
た三相モータの実施例を説明する。図1はこのモータの
固定子の平面図を示し、図2は正面図を示し、図3〜図
10に固定子コイル作成手順を示し、図11はコイルエ
ンドの径外側に位置する渡り導体部21を示し、図12
はコイルエンドの径内側に位置する渡り導体部21を示
す。
Embodiment 1 An embodiment of a three-phase motor in which a wave winding of the present invention is applied to a stator winding will be described. FIG. 1 is a plan view of a stator of the motor, FIG. 2 is a front view, FIGS. 3 to 10 show a procedure for forming a stator coil, and FIG. 11 is a cross-over conductor located outside the coil end. 21 and FIG.
Indicates a crossover conductor portion 21 located radially inside the coil end.
【0016】1は薄板状の電極鋼板を積層した固定子コ
アで、内径側に開口する多数のスロットを有する。各ス
ロット内には、星型接続された三相二層波巻き型の固定
子コイル(以下、単にコイルともよぶ)2が巻装されて
おり、スロット入り口部には、コイルのスロットからの
飛出しを防止する板状のウエッジ4が嵌着されている。
また、スロットの内周部にはコイル2とコア1とを絶縁
するインシュレータ3が挿入されている。
Reference numeral 1 denotes a stator core formed by laminating thin plate-shaped electrode steel plates, and has a large number of slots opened on the inner diameter side. In each slot, a star-connected three-phase two-layer wave-wound stator coil (hereinafter, also simply referred to as a coil) 2 is wound. A plate-shaped wedge 4 for preventing protrusion is fitted.
An insulator 3 for insulating the coil 2 and the core 1 from each other is inserted into the inner periphery of the slot.
【0017】コイル2は、スロット内に挿入される直線
状のスロット導体部21と、スロット導体部21と一体
に形成される渡り導体部22とを有し、渡り導体部22
の両端は、2スロット挟んだ両側のスロットに挿入され
る一対のスロット導体部21の同一端部に個別に接続さ
れている。コイル2は、図1に示すように、三つの相コ
イル2a、2b、2cからなり、スロット導体部21
は、図3に示すように、各相コイル2a、2b、2cの
始端23〜25からみて離れる往き方向へ延在する往き
導体部21aと、各相コイル2a、2b、2cの始端2
3〜25からみて近づく還り方向へ延在する還り導体部
21bとからなる。したがって、スロット両側のコイル
エンド部2dは、正確にはスロット導体部21の両側の
端部と渡り導体部22とで構成され、各渡り導体部22
は、図1に示すように、スロット導体部21に対して周
方向へ斜めに折れ曲がっており、渡り導体部22の中央
部で折り曲げられて、その軸方向先端部で山形になって
いる。
The coil 2 has a linear slot conductor 21 inserted into the slot, and a transition conductor 22 formed integrally with the slot conductor 21.
Are individually connected to the same ends of a pair of slot conductors 21 inserted into slots on both sides sandwiching two slots. The coil 2 is composed of three phase coils 2a, 2b and 2c as shown in FIG.
As shown in FIG. 3, the starting conductor 21a extending in the traveling direction away from the starting ends 23 to 25 of the phase coils 2a, 2b, 2c, and the starting end 2 of the phase coils 2a, 2b, 2c.
And a return conductor portion 21b extending in the return direction approaching as viewed from 3 to 25. Therefore, the coil end portions 2d on both sides of the slot are, to be precise, composed of the end portions on both sides of the slot conductor portion 21 and the transition conductor portion 22.
As shown in FIG. 1, is bent obliquely in the circumferential direction with respect to the slot conductor 21, is bent at the center of the crossover conductor 22, and has a mountain shape at its axial end.
【0018】更に詳しく言えば軸方向先端部にて径方向
に折り重ねられて重なる折り曲げ端部22aを各一個づ
つ有する。したがって、渡り導体部22の軸方向先端部
22aのこの折り重ねにより、この渡り導体部22の両
端から延在する一対のスロット導体部21にその厚さに
等しい径方向変位が付与される。なお、渡り導体部22
の軸方向先端部22aを折り重ねる代わりに、塑性変形
により段差部を形成しても、同様に渡り導体部22の両
端から延在する一対のスロット導体部21にその厚さに
等しい径方向変位が付与することができる。そして、渡
り導体部22のこの軸方向先端部22aは隣接する渡り
導体部22とは径方向に重ならないので、上記径方向の
折り曲げ又は段差付与が支障なく実施できるようになっ
ている。
More specifically, each of the bent ends 22a is overlapped by being radially folded and overlapped at the axial end. Therefore, the folding of the axial end portion 22a of the crossover conductor portion 22 imparts a radial displacement equal to the thickness to the pair of slot conductor portions 21 extending from both ends of the crossover conductor portion 22. The transition conductor 22
Even if the step portion is formed by plastic deformation instead of folding the axial tip portion 22a of the axial direction, a pair of slot conductor portions 21 extending from both ends of the crossover conductor portion 22 are similarly displaced in the radial direction equal to the thickness. Can be given. Since the axial end portion 22a of the crossover conductor portion 22 does not overlap with the adjacent crossover conductor portion 22 in the radial direction, the bending in the radial direction or the provision of a step can be performed without any trouble.
【0019】以下、コイル2について更に詳しく説明す
る。コイル2は、図3に示すように、1スロットピッチ
ずつ離れて平行に配列された6本のコイル導体201〜
206を有し、コイル導体201、204が相コイル2
aを構成し、コイル導体203、206が相コイル2b
を構成し、コイル導体202、205が相コイル2cを
構成している。各コイル導体201〜206は固定子コ
ア1の径方向に薄く周方向に広い略角形断面形状を有し
ている。
Hereinafter, the coil 2 will be described in more detail. As shown in FIG. 3, the coil 2 has six coil conductors 201 to 201 arranged in parallel at a distance of one slot pitch.
206, and the coil conductors 201 and 204 are the phase coils 2
a, and the coil conductors 203 and 206 are phase coils 2b
And the coil conductors 202 and 205 constitute the phase coil 2c. Each of the coil conductors 201 to 206 has a substantially rectangular cross-sectional shape that is thin in the radial direction of the stator core 1 and wide in the circumferential direction.
【0020】また、第m(mは整数)番目のコイル導体
の第n(nは整数)番目のスロット導体部21は、第m
番目のコイル導体の第n−1番目又は第n+1番目のス
ロット導体部21が収容されるスロットに対して電気角
180度離れたスロット、すなわち、3スロットピッチ
離れたスロットに収容されている。なお、この3スロッ
トピッチ離れたスロットには、第m−3番目又は第m+
3番目のコイル導体のスロット導体部21とともに収容
される。
The n-th (n is an integer) slot conductor portion of the m-th (m is an integer) coil conductor is the m-th (m is an integer) coil conductor.
The first coil conductor is accommodated in a slot 180 electrical degrees away from the slot in which the (n-1) -th or (n + 1) -th slot conductor portion 21 is accommodated, that is, a slot separated by a 3-slot pitch. In addition, in the slots separated by the pitch of three slots, the (m−3) th or the (m +) th
It is housed together with the slot conductor portion 21 of the third coil conductor.
【0021】更に、6本のコイル導体201〜206の
各始端のうち、2、4、6番目の始端は互いに短絡され
て中性点とされ、残る1、3、5番目の始端は、三相星
型接続された各相コイル2a、2b、2cの端子をな
す。コイル導体201〜206の具体的な製造方法につ
いて図3〜図10にに示す作製手順を参照して説明す
る。
Further, among the starting ends of the six coil conductors 201 to 206, the second, fourth, and sixth starting ends are short-circuited to each other to be a neutral point, and the remaining first, third, and fifth starting ends are three. Terminals of the phase coils 2a, 2b, 2c connected in a phase star configuration. A specific method for manufacturing the coil conductors 201 to 206 will be described with reference to the manufacturing procedure shown in FIGS.
【0022】まず、図3に示すように、6本のコイル導
体201〜206を1スロットピッチずつ離れて平行に
配置する。スロット導体部21及び渡り導体部22はそ
れぞれ直線帯状に形成されており、渡り導体部22はス
ロット導体部21に対して適当な角度(ここでは約60
度)で斜設されている。なお、23はコイル導体201
の始端であり、24はコイル導体203の始端であり、
25はコイル導体205の始端であり、26はコイル導
体202の始端であり、27はコイル導体204の始端
であり、28はコイル導体206の始端である。
First, as shown in FIG. 3, six coil conductors 201 to 206 are arranged in parallel at intervals of one slot pitch. The slot conductor portion 21 and the transition conductor portion 22 are each formed in a linear band shape, and the transition conductor portion 22 has an appropriate angle (here, about 60
Degrees). 23 is a coil conductor 201
24 is a starting end of the coil conductor 203;
Reference numeral 25 denotes a start end of the coil conductor 205, 26 denotes a start end of the coil conductor 202, 27 denotes a start end of the coil conductor 204, and 28 denotes a start end of the coil conductor 206.
【0023】次に、図4に示すように、コイル導体20
1〜206の始端23〜28から数えて最初の6個の渡
り導体部22をその中央部(図3に破線で示す)で、最
初のスロット導体部21が下となるように(谷折りで)
折り曲げる。なお、図3において、各コイル導体201
〜206の始端23〜28から数えて最初のスロット導
体部21と次のスロット導体部21とは3スロットピッ
チ離れて形成されており、これによりコイル導体201
の二番目のスロット導体部21はコイル導体204の最
初のスロット導体部21の上に重なり、以下同様に、コ
イル導体202の二番目のスロット導体部21はコイル
導体205の最初のスロット導体部21の上に重なり、
コイル導体203の二番目のスロット導体部21はコイ
ル導体206の最初のスロット導体部21の上に重な
る。
Next, as shown in FIG.
The first six transition conductors 22 counted from the starting ends 23 to 28 of the first to second 206 are positioned at the center (indicated by a broken line in FIG. 3) so that the first slot conductor 21 is located below (by valley folding). )
Bend. In FIG. 3, each coil conductor 201
The first slot conductor portion 21 and the next slot conductor portion 21 counted from the starting ends 23 to 28 of the first to third slot conductors 206 to 206 are formed at a pitch of three slots apart from each other.
The second slot conductor 21 of the coil conductor 202 overlaps the first slot conductor 21 of the coil conductor 205, and so on. On top of
The second slot conductor 21 of the coil conductor 203 overlaps the first slot conductor 21 of the coil conductor 206.
【0024】次に、図5に示すように、コイル導体20
1〜206の始端23〜28から数えて二番目の6個の
渡り導体部22をその中央部(図4に破線で示す)で、
二番目のスロット導体部21が三番目のスロット導体部
21の上となるように(山折りで、すなわち最初の折り
曲げ方向と同一回転方向へ)折り曲げる。これによりコ
イル導体201の三番目のスロット導体部21はコイル
導体204の二番目のスロット導体部21の下に重な
り、以下同様に、コイル導体202の三番目のスロット
導体部21はコイル導体205の二番目のスロット導体
部21の下に重なり、コイル導体203の三番目のスロ
ット導体部21はコイル導体206の二番目のスロット
導体部21の下に重なる。これにより、三番目のスロッ
ト導体部21は最初のスロット導体部21とスロット内
で同じ深さ(最も深い位置)に無理なく収容される。
Next, as shown in FIG.
At the center (shown by a broken line in FIG. 4), the sixth six transition conductors 22 counted from the start ends 23 to 28 of the first to second 206 are shown.
The second slot conductor 21 is folded over the third slot conductor 21 (by mountain fold, that is, in the same rotational direction as the first folding direction). Thereby, the third slot conductor 21 of the coil conductor 201 overlaps with the second slot conductor 21 of the coil conductor 204, and similarly, the third slot conductor 21 of the coil conductor 202 The third slot conductor 21 of the coil conductor 203 overlaps below the second slot conductor 21 of the coil conductor 206. As a result, the third slot conductor 21 is accommodated at the same depth (the deepest position) within the slot as the first slot conductor 21 without difficulty.
【0025】以下、図6に示すように、順次、谷折り、
山折り、谷折りと同一回転方向へ折り曲げることによ
り、6本のコイル導体201〜206を各スロットに2
層に収容する。その結果、ロータ磁極数から1を引いた
回数だけ折り曲げることにより、各コイル導体201〜
206は一周することになり、スロット内に2層に2タ
ーン分のコイルが形成される。
Hereinafter, as shown in FIG.
By folding in the same rotation direction as the mountain fold and the valley fold, six coil conductors 201 to 206 are provided in each slot.
Housed in layers. As a result, the coil conductors 201 to 201 are bent by the number of times obtained by subtracting 1 from the number of rotor magnetic poles.
The coil 206 makes one round, and a coil for two turns is formed in two layers in the slot.
【0026】次に、図7に示すように、いままでと反対
回転方向へ(すなわち上記最初の2ターン形成の最後の
折り曲げが谷折りとなるので、再び谷折りで)折り曲げ
る。これにより、その後のスロット導体部21はスロッ
ト内で3、4層目に円滑に配置されることができる。以
下、図8に示すように、順次、谷折り、山折り、谷折り
と最初の2ターンと反対回転方向へ折り曲げることによ
り、6本のコイル導体201〜206を各スロットに4
層に収容する。その結果、再度、ロータ磁極数から1を
引いた回数だけ折り曲げることにより、各コイル導体2
01〜206は次の一周を行うことになり、スロット内
に4層に4ターン分のコイルが形成される。以下、必要
なターン数が上記と同じ手順で作製される。
Next, as shown in FIG. 7, the sheet is folded in the opposite rotation direction (ie, the last folding of the first two turns is a valley fold, so it is again a valley fold). Thus, the subsequent slot conductor 21 can be smoothly arranged in the third and fourth layers in the slot. Subsequently, as shown in FIG. 8, six coil conductors 201 to 206 are placed in each slot by sequentially bending in the opposite rotation direction to the valley fold, the mountain fold, the valley fold, and the first two turns.
Housed in layers. As a result, each coil conductor 2 is bent again by the number of times obtained by subtracting 1 from the number of rotor magnetic poles.
01 to 206 perform the next round, and coils for four turns are formed in four layers in the slot. Hereinafter, the required number of turns is produced in the same procedure as described above.
【0027】次に、所定ターンを作製した後、図8に示
すように、コイル導体201〜206の最終渡り導体部
22bは、いままでの渡り導体部22に対して約半分の
長さとされ、かつ、コイル導体204〜206の最終渡
り導体部22bはそれ以外の渡り導体部22及び最終渡
り導体部22bと線対称方向に斜設されている。その結
果、図10に示すように、コイル導体201、204の
最終渡り導体部22bの先端部は重なり、コイル導体2
02、205の最終渡り導体部22bの先端部は重な
り、コイル導体203、206の最終渡り導体部22b
の先端部は重なり、これら重なり部分を溶接することに
より、三相ステータコイルが形成されることになる。更
に具体的に説明すれば、図9に示すようにコイル導体2
01〜203の折り曲げを行い、その後、図10に示す
ようにコイル導体204〜206の折り曲げを行って、
上記重なりを形成し、溶接すればよい。
Next, after making a predetermined turn, as shown in FIG. 8, the final crossover conductor portion 22b of the coil conductors 201 to 206 has a length approximately half that of the conventional crossover conductor portion 22. Further, the final transition conductor portion 22b of each of the coil conductors 204 to 206 is obliquely arranged in a line symmetrical direction with the other transition conductor portions 22 and the final transition conductor portion 22b. As a result, as shown in FIG. 10, the end portions of the final crossover conductor portions 22b of the coil conductors 201 and 204 overlap, and the coil conductor 2
02 and 205, the leading end portions of the final transition conductor portions 22b overlap, and the final transition conductor portions 22b of the coil conductors 203 and 206 overlap.
Are overlapped, and by welding these overlapping portions, a three-phase stator coil is formed. More specifically, as shown in FIG.
01 to 203, and then the coil conductors 204 to 206 are bent as shown in FIG.
What is necessary is just to form the said overlap and to weld.
【0028】次に、上述のように作製されたコイル2を
固定子コア1の各スロットに挿入され、次にまたはスロ
ット挿入前にコイル導体202、204、206の始端
を短絡して中性点とする。以下、本実施例の要部を図1
1、図12を参照して以下に説明する。図11は、図2
に示すように径方向に5層に隣接するスロット導体部2
1及び渡り導体部22のうち、最も径外側のスロット導
体部21及び渡り導体部22を示し、図12は、最も径
内側のスロット導体部21及び渡り導体部22を示す。
Next, the coil 2 manufactured as described above is inserted into each slot of the stator core 1, and before or next to the slot insertion, the starting ends of the coil conductors 202, 204, 206 are short-circuited to neutral points. And FIG. 1 shows a main part of this embodiment.
1, will be described below with reference to FIG. FIG. 11 shows FIG.
As shown in the figure, the slot conductor portion 2 radially adjacent to the five layers
1 and the radially outermost slot conductor portion 21 and the radially outer transitional conductor portion 22, and FIG. 12 shows the radially innermost slotted conductor portion 21 and the radially outer conductor portion 22.
【0029】径内側の渡り導体部22(図12参照)の
ピッチすなわち周方向幅Liは、渡り導体部22の厚さ
をt、径内側の渡り導体部22のコア中心からの半径を
rとした場合、径外側の渡り導体部22のピッチすなわ
ち周方向幅Loよりも、r/(r+t)の割合で短くな
っている。この渡り導体部22の周方向幅の変更は、図
3〜図10の工程で渡り導体部22の周方向幅がすべて
等しいコイル2を作成後、スロット導体部21の両側の
渡り導体部22、22を治具で把持してスロット導体部
21の延在する方向へ互いに逆方向へ一挙に引っ張り、
これにより渡り導体部22の角度すなわちその周方向幅
を必要な値に調整すればよい。
The pitch of the radially inner transition conductor 22 (see FIG. 12), that is, the circumferential width Li, is such that t is the thickness of the transition conductor 22, and r is the radius of the radially inner transition conductor 22 from the center of the core. In this case, the pitch is shorter by r / (r + t) than the pitch of the radially outer transition conductor portion 22, that is, the circumferential width Lo. The circumferential width of the transition conductor 22 can be changed by creating the coil 2 in which the circumferential widths of the transition conductors 22 are all equal in the steps of FIGS. 22 is gripped with a jig and pulled at once in opposite directions to the direction in which the slot conductor portion 21 extends,
Thereby, the angle of the crossover conductor portion 22, that is, the circumferential width thereof may be adjusted to a required value.
【0030】その結果、各渡り導体部22の周方向幅は
それが挿入されるスロットのピッチに等しくなってスロ
ット導体部21のスロットロットへの円滑な挿入が可能
となり、更に径内側の渡り導体部22は径外側の渡り導
体部22よりも軸方向に突出することになるので、各渡
り導体部22の先端部は従来より良好に冷却空気流によ
り冷却されることになる。
As a result, the circumferential width of each transition conductor 22 is equal to the pitch of the slot into which it is inserted, so that the slot conductor 21 can be smoothly inserted into the slot lot. Since the portion 22 protrudes in the axial direction from the radially outer transition conductor portion 22, the tip end of each transition conductor portion 22 is cooled by the cooling air flow better than before.
【0031】なお、このピッチ調整は、渡り導体部22
の塑性変形で行ってもよく、弾性変形で行ってもよい。
すなわち、上記治具で両渡り導体部22、22をスロッ
ト導体部21の延在する方向へ引っ張りつつ、スロット
導体部21をスロットに挿入してもよい。
Note that this pitch adjustment is performed by the transition conductor portion 22.
May be performed by plastic deformation or elastic deformation.
That is, the slot conductor portion 21 may be inserted into the slot while pulling both the crossover conductor portions 22 in the direction in which the slot conductor portion 21 extends with the jig.
【0032】[0032]
【変形態様】まず、導体を複数本周方向に並べて1本の
コイル導体としてもよい。また、コイル導体201〜2
06はあらかじめ渡り導体部22をスロット導体部21
に対して斜設するのではなく、折り曲げ時に屈曲して渡
り導体部22としてもよい。
[Modification] First, a plurality of conductors may be arranged in the circumferential direction to form one coil conductor. In addition, the coil conductors 201 and 2
Reference numeral 06 designates the crossover conductor 22 in advance as the slot conductor 21.
Instead of being inclined, the connecting conductor 22 may be bent at the time of bending.
【0033】また、6本のコイル導体201〜206で
たとえば偶数ターン分のコイル(本発明でいうコイル
群)を作り、更に他の6本のコイル導体でたとえば偶数
ターン分のコイル(本発明でいうコイル群)を作り、こ
れらコイル群同士を半分の長さの渡り導体部22を重ね
て溶接する手法などにより接続してもよい。コイル導体
201と204、コイル導体202と205、コイル導
体203と206と上述したそれぞれの最終渡り導体部
で折り曲げて作製してから、図3から順にコイル成形し
てもよい。
Further, a coil for even number of turns (a coil group in the present invention) is formed by the six coil conductors 201 to 206, and a coil for even number of turns in the other six coil conductors (in the present invention). Coil group), and these coil groups may be connected to each other by, for example, a method in which the transition conductor portion 22 having a half length is overlapped and welded. The coil conductors 201 and 204, the coil conductors 202 and 205, the coil conductors 203 and 206, and the above-described final crossover conductors may be formed by bending and then coil-formed in order from FIG.
【0034】更に、コイル導体202、204、206
の始端を短絡する代わりにデルタ接続を行うことも可能
である。
Further, the coil conductors 202, 204, 206
It is also possible to make a delta connection instead of short-circuiting the start end of.
【図面の簡単な説明】[Brief description of the drawings]
【図1】 本発明の波巻き巻線を固定子巻線に適用した
三相モータの実施例における固定子の平面図である。
FIG. 1 is a plan view of a stator in an embodiment of a three-phase motor in which a wave winding of the present invention is applied to a stator winding.
【図2】 図1に示す固定子の正面図である。FIG. 2 is a front view of the stator shown in FIG.
【図3】 図1、図2に示す固定子コイルの作成手順を
示す工程図である。
FIG. 3 is a process diagram showing a procedure for producing the stator coil shown in FIGS. 1 and 2;
【図4】 図1、図2に示す固定子コイルの作成手順を
示す工程図である。
FIG. 4 is a process diagram showing a procedure for producing the stator coil shown in FIGS. 1 and 2;
【図5】 図1、図2に示す固定子コイルの作成手順を
示す工程図である。
FIG. 5 is a process chart showing a procedure for producing the stator coil shown in FIGS. 1 and 2;
【図6】 図1、図2に示す固定子コイルの作成手順を
示す工程図である。
FIG. 6 is a process diagram showing a procedure for producing the stator coil shown in FIGS. 1 and 2;
【図7】 図1、図2に示す固定子コイルの作成手順を
示す工程図である。
FIG. 7 is a process chart showing a procedure for producing the stator coil shown in FIGS. 1 and 2;
【図8】 図1、図2に示す固定子コイルの作成手順を
示す工程図である。
FIG. 8 is a process diagram showing a procedure for producing the stator coil shown in FIGS. 1 and 2;
【図9】 図1、図2に示す固定子コイルの作成手順を
示す工程図である。
FIG. 9 is a process diagram showing a procedure for producing the stator coil shown in FIGS. 1 and 2;
【図10】 図1、図2に示す固定子コイルの作成手順
を示す工程図である。
FIG. 10 is a process diagram showing a procedure for producing the stator coil shown in FIGS. 1 and 2;
【図11】 スロットの径外側に挿入されるスロット導
体部21及びそれから延在する渡り導体部22を示すコ
イル2の展開図である。
FIG. 11 is a development view of the coil 2 showing a slot conductor 21 inserted outside the slot and a crossover conductor 22 extending therefrom.
【図12】 スロットの径内側に挿入されるスロット導
体部21及びそれから延在する渡り導体部22を示すコ
イル2の展開図である。
FIG. 12 is a developed view of the coil 2 showing a slot conductor 21 inserted inside the slot radially and a crossover conductor 22 extending therefrom.
【符号の説明】[Explanation of symbols]
1は固定子コア、2はコイル、21はスロット導体部、
22は渡り導体部、22aは折り曲げ端部
1 is a stator core, 2 is a coil, 21 is a slot conductor,
22 is a crossover conductor, 22a is a bent end

Claims (4)

    【特許請求の範囲】[Claims]
  1. 【請求項1】コアの各スロットに交互に挿通される往き
    導体部及び還り導体部からなるスロット導体部と、前記
    スロット導体部と一体に形成されて前記往き導体部及び
    還り導体部の同一側端部を接続する渡り導体部とからな
    るコイル導体を有する回転電機の波巻き巻線において、 厚さ方向がコアの径方向となる姿勢で延設された細板状
    導体からそれぞれなる複数の前記渡り導体部を前記径方
    向に積層して構成されるコイルエンドを有し、 前記径方向に積層される複数の前記渡り導体部の軸方向
    長さは異なることを特徴とする回転電機の波巻き巻線。
    1. A slot conductor portion comprising a forward conductor portion and a return conductor portion alternately inserted into each slot of a core, and the same side of the forward conductor portion and the return conductor portion integrally formed with the slot conductor portion. In a wave winding of a rotating electric machine having a coil conductor composed of a crossover conductor portion connecting end portions, a plurality of thin plate-like conductors each extending from a thin plate-shaped conductor extending in a posture in which a thickness direction is a radial direction of a core. A coil end configured by laminating transition conductor portions in the radial direction, wherein a plurality of the transition conductor portions laminated in the radial direction have different axial lengths; Winding.
  2. 【請求項2】請求項1記載の回転電機の波巻き巻線にお
    いて、 各前記渡り導体部は、前記細板状導体を折り曲げてなる
    折り曲げ端部を軸方向先端部にそれぞれ一個づつ有する
    ことを特徴とする回転電機の波巻き巻線。
    2. The wave winding of a rotary electric machine according to claim 1, wherein each of the crossover conductor portions has a bent end portion formed by bending the thin plate-shaped conductor at an axial end portion. Characteristic wave winding of rotating electric machine.
  3. 【請求項3】請求項1または2記載の回転電機の波巻き
    巻線において、 各前記渡り導体部は互いに等しい長さを有することを特
    徴とする回転電機の波巻き巻線。
    3. The wave winding of a rotating electric machine according to claim 1, wherein each of the crossover conductor portions has an equal length.
  4. 【請求項4】請求項3記載の回転電機の波巻き巻線の製
    造方法において、 最終的に前記スロット内で径方向に隣接する各前記渡り
    導体部を等ピッチで形成した後で、かつ、前記各渡り導
    体部を前記スロットに挿入する前に、各スロット導体部
    がそれぞれ前記スロット内で径方向に隣接可能なように
    前記渡り導体部の周方向幅を調整することを特徴とする
    回転電機の波巻き巻線の製造方法。
    4. A method of manufacturing a wave winding of a rotating electric machine according to claim 3, wherein the respective crossover conductor portions that are radially adjacent to each other in the slot are formed at equal pitches, and A rotating electric machine, wherein, before inserting each of the transition conductors into the slot, a circumferential width of the transition conductor is adjusted so that each slot conductor can be radially adjacent to each other within the slot. Method of manufacturing a wave winding.
JP23762498A 1998-08-24 1998-08-24 Wave winding coil of rotating electric machine and method for manufacturing the same Expired - Fee Related JP3823556B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23762498A JP3823556B2 (en) 1998-08-24 1998-08-24 Wave winding coil of rotating electric machine and method for manufacturing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23762498A JP3823556B2 (en) 1998-08-24 1998-08-24 Wave winding coil of rotating electric machine and method for manufacturing the same

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Publication Number Publication Date
JP2000069701A true JP2000069701A (en) 2000-03-03
JP3823556B2 JP3823556B2 (en) 2006-09-20

Family

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Country Link
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JP2011142798A (en) * 2009-12-09 2011-07-21 Denso Corp Stator for rotary electric machine
KR101080902B1 (en) 2007-03-05 2011-11-08 가부시키가이샤 덴소 Stator for rotating electric device, and rotating electric device using the stator
JP2014113047A (en) * 2009-07-17 2014-06-19 Denso Corp Stator of rotary electric machine

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JP5429132B2 (en) * 2009-10-23 2014-02-26 株式会社デンソー Manufacturing method of stator of rotating electric machine and stator of rotating electric machine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101080902B1 (en) 2007-03-05 2011-11-08 가부시키가이샤 덴소 Stator for rotating electric device, and rotating electric device using the stator
JP2011109894A (en) * 2009-07-17 2011-06-02 Denso Corp Stator of rotating electric machine and method for manufacturing the same
JP2014113047A (en) * 2009-07-17 2014-06-19 Denso Corp Stator of rotary electric machine
US8779643B2 (en) 2009-07-17 2014-07-15 Denso Corporation Stator for electric rotating machine and method of manufacturing same
JP2011142798A (en) * 2009-12-09 2011-07-21 Denso Corp Stator for rotary electric machine

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