JPH0479742A - Ac three-phase electric rotating machine - Google Patents
Ac three-phase electric rotating machineInfo
- Publication number
- JPH0479742A JPH0479742A JP19009690A JP19009690A JPH0479742A JP H0479742 A JPH0479742 A JP H0479742A JP 19009690 A JP19009690 A JP 19009690A JP 19009690 A JP19009690 A JP 19009690A JP H0479742 A JPH0479742 A JP H0479742A
- Authority
- JP
- Japan
- Prior art keywords
- phase
- windings
- armature
- winding
- coil ends
- 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
Links
- 238000004804 winding Methods 0.000 claims abstract description 52
- 239000011295 pitch Substances 0.000 claims description 14
- 239000006185 dispersion Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Landscapes
- Windings For Motors And Generators (AREA)
- Motor Or Generator Frames (AREA)
- Motor Or Generator Cooling System (AREA)
- Synchronous Machinery (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、三相交流回転電機の電機子巻装技術に関する
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an armature winding technique for a three-phase AC rotating electric machine.
［従来技術］
特開昭６０−２０４２４０号公報は、電機子鉄心の両側
に突出する三相電機子巻線のコイルエンド（すなわち三
相電機子巻線のスロットから突出する部分〉の径方向内
側に遠心ファン及び斜流ファンを個別に設け、これらフ
ァンの空気流によりコイルエンドを積極冷却する車両用
交流発電機を開示している。[Prior Art] Japanese Patent Application Laid-Open No. 60-204240 discloses a coil end of a three-phase armature winding protruding from both sides of an armature core (i.e., a portion protruding from a slot of the three-phase armature winding). This disclosure discloses a vehicle alternator in which a centrifugal fan and a mixed-flow fan are separately installed in the vehicle, and the coil end is actively cooled by the air flow of these fans.
［発明が解決しようとする課題１
しかしながら上記ファンとコイルエンドとの間の隙間は
かなり狭く、ここに羽根で生じた風圧か作用することに
よってファン騒音を発生しやすい。[Problem to be Solved by the Invention 1] However, the gap between the fan and the coil end is quite narrow, and wind pressure generated by the blades acts there, which tends to generate fan noise.
特に電機子巻線のコイルエンドは周方向に一定ピッチの
凹凸形状をもつので、所定の可聴周波数の騒音が発生す
る。In particular, since the coil ends of the armature windings have irregularities with a constant pitch in the circumferential direction, noise at a predetermined audible frequency is generated.
また、このような三相交流回転電機では、例えば無理な
曲げを回避したりまた径方向あるいは軸方向への張出し
を防止するために、できるだけコイルエンドの過密集合
を抑止し周方向のコイルエンド密度を一定化することが
望まれている。In addition, in such a three-phase AC rotating electric machine, for example, in order to avoid excessive bending or to prevent overhang in the radial or axial direction, it is necessary to prevent overcrowding of the coil ends as much as possible and reduce the coil end density in the circumferential direction. It is desired to make it constant.
本発明はこのような問題に鑑みなされたものであり、コ
イルエンド風切り音の低減あるいはコイルエンドの過密
集合の抑止が可能な三相交流回転電機を提供することを
その解決すべき課題としている。The present invention has been made in view of these problems, and an object to be solved is to provide a three-phase AC rotating electric machine that can reduce wind noise from coil ends or prevent overcrowding of coil ends.
［課題を解決するための手段］
本発明の三相交流回転電機は、電機子鉄心の奇数スロッ
トに装入される第１三相電機子巻線と、前記電機子鉄心
の偶数スロットに装入される第２三相電機子巻線とを備
える三相交流回転電機において、前記電機子鉄心の両側
に突出する前記第１、第２三相電機子巻線の各相巻線の
コイルエンド中央は、周方向に単位ピッチの１．２．２
．３．２．２のピッチパタンで配列されることを特徴と
している。[Means for Solving the Problems] A three-phase AC rotating electrical machine of the present invention has first three-phase armature windings inserted into odd-numbered slots of the armature core, and first three-phase armature windings inserted into even-numbered slots of the armature core. In a three-phase AC rotating electric machine, the center coil end of each phase winding of the first and second three-phase armature windings protrudes on both sides of the armature core. is a unit pitch of 1.2.2 in the circumferential direction.
．． It is characterized by being arranged in a pitch pattern of 3.2.2.
［作用及び発明の効果］
以上説明したように本発明の三相交流回転電機では、奇
数スロットに第１三相電機子巻線（Ｕ相、■相、Ｗ相）
を、偶数スロットに第２三相電機子巻線（×相、ｙ相−
１Ｚ相）を装入する。そして、周方向に隣接するコイル
エンド中央間の間隔は、単位ピッチの１．２．２．３．
２．２のピッチパタンて配列されている。[Operation and Effects of the Invention] As explained above, in the three-phase AC rotating electric machine of the present invention, the first three-phase armature windings (U phase, ■ phase, W phase) are installed in the odd slots.
, the second three-phase armature winding (x phase, y phase -
1Z phase). The interval between the centers of adjacent coil ends in the circumferential direction is 1.2.2.3 of the unit pitch.
They are arranged in a pitch pattern of 2.2.
このようにすれば、後述する実施例で詳述するようにコ
イルエンドの過密集合が軽減され、この過密集合の分散
（回避）のために無理な曲げや径方向あるいは軸方向へ
の張出しを行う必要が減る。In this way, as will be explained in detail in the embodiment described later, overcrowding of the coil ends will be reduced, and in order to disperse (avoid) this overcrowding, forced bending or overhanging in the radial or axial direction will be necessary. less need.
また、コイルエンドの周方向の分散か均一化するので、
所定の可聴周波数の騒音（風切り音）を低減することが
できる。In addition, it evens out the distribution of the coil ends in the circumferential direction, so
Noise (wind noise) at a predetermined audible frequency can be reduced.
更に、コイルエンドか周方向に不等ピッチで配列される
ために、それが等ピッチで配列される場合に比較して、
風切り音の周波数スペクトルが分散し、かつ、その基本
周波数聴覚感度がより低い低域に落ちるので、低騒音化
か可能となる。Furthermore, since the coil ends are arranged at uneven pitches in the circumferential direction, compared to when they are arranged at equal pitches,
Since the frequency spectrum of wind noise is dispersed and the fundamental frequency auditory sensitivity falls to a lower frequency range, it is possible to reduce noise.
［実施例］
（第１実施例）
本発明の三相交流回転電機の一実施例を第１図〜第３図
に示す。第１図は電機子巻線図、第２図は電機子回路図
、第３図は要部断面図である。[Example] (First Example) An example of the three-phase AC rotating electric machine of the present invention is shown in FIGS. 1 to 3. FIG. 1 is an armature winding diagram, FIG. 2 is an armature circuit diagram, and FIG. 3 is a sectional view of main parts.
この三相交流回転電機は、車両用三相交流発電機であっ
て、回転軸５に取付けた計１２極の爪状磁極をもつ回転
子鉄心６を有し、回転子鉄心６の両端には遠心ファン７
．８が設けられている。回転子鉄心６は電機子鉄心９の
内部に回転自在に嵌入されており、電機子鉄心９から軸
方向両側に三相電機子巻線１のコイルエンドが突出して
いる。This three-phase AC rotating electric machine is a three-phase AC generator for a vehicle, and has a rotor core 6 having a total of 12 claw-shaped magnetic poles attached to a rotating shaft 5. centrifugal fan 7
．． 8 is provided. The rotor core 6 is rotatably fitted into the armature core 9, and the coil ends of the three-phase armature winding 1 protrude from the armature core 9 on both sides in the axial direction.
すなわち、電機子鉄心９は７２スロツトをもち、したが
って、隣接する１スロット間隔は電気角度３０度に相当
する。That is, the armature core 9 has 72 slots, and therefore, the interval between adjacent slots corresponds to 30 electrical degrees.
三相電機子巻線１は、第２図に示すようにそれぞれ異な
る三相仝波整流器１０．１１に接続される第１三相電機
子巻線（ｕ、ｖ、ｗ）と第２三相電機子巻線（ｘ、ｙ、
ｚ）からなり、両者はＹ接続されている。The three-phase armature winding 1 includes a first three-phase armature winding (u, v, w) and a second three-phase armature winding (u, v, w), which are connected to different three-phase high wave rectifiers 10 and 11, respectively, as shown in FIG. Armature winding (x, y,
z), both of which are Y-connected.
三相電機子巻線（ｕ、ｖ、ｗ）、（Ｘ、Ｖ、Ｚ）は、第
１図に示すように、Ｘ、−ｕ、ｚ、−Ｗ、ｙ、−ｖ、−
ｘ、ｕ、−ｚ、ｗ、−ｙ、ｖの順番となるように、今節
波巻されている。なおここで、符号は図中上から下への
巻き方向を指定する。The three-phase armature windings (u, v, w), (X, V, Z) are X, -u, z, -W, y, -v, - as shown in Figure 1.
It is now wave-wound so that the order is x, u, -z, w, -y, v. Note that here, the symbol designates the winding direction from top to bottom in the figure.
したがって、偶数スロット（もちろんスロット番号のっ
けかたによっては奇数スロットでもよい）に装入される
第１三相電機子巻線（Ｕ、■、Ｗ）の各相巻線の電圧は
、奇数スロット（もちろんスロット番号のっけかたによ
っては偶数スロットでもよい）に装入される第２三相電
機子巻線（Ｘ、ｙ、ｚ）の特定の相巻線の電圧に対して
電気角３０度だけ位相がシフトしている。Therefore, the voltage of each phase winding of the first 3-phase armature winding (U, Of course, depending on how you number the slots, it may be an even slot) is shifting.
このように配線すると、周方向に隣接する２つのコイル
エンド中央ｍ、ｍの間の間隔は、単位ピッチの１．２．
２．３．２．２のピッチパタンで配列されている。なお
、１単位ピッチはこの場合、１スロット間隔とされてい
る。When wired in this way, the distance between the two circumferentially adjacent coil end centers m and m is 1.2 of the unit pitch.
They are arranged in a pitch pattern of 2.3.2.2. Note that one unit pitch in this case is one slot interval.
（実施例効果）
以上説明したようにこの実施例の三相交流回転電機では
、第１図及び第４図に示すように、各相巻線（ｘ、ｙ、
ｚ、ｕ、ｖ、ｗ）を、×、−ｕ。(Effects of Example) As explained above, in the three-phase AC rotating electric machine of this example, each phase winding (x, y,
z, u, v, w), x, -u.
ｚ、−ｗ、ｙ、−ｖ、−ｘ、ｕ、−ｚ、ｗ、 −ｙ。z, -w, y, -v, -x, u, -z, w, -y.
■の順に配列している。They are arranged in the order of ■.
したがって従来のように、各相巻線を、Ｘ、Ｕ。Therefore, as in the conventional case, each phase winding is connected to X and U.
ｚ、−ｗ、ｙ、ｖ、−ｘ、−ｕｌｚ、ｗ、−ｙ。z, -w, y, v, -x, -ulz, w, -y.
■の順に配列する場合（第５図参照）に比べて、コイル
エンドの過密集合が軽減される。すなわち、第５図では
、隣接するスロット１．２から出て右方向に延設される
コイルエンド対は、スロット１．２に隣接するスロット
３．４から出て左方向に延設されるコイルエンド対と交
差する。したがって、この交差部分においてコイルエン
ドの過密集合１００か形成される。Compared to the case where the coil ends are arranged in the order of (2) (see FIG. 5), overcrowding of the coil ends is reduced. That is, in FIG. 5, the coil end pair that comes out of the adjacent slot 1.2 and extends to the right is the same as the coil end pair that comes out of the slot 3.4 that is adjacent to the slot 1.2 and extends to the left. Intersect with end pair. Therefore, an overcrowded collection 100 of coil ends is formed at this intersection.
一方、第４図に示すこの実施例の三相交流回転電機では
、スロット７２．１から出て右方向に延設されるコイル
エンド対は、スロット２．４から出て左方向に延設され
るコイルエンド対と交差する。すなわち、スロット２．
４から出るコイルエンドは互いに２スロツ１へ分だけ離
れているので、第５図の従来例に比較してコイルエンド
の過密集合が形成されにくく、コイルエンド処理が容易
となる。On the other hand, in the three-phase AC rotating electric machine of this embodiment shown in FIG. 4, the coil end pair that comes out of the slot 72.1 and extends to the right, comes out of the slot 2.4 and extends to the left. intersects the coil end pair. That is, slot 2.
Since the coil ends coming out from 4 are separated from each other by two slots 1, overcrowded collection of coil ends is less likely to be formed compared to the conventional example shown in FIG. 5, and the coil end processing becomes easier.
更にこの実施例では、コイルエンドの下部に遠心ファン
７．８が設けられ、コイルエンドに遠心空気流が当たる
冷却構造を採用しているので、特にコイルエンドの高冷
却を維持しつつ、従来不可避であったコイルエンド風切
り音を大きく低減することかできる。すなわち巻線の位
置ピッチが前述の如く不等化しであるので、コイルエン
ドの凹凸は前記ピッチで不等化される。そのためこの凹
凸部で生じるノイズの周波数成分は低周波から高周波ま
でレベル的に低く平準、分散化されて、耳障りでなくな
る。Furthermore, in this embodiment, a centrifugal fan 7.8 is provided at the bottom of the coil end, and a cooling structure is adopted in which centrifugal airflow hits the coil end, thereby maintaining high cooling of the coil end in particular. It is possible to significantly reduce coil end wind noise. That is, since the positional pitch of the windings is made unequal as described above, the unevenness of the coil end is made unequal at the pitch. Therefore, the frequency components of the noise generated in the uneven portions are low in level from low frequencies to high frequencies, and are dispersed, so that they are no longer harsh on the ears.
（第２実施例）
本発明の三相交流回転電機の仙の実施例を第６図〜第７
図に示す。第６図は電機子巻線図、第７図は電機子回路
図でおる。(Second Embodiment) A further embodiment of the three-phase AC rotating electric machine of the present invention is shown in FIGS. 6 to 7.
As shown in the figure. Figure 6 is an armature winding diagram, and Figure 7 is an armature circuit diagram.
この実施例では、第１三相電機子巻線（Ｕ、Ｖ、Ｗ）が
△結線され、第２三相電機子巻線（ｘ、ｙ、Ｚ〉がＹ結
線され、両者の各出力端が個別に共通接続されて三相全
波整流器１０の交流入力端に結線されている。In this embodiment, the first three-phase armature windings (U, V, W) are Δ-connected, the second three-phase armature windings (x, y, Z) are Y-connected, and each output terminal of both are individually commonly connected and connected to the AC input terminal of the three-phase full-wave rectifier 10.
もちろん、第１三相電機子巻線（Ｕ、■、Ｗ）と第２三
相電機子巻線（ｘ、ｙ、ｚ）との巻数比は所定比率に設
定されている。Of course, the turn ratio between the first three-phase armature windings (U, ■, W) and the second three-phase armature windings (x, y, z) is set to a predetermined ratio.
けれどもこれら相巻線（ｘ、ｙ、７、Ｕ、Ｖ、Ｗ）は、
第１実施例と同じく、Ｘ、−Ｕ、Ｚ、ｗ、ｙ、−ｖ、−
ｘＳｕ、−ｚ、ｗ、−ｙ、ｖの順に配列されている。However, these phase windings (x, y, 7, U, V, W) are
As in the first embodiment, X, -U, Z, w, y, -v, -
They are arranged in the order of xSu, -z, w, -y, and v.
またこれら２組の三相巻線の巻き始め端子群（Ｕ２、■
２、ｗｌ、ｘ２、ｙ２、Ｚｌ）、巻き終り端子群（ｕｌ
、ＶＬＷ２、×１、ｙｌ、Ｚ２＞の位置は接続が楽なよ
うに、巻き終り端子Ｚ１かこれらと接続すべきｕ２、Ｗ
ｌの最近例であるスロット１３より取り出している。Also, these two sets of three-phase winding start terminal groups (U2, ■
2, wl, x2, y2, Zl), winding end terminal group (ul
, VLW2,
It is taken out from slot 13, which is a recent example of 1.
第１図は電機子巻線図、第２図は電機子回路図、第３図
は要部断面図である。第４図は第１実施例における巻線
方式によるコイルエンドの集合状態を示す電機子巻線図
、第５図は従来実施される巻線方式によるコイルエンド
の過密集合状態を示す電機子巻線図、第６図は第２実施
例の電機子巻線図、第７図は第２実施例の電機子回路図
である。
１・・・三相電機子巻線
９・・・電機子鉄心
Ｕ、Ｖ、Ｗ・・・第１三相電機子巻線
ｘ、ｙ、ｚ・・・第２三相電機子巻線FIG. 1 is an armature winding diagram, FIG. 2 is an armature circuit diagram, and FIG. 3 is a sectional view of main parts. Fig. 4 is an armature winding diagram showing a state in which the coil ends are assembled according to the winding method in the first embodiment, and Fig. 5 is an armature winding diagram showing the overcrowded arrangement of the coil ends in the conventional winding method. 6 is an armature winding diagram of the second embodiment, and FIG. 7 is an armature circuit diagram of the second embodiment. 1... Three-phase armature winding 9... Armature core U, V, W... First three-phase armature winding x, y, z... Second three-phase armature winding
Claims (1)
巻線と、前記電機子鉄心の偶数スロットに装入される第
２三相電機子巻線とを備える三相交流回転電機において
、 前記電機子鉄心の両側に突出する前記第１、第２三相電
機子巻線の各相巻線のコイルエンド中央は、周方向に単
位ピッチの１、２、２、３、２、２のピッチパタンで配
列されることを特徴とする三相交流回転電機。[Scope of Claims] A first three-phase armature winding that is inserted into odd-numbered slots of the armature core, and a second three-phase armature winding that is inserted into even-numbered slots of the armature core. In a three-phase AC rotating electrical machine, the coil end centers of each phase winding of the first and second three-phase armature windings protruding on both sides of the armature core are arranged at unit pitches of 1, 2, and 2 in the circumferential direction. , a three-phase AC rotating electrical machine characterized by being arranged in a pitch pattern of 3, 2, 2.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19009690A JP2924112B2 (en) | 1990-07-18 | 1990-07-18 | Three-phase AC rotating electric machine |
| EP91106477A EP0454039B1 (en) | 1990-04-24 | 1991-04-23 | Alternating current generator having a plurality of independent three-phase windings |
| DE69122801T DE69122801T2 (en) | 1990-04-24 | 1991-04-23 | AC generator having a plurality of independent three-phase windings |
| US07/689,343 US5122705A (en) | 1990-04-24 | 1991-04-24 | Alternating current generator having a plurality of independent three-phase windings |
| US10/197,833 USRE38464E1 (en) | 1990-04-24 | 2002-07-19 | Alternating current generator having a plurality of independent three-phase windings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19009690A JP2924112B2 (en) | 1990-07-18 | 1990-07-18 | Three-phase AC rotating electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0479742A true JPH0479742A (en) | 1992-03-13 |
| JP2924112B2 JP2924112B2 (en) | 1999-07-26 |
Family
ID=16252307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19009690A Expired - Fee Related JP2924112B2 (en) | 1990-04-24 | 1990-07-18 | Three-phase AC rotating electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2924112B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5955810A (en) * | 1997-05-26 | 1999-09-21 | Denso Corporation | Alternator for vehicle |
| EP1107425A2 (en) * | 1999-12-06 | 2001-06-13 | Mitsubishi Denki Kabushiki Kaisha | Vehicular AC generator |
| EP1708339A2 (en) * | 2005-03-30 | 2006-10-04 | Denso Corporation | Rotary electric machine and stator coil for rotary electric machines |
-
1990
- 1990-07-18 JP JP19009690A patent/JP2924112B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5955810A (en) * | 1997-05-26 | 1999-09-21 | Denso Corporation | Alternator for vehicle |
| EP1107425A2 (en) * | 1999-12-06 | 2001-06-13 | Mitsubishi Denki Kabushiki Kaisha | Vehicular AC generator |
| EP1107425A3 (en) * | 1999-12-06 | 2003-07-30 | Mitsubishi Denki Kabushiki Kaisha | Vehicular AC generator |
| EP1708339A2 (en) * | 2005-03-30 | 2006-10-04 | Denso Corporation | Rotary electric machine and stator coil for rotary electric machines |
| EP1708339A3 (en) * | 2005-03-30 | 2007-08-08 | Denso Corporation | Rotary electric machine and stator coil for rotary electric machines |
| US7705506B2 (en) | 2005-03-30 | 2010-04-27 | Denso Corporation | Rotary electric machine and stator coil rotary electric machines |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2924112B2 (en) | 1999-07-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5449962A (en) | Rotary electric machinery | |
| AU710990B2 (en) | Alternator for an automotive vehicle | |
| US5965965A (en) | Stator winding arrangement of alternator for vehicle | |
| US5122705A (en) | Alternating current generator having a plurality of independent three-phase windings | |
| US5691590A (en) | Alternator with magnetic noise reduction mechanism | |
| US7030533B2 (en) | Rotary electric machine | |
| JP5385166B2 (en) | Rotating electric machine | |
| JP3484412B2 (en) | Method for manufacturing vehicle alternator and stator thereof | |
| US7417355B2 (en) | Vehicular tandem type rotary electric machine | |
| JPH0429547A (en) | Ac generator for vehicle | |
| US20090072652A1 (en) | Electric rotating machine | |
| JP3633498B2 (en) | Rotating electric machine | |
| JP2000069729A (en) | Vehicle ac generator | |
| USRE38464E1 (en) | Alternating current generator having a plurality of independent three-phase windings | |
| US6563247B2 (en) | AC generator having stator assembly with improved phase coil insertion order to reduce noise | |
| JPH0479742A (en) | Ac three-phase electric rotating machine | |
| US4562397A (en) | Squirrel-cage induction motor | |
| CN110867994B (en) | Rotating electrical machine | |
| JP2000228852A (en) | Alternator for vehicle | |
| EP1465321B1 (en) | Stator winding arrangement of alternator for vehicle | |
| JP3121000B2 (en) | Rotating electric machine | |
| JP4438234B2 (en) | AC generator for vehicles | |
| JPH04251537A (en) | Armature for rotating machine | |
| JPS62285649A (en) | Induction machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080507 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100507 Year of fee payment: 11 |
|
| LAPS | Cancellation because of no payment of annual fees |