WO2014188588A1 - Rotating electric machine stator - Google Patents

Rotating electric machine stator Download PDF

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Publication number
WO2014188588A1
WO2014188588A1 PCT/JP2013/064492 JP2013064492W WO2014188588A1 WO 2014188588 A1 WO2014188588 A1 WO 2014188588A1 JP 2013064492 W JP2013064492 W JP 2013064492W WO 2014188588 A1 WO2014188588 A1 WO 2014188588A1
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Prior art keywords
winding
stator
coil
turn
phase
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PCT/JP2013/064492
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French (fr)
Japanese (ja)
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祐輔 磯野
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三菱電機株式会社
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Priority to PCT/JP2013/064492 priority Critical patent/WO2014188588A1/en
Publication of WO2014188588A1 publication Critical patent/WO2014188588A1/en

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/32Windings characterised by the shape, form or construction of the insulation
    • H02K3/38Windings characterised by the shape, form or construction of the insulation around winding heads, equalising connectors, or connections thereto

Abstract

The purpose of this invention is to obtain a rotating electric machine stator capable of improving an anti-surge property without using a coated conductive wire to which an anti-surge property is imparted, in such a way that an insulating tube is mounted on the root side of a portion extending from a first turn which is the winding start of a first coil on the input side of each phase winding constituted by concentrated winding coils. The rotating electric machine stator according to the invention comprises: a stator core having a ring-shaped yoke and a plurality of teeth each projecting from the inner circumferential surface of the yoke toward a diameter direction inner side and arranged in a circumferential direction; and a stator coil constituted by a three-phase AC connection of concentrated winding coils that are fabricated by winding a coated conductive wire around each of the teeth. In the rotating electric machine stator, an insulating tube is mounted on the root side of a portion extending from a first turn which is the winding start of the first concentrated winding coil from the input side of each of the phase windings of the stator coil. The insulating tube is disposed at the intersection of the portion extending from the first turn which is the winding start of the first concentrated winding coil and a portion extending from the final turn.

Description

回転電機のステータRotating electric machine stator
 この発明は、例えば電動機、発電機などの回転電機のステータに関するものである。 The present invention relates to a stator of a rotating electric machine such as an electric motor or a generator.
 モータをインバータ電源で駆動する場合、インバータの発する急峻なサージ電圧が原因となり、モータの巻線ターン間に高い電圧が発生することが、非特許文献1などに報告されている。そして、非特許文献1には、インバータサージに対する回転電機側での対策として、巻線に使用する絶縁電線の絶縁被膜の厚さを厚くすることや耐コロナ性に優れた絶縁電線を使用することが挙げられていた。
 しかしながら、巻線に耐サージ性を付与するこのような対策では、巻線スペースの減少やコストアップなどの問題があった。
Non-Patent Document 1 reports that when a motor is driven by an inverter power supply, a high voltage is generated between winding turns of the motor due to a steep surge voltage generated by the inverter. In Non-Patent Document 1, as a countermeasure on the rotating electrical machine side against the inverter surge, increase the thickness of the insulating coating of the insulated wire used for the winding or use an insulated wire excellent in corona resistance. Was mentioned.
However, such measures for imparting surge resistance to the winding have problems such as a reduction in winding space and an increase in cost.
 このような状況を鑑み、分布巻き、かつ重ね巻きされた各相の巻線をY結線としたステータを備えた従来の三相交流電動機では、被覆導線を巻枠に巻回して作製したコイルをステータコアに挿入できるという製造工程の面から、およびコイル挿入後も巻線スペースに比較的余裕があるというステータ構造の面から、各相巻線の入力側の第1コイルの巻き始めの第1ターンの被覆導線の外面を絶縁部材で覆い、第1ターンの被覆導線と残余のターンの被覆導線との距離を大きくして、ターン間の耐サージ性を向上させていた(例えば、特許文献1参照)。 In view of such a situation, in a conventional three-phase AC motor provided with a distributed winding and a stator in which the windings of each of the phases wound in layers are Y-connected, a coil produced by winding a coated conductor around a winding frame is used. From the aspect of the manufacturing process that can be inserted into the stator core, and from the aspect of the stator structure that there is a relatively large winding space even after coil insertion, the first turn at the beginning of winding of the first coil on the input side of each phase winding The outer surface of the covered conductive wire is covered with an insulating member, and the distance between the covered conductive wire of the first turn and the covered conductive wire of the remaining turns is increased to improve surge resistance between turns (for example, see Patent Document 1). ).
特開2012-120405号公報JP 2012-120405 A
 しかしながら、従来の三相交流電動機における耐サージ対策は、分布巻き、かつ重ね巻きされた巻線を用いることによる上述の製造工程およびステータ構造の利点から講じられる対策であり、巻線スペースが限られた集中巻コイルを用いたステータには適用できなかった。 However, the surge protection in the conventional three-phase AC motor is a measure taken from the advantages of the above-described manufacturing process and stator structure by using distributed winding and lap winding, and the winding space is limited. It could not be applied to a stator using concentrated winding coils.
 そこで、本出願人は、被覆導線をティースに多層多列に巻回して作製される集中巻コイルでは、巻き始めの第1ターンの被覆導線と最終ターンの被覆導線との間の電位差が最も大きくなり、サージ電圧が発生した場合には、入力側の第1コイルの巻き始めの第1ターンからの延出部と最終ターンからの延出部との交差部で部分放電が起こり、絶縁劣化を引き起こすことを見いだして、本発明を発明するに至った。 Therefore, the applicant of the present invention has the largest potential difference between the coated conductor of the first turn at the beginning of winding and the coated conductor of the final turn in the concentrated winding coil produced by winding the coated conductor in a multi-layered multiple row around the teeth. When a surge voltage occurs, partial discharge occurs at the intersection of the extension from the first turn at the beginning of winding of the first coil on the input side and the extension from the last turn, resulting in insulation deterioration. As a result, the present invention was invented.
 この発明は、上記課題を解決するためになされたもので、集中巻コイルにより構成された各相巻線の入力側の第1コイルの巻き始めの第1ターンからの延出部の根元側に絶縁チューブを装着し、耐サージ性を付与された被覆導線を用いることなく、耐サージ性を向上させることができる回転電機のステータを得ることを目的とする。 The present invention has been made to solve the above-described problem, and is provided on the root side of the extending portion from the first turn of the first coil on the input side of each phase winding constituted by concentrated winding coils. An object of the present invention is to obtain a stator for a rotating electrical machine that can be improved in surge resistance without using an insulated tube and using a coated conductor wire with surge resistance.
 この発明に係る回転電機のステータは、円環状のヨーク、およびそれぞれ上記ヨークの内周面から径方向内方に延出して周方向に配列された複数のティースを有するステータコアと、被覆導線を上記複数のティースのそれぞれに巻回して作製された集中巻コイルを三相交流結線して構成されたステータコイルと、を備え、絶縁チューブが、上記ステータコイルの各相巻線の入力側から1番目の上記集中巻コイルの巻き始めの第1ターンからの延出部の根元側に装着されて、上記1番目の集中巻コイルの巻き始めの第1ターンからの延出部と最終ターンからの延出部との交差部に配置されている。 A stator for a rotating electrical machine according to the present invention includes an annular yoke, a stator core having a plurality of teeth extending radially inward from the inner peripheral surface of the yoke, respectively, and a coated conductor. A stator coil formed by winding three-phase AC connections of concentrated winding coils that are wound around each of a plurality of teeth, and an insulating tube is first from the input side of each phase winding of the stator coil The first concentrated winding coil is attached to the base side of the extension portion from the first turn of the winding start, the extension portion from the first turn of the first concentrated winding coil and the extension from the last turn. It is arranged at the intersection with the exit.
 この発明によれば、サージ電圧が発生したときに、電位差が最も大きくなる1番目の集中巻コイルの巻き始めの第1ターンからの延出部と最終ターンからの延出部との交差部に絶縁チューブが配置されているので、第1ターンからの延出部と最終ターンからの延出部との間の絶縁距離が長くなる。そこで、サージ電圧が発生しても、第1ターンからの延出部と最終ターンからの延出部との交差部での部分放電の発生が抑制される。これにより、耐サージ性を付与した被覆導線を用いる必要がなく、安価に耐サージ性を向上できるとともに、巻線スペースが増大し、占積率を高めることができる。 According to the present invention, when a surge voltage is generated, at the intersection of the extension portion from the first turn and the extension portion from the last turn of the first concentrated winding coil where the potential difference becomes the largest. Since the insulating tube is disposed, the insulation distance between the extended portion from the first turn and the extended portion from the final turn becomes long. Therefore, even if a surge voltage is generated, the occurrence of partial discharge at the intersection of the extended portion from the first turn and the extended portion from the last turn is suppressed. Thereby, it is not necessary to use a coated conductor wire with surge resistance, and surge resistance can be improved at a low cost, and the winding space can be increased and the space factor can be increased.
この発明の実施の形態1に係る回転電機のステータを示す端面図である。It is an end elevation which shows the stator of the rotary electric machine which concerns on Embodiment 1 of this invention. 図1のA部の一部破断拡大図である。It is a partially broken enlarged view of the A part of FIG. この発明の実施の形態1に係る回転電機のステータコイルの結線図である。It is a connection diagram of the stator coil of the rotary electric machine which concerns on Embodiment 1 of this invention. この発明の実施の形態1に係る回転電機のステータにおける入力側の集中巻コイルを示す模式図である。It is a schematic diagram which shows the concentrated winding coil by the side of the input in the stator of the rotary electric machine which concerns on Embodiment 1 of this invention. 図4のV-V矢視断面図である。FIG. 5 is a cross-sectional view taken along line VV in FIG. 4. この発明の実施の形態1に係る回転電機のステータにおける集中巻コイルの結線状態を説明する模式図である。It is a schematic diagram explaining the connection state of the concentrated winding coil in the stator of the rotary electric machine which concerns on Embodiment 1 of this invention.
 以下、本発明の回転電機のステータの好適な実施の形態につき図面を用いて説明する。 Hereinafter, preferred embodiments of a stator for a rotating electrical machine according to the present invention will be described with reference to the drawings.
 実施の形態1.
 図1はこの発明の実施の形態1に係る回転電機のステータを示す端面図、図2は図1のA部の一部破断拡大図、図3はこの発明の実施の形態1に係る回転電機のステータコイルの結線図、図4はこの発明の実施の形態1に係る回転電機のステータにおける入力側の集中巻コイルを示す模式図、図5は図4のV-V矢視断面図、図6はこの発明の実施の形態1に係る回転電機のステータにおける集中巻コイルの結線状態を説明する模式図である。
Embodiment 1 FIG.
1 is an end view showing a stator of a rotary electric machine according to Embodiment 1 of the present invention, FIG. 2 is a partially broken enlarged view of part A of FIG. 1, and FIG. 3 is a rotary electric machine according to Embodiment 1 of the present invention. FIG. 4 is a schematic diagram showing a concentrated winding coil on the input side in the stator of the rotary electric machine according to Embodiment 1 of the present invention. FIG. 5 is a cross-sectional view taken along line VV in FIG. 6 is a schematic diagram illustrating a connection state of concentrated winding coils in the stator of the rotary electric machine according to Embodiment 1 of the present invention.
 図1および図2において、ステータ1は、円環状のステータコア2と、ステータコア2に装着されたステータコイル5と、ステータコア2の軸方向の一端側に周方向に配設されたU相口出し用電線10、V相口出し用電線11、W相口出し用電線12および中性点結線用電線13と、U相口出し用電線10、V相口出し用電線11、W相口出し用電線12および中性点結線用電線13の浮きを防止する押さえ板17と、を備えている。 1 and 2, a stator 1 includes an annular stator core 2, a stator coil 5 attached to the stator core 2, and a U-phase lead-out wire disposed in the circumferential direction on one axial end side of the stator core 2. 10, V-phase lead-out wire 11, W-phase lead-out wire 12 and neutral-point connection wire 13, U-phase lead-out wire 10, V-phase lead-out wire 11, W-phase lead-out wire 12 and neutral-point connection And a pressing plate 17 that prevents the electric wire 13 from floating.
 U相口出し用電線10、V相口出し用電線11、W相口出し用電線12および中性点結線用電線13は、それぞれ、エナメル樹脂などで絶縁被覆された銅線やアルミニウム線である。 The U-phase lead-out wire 10, the V-phase lead-out wire 11, the W-phase lead-out wire 12 and the neutral-point connection wire 13 are respectively a copper wire or an aluminum wire that is insulation-coated with enamel resin or the like.
 ステータコア2は、例えば電磁鋼板を積層一体化して構成され、円環状のヨーク3と、それぞれ、ヨーク3の内周壁面から径方向内方に突出して周方向の等角ピッチで配列された72本のティース4と、を備えている。 The stator core 2 is formed by, for example, laminating and integrating electromagnetic steel plates, and has 72 annular yokes 3 and 72 arranged radially at an equiangular pitch in the circumferential direction protruding from the inner peripheral wall surface of the yoke 3. The teeth 4 are provided.
 ステータコイル5は、図4に示されるように、例えば、エナメル樹脂で絶縁被覆された銅線やアルミニウム線などからなる被覆導線7をティース4のそれぞれに多層多列に巻き回して作製された72個の集中巻コイル6を備えている。72個の集中巻コイル6は、周方向に、U相、U相、V相、V相、W相、W相の順に12回繰り返して配列されている。インシュレータ8が、ティース4と集中巻コイル6との間に挿入されている。 As shown in FIG. 4, the stator coil 5 is produced by, for example, winding a coated conductive wire 7 made of copper wire, aluminum wire, or the like that is insulation-coated with enamel resin around each of the teeth 4 in a multi-layered multiple row 72. One concentrated winding coil 6 is provided. The 72 concentrated winding coils 6 are arranged 12 times in the circumferential direction in the order of U phase, U phase, V phase, V phase, W phase, and W phase. An insulator 8 is inserted between the tooth 4 and the concentrated winding coil 6.
 隣り合う集中巻コイル6の一方の集中巻コイル6では、ポリイミド樹脂などの絶縁性樹脂製の絶縁チューブ15が、図4に示されるように、被覆導線7をティース4に多層多列に巻き回して構成される巻線部の巻き始めの第1ターンからの延出部の根元側に装着されている。さらに、例えば、ガラスエポキシ樹脂製の保護チューブ16が、第1ターンからの延出部に、絶縁チューブ15の少なくとも一部を覆って結線部18(図示せず)に至るように装着されている。そこえ、絶縁チューブ15は、図5に示されるように、被覆導線7をティース4に多層多列に巻き回して構成される巻線部の巻き始めの第1ターンからの延出部と巻き終わりの第1ターン、すなわち最終ターンからの延出部との交差部に配置される。これにより、第1ターンからの延出部と最終ターンからの延出部が離間される。 In one concentrated winding coil 6 adjacent to the concentrated winding coil 6, an insulating tube 15 made of an insulating resin such as polyimide resin is wound around the teeth 4 in a multi-layered multiple row around the teeth 4 as shown in FIG. 4. Is mounted on the base side of the extended portion from the first turn at the beginning of winding of the winding portion configured as described above. Further, for example, a protective tube 16 made of glass epoxy resin is attached to the extending portion from the first turn so as to cover at least a part of the insulating tube 15 and reach the connection portion 18 (not shown). . Therefore, as shown in FIG. 5, the insulating tube 15 is wound with the extension portion from the first turn at the start of winding of the winding portion formed by winding the coated conductor 7 around the teeth 4 in a multi-layered manner. The first turn at the end, that is, at the intersection with the extension from the last turn. Thereby, the extension part from the 1st turn and the extension part from the last turn are separated.
 また、隣り合う集中巻コイル6の他方の集中巻コイル6では、保護チューブ16が、図6に示されるように、被覆導線7をティース4に多層多列に巻き回して構成される巻線部の最終ターンからの延出部の根元側から結線部18に至るように装着されている。 Moreover, in the other concentrated winding coil 6 of the adjacent concentrated winding coil 6, as shown in FIG. 6, the winding part comprised by winding the covering conducting wire 7 around the teeth 4 in the multilayer multi-row. It is mounted so as to reach the connection part 18 from the base side of the extension part from the last turn.
 隣り合う集中巻コイル6は、図6に示されるように、一方の集中巻コイル6の最終ターンの延出部が他方の集中巻コイル6の巻き始めの第1ターンの延出部に電気的に接続され、直列に接続される。そして、一方の集中巻コイル6の巻き始めの第1ターンからの延出部がU相口出し用電線10に結線され、他方の集中巻コイル6の最終ターンからの延出部が中性点結線用電線13に結線される。ここで、一方の集中巻コイル6の巻き始めの第1ターンからの延出部は、図示していないが、先端側の絶縁被膜を剥がされ、U相口出し用電線10の絶縁被膜剥離部に沿わされ、スリーブを被せられて、スリーブとともにカシメ固定され、U相口出し用電線10に結線される。さらに、絶縁テープ14がその結線部18に巻かれて、電気絶縁性が確保される。なお、他方の集中巻コイル6の最終ターンからの延出部も、同様に、中性点結線用電線13に結線される。 As shown in FIG. 6, the adjacent concentrated winding coil 6 is electrically connected to the extension portion of the first turn at the beginning of winding of the other concentrated winding coil 6. Connected in series. And the extension part from the 1st turn of the winding start of one concentrated winding coil 6 is connected to the U-phase lead-out electric wire 10, and the extension part from the last turn of the other concentrated winding coil 6 is a neutral point connection. Wired to the service wire 13. Here, the extension portion from the first turn at the beginning of winding of one concentrated winding coil 6 is not shown, but the insulating coating on the tip side is peeled off, and the insulating coating peeling portion of the U-phase lead-out wire 10 is removed. Along the sleeve, the sleeve is put on, and it is caulked and fixed together with the sleeve, and is connected to the U-phase lead-out electric wire 10. Further, the insulating tape 14 is wound around the connecting portion 18 to ensure electrical insulation. In addition, the extension part from the last turn of the other concentrated winding coil 6 is similarly connected to the electric wire 13 for neutral point connection.
 U相巻線20は、このように隣り合う2つのU相の集中巻コイル6を直列に接続して作製された12個のコイル群を並列に接続して構成される。同様に、V相巻線21は、それぞれ、隣り合う2つのU相の集中巻コイル6を直列に接続して作製された12個のコイル群を並列に接続して構成され、W相巻線22は、それぞれ、隣り合う2つのU相の集中巻コイル6を直列に接続して作製された12個のコイル群を並列に接続して構成される。ステータコイル5は、図3に示されるように、このように構成されたU相巻線20、V相巻線21およびW相巻線22を三相交流結線の一つであるY結線して構成される。 The U-phase winding 20 is configured by connecting twelve coil groups formed by connecting two adjacent U-phase concentrated winding coils 6 in series in parallel. Similarly, each of the V-phase windings 21 is configured by connecting in parallel twelve coil groups formed by connecting two adjacent U-phase concentrated winding coils 6 in series. Reference numeral 22 denotes a configuration in which twelve coil groups formed by connecting two adjacent U-phase concentrated winding coils 6 in series are connected in parallel. As shown in FIG. 3, the stator coil 5 has a U-phase winding 20, a V-phase winding 21 and a W-phase winding 22 that are configured in this manner connected in a Y-direction that is one of three-phase AC connections. Composed.
 ここで、U相口出し用電線10に結線されたU相の集中巻コイル6が、U相巻線20の入力側の第1コイルとなる。また、V相口出し用電線11に結線されたV相の集中巻コイル6が、V相巻線21の入力側の第1コイルとなる。さらに、W相口出し用電線12に結線されたW相の集中巻コイル6が、W相巻線22の入力側の第1コイルとなる。中性点結線用電線13に結線されたU相、V相およびW相の集中巻コイル6がU相巻線20、V相巻線21およびW相巻線22の最終コイルとなる。 Here, the U-phase concentrated winding coil 6 connected to the U-phase lead-out wire 10 becomes the first coil on the input side of the U-phase winding 20. Further, the V-phase concentrated winding coil 6 connected to the V-phase lead-out wire 11 serves as the first coil on the input side of the V-phase winding 21. Furthermore, the W-phase concentrated winding coil 6 connected to the W-phase lead-out wire 12 serves as the first coil on the input side of the W-phase winding 22. The U-phase, V-phase, and W-phase concentrated winding coils 6 connected to the neutral point connection wire 13 are the final coils of the U-phase winding 20, the V-phase winding 21, and the W-phase winding 22.
 このように作製されたステータ1は、フレーム内に回転可能に配設されたロータの外周側にロータを取り囲むように配設され、インバータにより変換された三相交流電力が、U相口出し用電線10、V相口出し用電線11およびW相口出し用電線12に供給されて、三相交流電動機として動作する。 The stator 1 manufactured in this manner is disposed so as to surround the rotor on the outer peripheral side of the rotor rotatably disposed in the frame, and the three-phase AC power converted by the inverter is used as the U-phase lead wire. 10, supplied to the V-phase lead wire 11 and the W-phase lead wire 12 to operate as a three-phase AC motor.
 ここで、集中巻コイル6においては、被覆導線7をティース4に密に巻き回して構成されているので、巻き始めの第1ターンからの延出部と最終ターンからの延出部が接触、あるいは近接している。また、巻き始めの第1ターンと最終ターンとの間の電位差が最も高くなる。そこで、インバータでサージ電圧が発生すると、ステータコイル5の入力端子電圧、すなわちU相巻線20、V相巻線21およびW相巻線22の入力側の第1コイルの第1ターンの電位が高くなる。その結果、U相巻線20、V相巻線21およびW相巻線22の入力側の第1コイルにおける第1ターンからの延出部と最終ターンからの延出部の交差部の電位差が最も大きくなり、その交差部で部分放電が発生し、最悪の場合、絶縁破壊に至ることになる。 Here, since the concentrated winding coil 6 is configured by closely winding the coated conducting wire 7 around the teeth 4, the extending portion from the first turn at the beginning of winding and the extending portion from the final turn are in contact with each other. Or they are close. Further, the potential difference between the first turn at the start of winding and the final turn becomes the highest. Therefore, when a surge voltage is generated in the inverter, the input terminal voltage of the stator coil 5, that is, the potential of the first turn of the first coil on the input side of the U-phase winding 20, V-phase winding 21 and W-phase winding 22 is set. Get higher. As a result, the potential difference between the extended portion from the first turn and the extended portion from the last turn in the first coil on the input side of the U-phase winding 20, V-phase winding 21 and W-phase winding 22 is It becomes the largest, and a partial discharge occurs at the intersection. In the worst case, dielectric breakdown occurs.
 この実施の形態1では、絶縁チューブ15がU相巻線20、V相巻線21およびW相巻線22の入力側の第1コイルの巻き始めの第1ターンからの延出部の根元側に装着され、第1コイルの第1ターンからの延出部と最終ターンからの延出部との交差部に配置されている。そこで、サージ電圧がインバータで発生し、第1コイルの第1ターンの電位が高くなっても、第1コイルの巻き始めの第1ターンからの延出部と最終ターンからの延出部との交差部での部分放電の発生を抑制でき、絶縁劣化を防止することができる。 In the first embodiment, the insulating tube 15 is on the root side of the extension from the first turn of the first coil on the input side of the U-phase winding 20, V-phase winding 21 and W-phase winding 22. The first coil is disposed at the intersection of the extension from the first turn and the extension from the last turn. Therefore, even if a surge voltage is generated in the inverter and the potential of the first turn of the first coil increases, the extension from the first turn at the beginning of winding of the first coil and the extension from the last turn Generation of partial discharge at the intersection can be suppressed and insulation deterioration can be prevented.
 したがって、この実施の形態1によれば、耐サージ性を付与された被覆導線を用いる必要がないので、安価に耐サージ性を向上させることができるとともに、巻線スペースが拡大し、占積率を高めることができる。 Therefore, according to the first embodiment, since it is not necessary to use a coated conductor with surge resistance, the surge resistance can be improved at a low cost, and the winding space is increased, and the space factor is increased. Can be increased.
 また、保護チューブ16がU相巻線20、V相巻線21およびW相巻線22の入力側の第1コイルの巻き始めの第1ターンからの延出部に結線部18に至るように装着されているので、外力が第1コイルの巻き始めの第1ターンから延出する被覆導線7の部分に作用することに起因する絶縁被膜の損傷発生が抑制され、優れた電気絶縁性が得られる。さらに、保護チューブ16が絶縁チューブ15の結線部18側を覆うように第1ターンからの延出部に装着されているので、第1ターンから延出する被覆導線7の部分が外部に露出せず、外力による絶縁被膜の損傷発生が抑制される。 Further, the protective tube 16 reaches the connection portion 18 to the extension portion from the first turn of the first coil on the input side of the U-phase winding 20, the V-phase winding 21 and the W-phase winding 22. Since it is mounted, the occurrence of damage to the insulating coating due to the external force acting on the portion of the coated conductor 7 extending from the first turn at the start of winding of the first coil is suppressed, and excellent electrical insulation is obtained. It is done. Further, since the protective tube 16 is attached to the extending portion from the first turn so as to cover the connection portion 18 side of the insulating tube 15, the portion of the covered conducting wire 7 extending from the first turn is exposed to the outside. Therefore, the occurrence of damage to the insulating film due to external force is suppressed.
 ここで、絶縁チューブ15が保護チューブ16からU相、V相およびW相口出し用電線10,11,12との結線部18側に突き出ていると、U相巻線20、V相巻線21およびW相巻線22の入力側の第1コイルの巻き始めの第1ターンからの延出部をU相、V相およびW相口出し用電線10,11,12に結線する際に、作業者が絶縁チューブ15をさわって結線部18側に引っ張り、第1ターンからの延出部の根元側を露出させる危険性がある。そして、第1ターンからの延出部の根元側が露出すると、第1コイルの第1ターンからの延出部と最終ターンからの延出部とが接し、耐サージ性を悪化させることになる。 Here, when the insulating tube 15 protrudes from the protective tube 16 to the connection portion 18 side with the U-phase, V-phase, and W-phase lead-out wires 10, 11, and 12, the U-phase winding 20 and the V-phase winding 21. When connecting the extended portion from the first turn of the first coil on the input side of the W-phase winding 22 to the U-phase, V-phase and W-phase lead wires 10, 11, 12 However, there is a risk of touching the insulating tube 15 and pulling it toward the connecting portion 18 side to expose the root side of the extending portion from the first turn. And if the base side of the extension part from a 1st turn is exposed, the extension part from the 1st turn and extension part from the last turn of a 1st coil will contact, and surge resistance will deteriorate.
 この実施の形態1では、絶縁チューブ15が保護チューブ16からU相、V相およびW相口出し用電線10,11,12との結線部18側に突き出ていないので、作業者が絶縁チューブ15をさわって結線部18側に引っ張り、第1ターンからの延出部の根元側を露出させるような事態の発生を回避できる。 In the first embodiment, since the insulating tube 15 does not protrude from the protective tube 16 to the connection portion 18 side with the U-phase, V-phase, and W-phase lead-out wires 10, 11, 12, the operator pulls the insulating tube 15. It is possible to avoid the occurrence of such a situation that it is touched and pulled toward the connecting portion 18 to expose the base side of the extending portion from the first turn.
 また、保護チューブ16が、中性点結線用電線13に結線される集中巻コイル6の最終ターンからの延出部の根元側から結線部18に至るように装着されているので、最終ターンから延出する被覆導線7の部分が外部に露出せず、外力による絶縁被膜の損傷発生が抑制される。 Further, since the protective tube 16 is mounted so as to reach the connection portion 18 from the base side of the extension portion from the last turn of the concentrated winding coil 6 connected to the neutral point connection wire 13, from the last turn The portion of the coated conductor 7 that extends is not exposed to the outside, and the occurrence of damage to the insulating coating due to external force is suppressed.
 ここで、ステータ1の組み立て工程において、絶縁チューブ15の装着忘れ、や装着位置を簡易に目視確認できるように、各相において、絶縁チューブ15を、被覆導線7および保護チューブ16の色と異なる色とすることが望ましい。特に、絶縁チューブ15の色を、被覆導線7および保護チューブ16の色と色相スケールで120度以上離れた色とすることで、絶縁チューブ15の識別が容易となる。
 また、絶縁チューブ15や保護チューブ16の色は、相毎に変えてもよいし、同じでもよい。
Here, in the assembly process of the stator 1, the insulating tube 15 is a color different from the colors of the coated conductor 7 and the protective tube 16 in each phase so that the mounting of the insulating tube 15 can be forgotten or the mounting position can be easily visually confirmed. Is desirable. In particular, the insulation tube 15 can be easily identified by setting the color of the insulation tube 15 to be 120 degrees or more away from the color of the coated conductor 7 and the protection tube 16 on the hue scale.
Further, the colors of the insulating tube 15 and the protective tube 16 may be changed for each phase or the same.
 なお、上記実施の形態1では、72本のティースを有するステータコアを用いているが、ステータコアのティースの本数は72本に限定されない。
 また、上記実施の形態1では、2つ集中巻コイルを直列に接続した12個のコイル群を並列に接続して相巻線を構成しているが、相巻線は、4つの集中巻コイルを直列に接続した6個のコイル群を並列に接続しても構成してもよいし、24個の集中巻コイルを直列に接続して構成してもよい。
In the first embodiment, a stator core having 72 teeth is used, but the number of teeth of the stator core is not limited to 72.
In the first embodiment, twelve coil groups in which two concentrated winding coils are connected in series are connected in parallel to form a phase winding, but the phase winding has four concentrated winding coils. Six coil groups connected in series may be connected in parallel, or 24 concentrated winding coils may be connected in series.
 また、上記実施の形態1では、U相巻線、V相巻線およびW相巻線の第1コイルの第1ターンからの延出部および最終コイルの最終ターンからの延出部に保護チューブを装着しているが、全ての集中巻コイルの第1ターンおよび最終ターンからの延出部に保護チューブを装着してもよい。 In the first embodiment, the protective tube is provided at the extension portion from the first turn of the first coil and the extension portion from the last turn of the final coil of the U-phase winding, V-phase winding and W-phase winding. However, you may attach a protection tube to the extension part from the 1st turn and the last turn of all the concentrated winding coils.
 また、上記実施の形態1では、ステータコイルがU相巻線、V相巻線およびW相巻線を三相交流結線の一つであるY結線して構成されているが、ステータコイルは、U相巻線、V相巻線およびW相巻線を他の三相交流結線、例えばΔ結線して構成してもよい。この場合、Δ結線されたU相巻線、V相巻線およびW相巻線の結線部がそれぞれ入力端となるので、各入力端側に位置する第1コイル(集中巻コイル)の巻き始めの第1ターンからの延出部の根元側に絶縁チューブを装着すればよい。 In the first embodiment, the stator coil is configured by connecting the U-phase winding, the V-phase winding, and the W-phase winding to the Y connection that is one of the three-phase AC connections. The U-phase winding, V-phase winding, and W-phase winding may be configured by other three-phase AC connections, for example, Δ connections. In this case, since the connection portions of the U-phase winding, V-phase winding and W-phase winding that are Δ-connected serve as input ends, the winding start of the first coil (concentrated winding coil) located on each input end side is started. What is necessary is just to attach an insulating tube to the base side of the extension part from the 1st turn.
 また、上記実施の形態1では、ステータが電動機に適用される場合について説明しているが、ステータは、電動機に限らず、発電機や電動発電機などの回転電機に適用されてもよい。 In the first embodiment, the case where the stator is applied to an electric motor has been described. However, the stator may be applied not only to the electric motor but also to a rotating electric machine such as a generator or a motor generator.

Claims (5)

  1.  円環状のヨーク、およびそれぞれ上記ヨークの内周面から径方向内方に延出して周方向に配列された複数のティースを有するステータコアと、
     被覆導線を上記複数のティースのそれぞれに巻回して作製された集中巻コイルを三相交流結線して構成されたステータコイルと、を備えた回転電機のステータにおいて、
     絶縁チューブが、上記ステータコイルの各相巻線の入力側から1番目の上記集中巻コイルの巻き始めの第1ターンからの延出部の根元側に装着されて、上記1番目の集中巻コイルの巻き始めの第1ターンからの延出部と最終ターンからの延出部との交差部に配置されていることを特徴とする回転電機のステータ。
    An annular yoke, and a stator core having a plurality of teeth each extending radially inward from the inner circumferential surface of the yoke and arranged in the circumferential direction;
    In a stator of a rotating electrical machine comprising: a stator coil configured by three-phase alternating current connection of concentrated winding coils produced by winding a coated conductor around each of the plurality of teeth;
    An insulating tube is mounted on the base side of the extension from the first turn of the first concentrated winding coil from the input side of each phase winding of the stator coil, and the first concentrated winding coil A stator for a rotating electrical machine, wherein the stator is disposed at an intersection between an extension portion from the first turn at the start of winding and an extension portion from the last turn.
  2.  保護チューブが、上記1番目の集中巻コイルの巻き始めの第1ターンからの延出部に装着されていることを特徴とする請求項1記載の回転電機のステータ。 The stator for a rotating electrical machine according to claim 1, wherein a protective tube is attached to an extension portion from the first turn of the first concentrated winding coil.
  3.  上記保護チューブが、上記絶縁チューブの少なくとも一部を覆うように、上記1番目の集中巻コイルの巻き始めの第1ターンからの延出部に装着されていることを特徴とする請求項2記載の回転電機のステータ。 3. The protection tube is attached to an extension portion from the first turn at the beginning of winding of the first concentrated winding coil so as to cover at least a part of the insulating tube. The stator of a rotating electrical machine.
  4.  上記絶縁チューブは、上記保護チューブから、上記1番目の集中巻コイルの巻き始めの第1ターンからの延出部の根元側と反対側に延出していないことを特徴とする請求項3記載の回転電機のステータ。 The said insulation tube is not extended from the said protection tube to the opposite side to the base side of the extension part from the 1st turn of the winding start of the said 1st concentrated winding coil, The characterized by the above-mentioned. A stator for rotating electrical machines.
  5.  上記絶縁チューブの色が、上記被覆導線の色および当該絶縁チューブが装着されている上記1番目の集中巻コイルの巻き始めの第1ターンからの延出部に装着されている上記保護チューブの色と異なっていることを特徴とする請求項2から請求項4のいずれか1項に記載の回転電機のステータ。 The color of the insulating tube is the color of the coated conductor and the color of the protective tube attached to the extension from the first turn of the first concentrated coil to which the insulating tube is attached. The stator for a rotating electrical machine according to any one of claims 2 to 4, wherein the stator is different from the stator.
PCT/JP2013/064492 2013-05-24 2013-05-24 Rotating electric machine stator WO2014188588A1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0984289A (en) * 1995-09-12 1997-03-28 Fuji Electric Co Ltd Insulated coil for inverter driven electric rotating machine
JP2001103698A (en) * 1999-09-30 2001-04-13 Aisin Seiki Co Ltd Stator for motor
JP2007151353A (en) * 2005-11-30 2007-06-14 Toyota Motor Corp Cassette coil and rotating electric machine equipped therewith
JP2009124784A (en) * 2007-11-12 2009-06-04 Mitsubishi Electric Corp Magneto generator
JP2012120405A (en) * 2010-12-03 2012-06-21 Nippon Soken Inc Three-phase ac motor
WO2013061902A1 (en) * 2011-10-27 2013-05-02 住友電気工業株式会社 Coil segments, method for manufacturing coil segments, and stator using coil segments

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0984289A (en) * 1995-09-12 1997-03-28 Fuji Electric Co Ltd Insulated coil for inverter driven electric rotating machine
JP2001103698A (en) * 1999-09-30 2001-04-13 Aisin Seiki Co Ltd Stator for motor
JP2007151353A (en) * 2005-11-30 2007-06-14 Toyota Motor Corp Cassette coil and rotating electric machine equipped therewith
JP2009124784A (en) * 2007-11-12 2009-06-04 Mitsubishi Electric Corp Magneto generator
JP2012120405A (en) * 2010-12-03 2012-06-21 Nippon Soken Inc Three-phase ac motor
WO2013061902A1 (en) * 2011-10-27 2013-05-02 住友電気工業株式会社 Coil segments, method for manufacturing coil segments, and stator using coil segments

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