WO2014050164A1 - 電気機械 - Google Patents
電気機械 Download PDFInfo
- Publication number
- WO2014050164A1 WO2014050164A1 PCT/JP2013/054900 JP2013054900W WO2014050164A1 WO 2014050164 A1 WO2014050164 A1 WO 2014050164A1 JP 2013054900 W JP2013054900 W JP 2013054900W WO 2014050164 A1 WO2014050164 A1 WO 2014050164A1
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- WIPO (PCT)
- Prior art keywords
- slot
- conductor
- thickness
- electric machine
- insulating
- Prior art date
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
Definitions
- the present invention relates to an electric machine such as a rotating electric machine such as a generator or an electric motor, or a linear motion machine such as a linear motor, and more particularly to an armature winding structure capable of obtaining a high insulation performance and a high space factor.
- a rotating electrical machine mounted on a vehicle is required to be reduced in size as the space for mounting the rotating electrical machine in the engine room of the vehicle is reduced, and to improve the power generation output by increasing the vehicle load. Furthermore, improvement in reliability is required.
- the separation distance between the conductor portion of the armature winding and the core back of the armature core is the minimum necessary to ensure the insulation performance. Even if the distance (insulation distance) can be set, the separation distance between the conductor portion of the armature winding and the teeth of the armature core is not the insulation distance. As a result, there has been a problem that the space factor is lowered and high output cannot be achieved.
- the present invention has been made in order to solve the above-described problem.
- the thickness of the insulating coating in the slot depth direction of the conductor wires accommodated in the slot so as to be aligned in the slot depth direction and in the slot arrangement direction.
- the thickness of the insulation coating can be set independently from the insulation distance between the conductor parts and the insulation distance between the conductor parts and the armature core, respectively, while ensuring the insulation performance, It is an object to obtain an electric machine that can improve the quality and achieve high output.
- a rotating electric machine includes an armature core having a plurality of slots arranged in the slot width direction, and an armature having an armature winding formed by winding the conductor wire around the slot.
- the conductor wire includes a conductor portion having a rectangular cross section and an insulating film formed so as to cover the outer periphery of the conductor portion, and the length direction of the long side or the short side of the rectangular cross section of the conductor portion is slotted.
- the thickness t 1 of the portion of the insulating coating formed on the surface of the conductor portion facing the slot depth direction is equal to the thickness of the insulating coating formed on the surface of the conductor portion facing the slot arrangement direction. It is thinner than the thickness t 2 of the part. Therefore, t 1 and t 2 can be set independently from the insulation distance between the conductor portions in the slot depth direction and the insulation distance between the conductor portions and the armature core, while ensuring insulation performance. , Can improve the space factor.
- FIG. 1 is a half sectional view showing a rotating electrical machine according to Embodiment 1 of the present invention
- FIG. 2 is a sectional view showing armature windings in the rotating electrical machine according to Embodiment 1 of the present invention
- FIG. FIG. 6 is a cross-sectional view for explaining a slot accommodation state of armature windings in the rotary electric machine according to Embodiment 1.
- a rotating electrical machine 100 includes a housing 1 having a bottomed cylindrical frame 2 and an end plate 3 closing an opening of the frame 2, and an armature 10 fixed to the cylindrical portion of the frame 2 in an internally fitted state.
- a rotor 5 fixed to a rotary shaft 6 rotatably supported on a bottom portion of the frame 2 and the end plate 3 via a bearing 4 and rotatably disposed on an inner peripheral side of the armature 10; It has.
- the rotor 5 includes a rotor core 7 fixed to a rotary shaft 6 inserted through the shaft center position, and is embedded in the outer peripheral surface side of the rotor core 7 so as to penetrate in the axial direction and have a predetermined pitch in the circumferential direction.
- the permanent magnets 8 arranged in the above. The permanent magnets 8 are arranged so that the magnetic poles are alternately different in the circumferential direction.
- the armature 10 includes an annular armature core 11 having slots opened on the inner peripheral side and arranged at an equiangular pitch in the circumferential direction, and an armature winding 12 attached to the armature core 11. .
- the armature core 11 is produced, for example, by laminating and integrating electromagnetic steel sheets punched into a predetermined shape, and extends inward in the radial direction from the inner peripheral surface of the core back 11a. And teeth 11b arranged at an equiangular pitch in the circumferential direction. A space defined by the core back 11a and the adjacent teeth 11b becomes a slot 11c.
- the circumferential direction of the armature core 11 corresponds to the slot width direction, that is, the arrangement direction of the slots 11c.
- the radial direction of the armature core 11 corresponds to the slot depth direction.
- the conductor wire 13 constituting the armature winding 12 includes a copper conductor portion 13a having a rectangular cross section, and an insulating film 13b coated so as to cover the outer periphery of the conductor portion 13a.
- an insulating resin such as polyamide, polypropylene, polytetrafluoroethylene, polyamideimide, polyester, polyimide, or polyacetal is used as the material of the insulating coating 13b.
- the conductor wire 13 is produced, for example, by coating the outer periphery of a conductor wire having a square cross section with an insulating resin and baking it.
- the conductor wires 13 are accommodated in five layers in the slots 11 c, aligned in a row in the radial direction, with the short side length direction of the rectangular cross section aligned with the radial direction.
- a plane formed by the long sides of the rectangular cross section of the conductor portion 13a faces in the radial direction. Therefore, a portion of the insulating coating 13b covered with a plane constituted by the long side of the rectangular cross section of the conductor portion 13a is defined as a radial surface insulating coating.
- the plane comprised by the short side of the rectangular cross section of the conductor part 13a has faced the circumferential direction.
- a portion of the insulating coating 13b covered with a plane constituted by the short sides of the rectangular cross section of the conductor portion 13a is defined as a circumferential surface insulating coating.
- Conductor wire 13 is housed in contact with the radial surface insulating film of thickness t 1, the five layers in the radial direction in the slots 11c to each other.
- each of the conductor wires 13 housed in the five layers in the radial direction in the slot 11c in contact with the inner peripheral surface of the slot 11c through the circumferential surface insulating film thickness t 2.
- a gap 16 is formed between the conductor wire 13 located at the deepest portion in the slot depth direction and the bottom surface of the slot 11c.
- FIG. 4 is a cross-sectional view for explaining the slot accommodation state of the armature winding in the rotating electric machine of the comparative example.
- the conductor wire 20 includes a conductor portion 20 a having a rectangular cross section and an insulating film 20 b that is coated so as to cover the outer periphery of the conductor portion 20 a. Then, the thickness t 3 of the portion of the insulating coating 20b covered by the plane constituted by the long side of the rectangular cross section of the conductor portion 20a is insulated by the plane constituted by the short side of the rectangular cross section of the conductor portion 20a. It is equal to the thickness t 4 of the portion of the coating 20b.
- the conductor line 20 is to match the short-side length direction of the rectangular cross-section in the radial direction, in a row in a radial direction, housed in five layers within a slot 11c for insulating sheet 21 is attached with a thickness t 5 Has been.
- the plane constituted by the long side of the rectangular cross section of the conductor portion 20a is directed in the radial direction, and the plane constituted by the short side of the rectangular cross section of the conductor portion 20a is oriented in the circumferential direction. Therefore, the portion of the insulating coating 20b covered by the plane constituted by the long side of the rectangular cross section of the conductor portion 20a is used as the radial surface insulating coating, and the portion constituted by the short side of the rectangular cross section of the conductor portion 20a is covered. The portion of the insulating coating 20b is used as the circumferential surface insulating coating.
- Conductor wire 20 is housed in contact with the radial surface insulating film of thickness t 3, the five layers in the radial direction in the slots 11c to each other.
- Each of the conductor wires 20 accommodated in five layers in the radial direction in the slot 11c is in contact with the inner peripheral side surface (the teeth 11b) of the slot 11c via the insulating sheet 21.
- the conductor portion 20a located at the deepest portion of the slot 11c is in contact with the bottom surface (core back 11a) of the slot 11c via the insulating sheet 21.
- the thickness t 3 of the radial surface insulating coating is set so as to satisfy t 3 ⁇ L 1/2 .
- the thickness t 5 of the thickness t 4 of the circumferential surface insulating coating insulating sheet 21 is set so as to satisfy t 4 + t 5 ⁇ L 2 .
- the thickness t 1 of the radial surface insulating coating is set so as to satisfy t 1 ⁇ L 1/2 .
- the thickness t 2 of the circumferential surface insulating coating is set so as to satisfy t 2 ⁇ L 2 .
- the gap d of the gap 16 is set so as to satisfy d ⁇ L 2 ⁇ t 1 .
- the separation distance between the conductor portion 13a and the core back 11a is (t 1 + d).
- d ⁇ L 2 ⁇ t 1 d ⁇ L 2 ⁇ t 1
- t 1 + d ⁇ t 1 + L 2 ⁇ t 1 L 2 . Therefore, an insulation distance L 2 can be ensured between the conductor portion 13a and the core back 11a. Further, since it is t 2> t 1, by setting the t 2 the insulation distance L 2, between the conductor portion 13a and the teeth 11b can be secured insulation distance L 2.
- the thickness t 1 of the radial surface insulating coating and the thickness t 2 of the circumferential surface insulating coating are set to the insulation distance L 1 between the conductor portions 13 a, the conductor portions 13 a, and the armature. It can be set independently from the insulation distance L 2 from the iron core 11. That is, the thickness t 1 of the radial surface insulation coating and the thickness t 2 of the circumferential surface insulation coating can be set so that the insulation distance L 1 and the insulation distance L 2 can be secured. The rate can be increased. Therefore, it is possible to improve the quality of the rotating electrical machine 100 and increase the output.
- the dielectric breakdown voltage and ground the withstand voltage between the conductor wires 13 is equal to the largest space factor Can do.
- the gap d of the gap 16 is not less than (t 2 -t 1 )
- FIG. FIG. 5 is a cross-sectional view for explaining the slot accommodation state of the armature winding in the rotary electric machine according to Embodiment 2 of the present invention.
- the insulating paper 14 is interposed only between the conductor portion 13a located at the deepest portion of the slot 11c and the core back 11a.
- Other configurations are the same as those in the first embodiment.
- the insulating paper 14 is interposed between the conductor portion 13a located at the deepest portion of the slot 11c and the core back 11a. Therefore, when the conductor wires 13 are arranged in a row in the radial direction and are accommodated in the slots 11c, a separation distance between the conductor portion 13a located at the deepest portion of the slot 11c and the core back 11a is ensured with high accuracy. Can do. Therefore, by setting the thickness of the insulating paper 14 to (t 2 ⁇ t 1 ), it is possible to secure an insulating distance L 2 between the conductor portion 13a located at the deepest portion of the slot 11c and the core back 11a. And insulation performance can be ensured.
- the insulating paper 14 can be interposed only between the conductor portion 13a located at the deepest portion of the slot 11c and the core back 11a, and the amount of the insulating paper 14 used can be minimized. In addition, it is not necessary to bend the insulating paper 14, and productivity is improved.
- FIG. FIG. 6 is a cross-sectional view showing conductor wires constituting the armature winding in the rotary electric machine according to Embodiment 3 of the present invention
- FIG. 7 shows the armature winding in the rotary electric machine according to Embodiment 3 of the present invention. It is sectional drawing explaining the manufacturing method of the conductor wire to do.
- the conductor wire 13A includes a conductor portion 13a and an insulating coating 13c coated on the outer periphery of the conductor portion 13a.
- Other configurations are the same as those in the first embodiment.
- a rectangular long insulating tape 15 is composed of a plane composed of one long side of the rectangular cross section of the conductor portion 13a made of a metal material such as copper and both short sides. Affix to a plane composed of As a result, as shown in FIG. 7, the three planes of the conductor portion 13 a are covered with the insulating tape 15. Subsequently, the insulating tape 15 is affixed on the plane comprised by the other long side of the rectangular cross section of the conductor part 13a, and the plane comprised by both short sides. Thereby, as shown in FIG. 6, the insulating tape 15 was affixed to a plane composed of the long sides of the rectangular cross section and was affixed to a plane composed of the short sides of the rectangular cross section. A conductor wire 13A is produced.
- the insulating film 13c is produced by attaching the insulating tape 15 to the conductor portion 13a, the insulating film formed on the plane constituted by the long side of the rectangular cross section of the conductor portion 13a.
- the thickness of 13c and the thickness of the insulating coating 13c formed on the plane constituted by the short sides can be configured easily and with high accuracy, and the productivity of the conductor wire 13A can be improved.
- the conductor wire is stored in the slot in a row in the radial direction with the short side length direction of the rectangular cross section directed in the radial direction.
- the long side length direction of the rectangular cross section may be stored in the slot side by side in a line in the radial direction.
- the thickness of the portion of the insulating coating (circumferential surface insulating coating) formed on the plane constituted by the long side of the rectangular cross section of the conductor wire is set to the plane constituted by the short side of the rectangular cross section of the conductor wire. What is necessary is just to make it thicker than the thickness of the part (diameter direction surface insulating film) of the insulating film currently formed.
- the conductor wires are arranged in a single row in the radial direction and accommodated in multiple layers in the slot.
- the conductor wires are arranged in a multilayer in one row in the radial direction. They may be arranged in a plurality of rows in the direction and stored in the slots.
- each said embodiment demonstrated the rotary electric machine used for an electric motor or a generator, even if it applies this invention to linear motion machines, such as a linear motor, there exists the same effect.
Abstract
Description
図1はこの発明の実施の形態1に係る回転電機を示す片側断面図、図2はこの発明の実施の形態1に係る回転電機における電機子巻線を示す断面図、図3はこの発明の実施の形態1に係る回転電機における電機子巻線のスロット収納状態を説明する断面図である。
また、導体部13aとティース11bとの間に、絶縁距離L2を確保する必要がある。そこで、周方向面絶縁被膜の厚みt2は、t2≧L2を満足するように設定される。
さらに、スロット11cの最深部に位置する導体部13aとコアバック11aとの間に、絶縁距離L2を確保する必要がある。そこで、空隙16の隙間dは、d≧L2-t1を満足するように設定される。
また、t2>t1であるので、t2を絶縁距離L2に設定すれば、導体部13aとティース11bとの間に絶縁距離L2を確保することができる。
空隙16の隙間dを、(t2-t1)以上に形成することにより、絶縁紙を介装することなく、導体線13とコアバック11aとの間の絶縁距離L2を確保することができる。そこで、スロット11c内に絶縁シート21を装着する必要もないので、電機子10の製造工程を簡略化できる。
図5はこの発明の実施の形態2に係る回転電機における電機子巻線のスロット収納状態を説明する断面図である。
なお、他の構成は、上記実施の形態1と同様に構成されている。
図6はこの発明の実施の形態3に係る回転電機における電機子巻線を構成する導体線を示す断面図、図7はこの発明の実施の形態3に係る回転電機における電機子巻線を構成する導体線の製造方法を説明する断面図である。
なお、他の構成は、上記実施の形態1と同様に構成されている。
また、上記各実施の形態では、電動機や発電機に用いられる回転電機について説明しているが、本発明は、リニアモータなどの直動機に適用しても、同様の効果を奏する。
Claims (4)
- スロットがスロット幅方向に複数配列された電機子鉄心、および導体線を上記スロットに巻装して構成される電機子巻線を有する電機子を備えた電気機械において、
上記導体線は、長方形断面を有する導体部と、上記導体部の外周を覆うように形成された絶縁被膜と、を備え、上記導体部の長方形断面の長辺又は短辺の長さ方向をスロット深さ方向に向けて、スロット配列方向に少なくとも1列に並んで、各列のスロット深さ方向に互いに接して多層に配列されて、上記スロット内に収納され、
上記導体部のスロット深さ方向に向いた面に形成されている上記絶縁被膜の部位の厚みをt1、上記導体部のスロット配列方向に向いた面に形成されている上記絶縁被膜の部位の厚みをt2としたときに、上記絶縁被膜は、t1<t2を満足するように形成されていることを特徴とする電気機械。 - t1=t2/2であることを特徴とする請求項1記載の電気機械。
- 絶縁紙が、スロット深さ方向の最深位置の上記導体線と上記スロットの底面との間にのみ介装されていることを特徴とする請求項1又は請求項2記載の電気機械。
- 空隙がスロット深さ方向の最深位置の上記導体線と上記スロットの底面との間に形成され、上記空隙は、(t2-t1)以上の隙間を有していることを特徴とする請求項1又は請求項2記載の電気機械。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201380050173.8A CN104662779B (zh) | 2012-09-26 | 2013-02-26 | 电力机械 |
JP2014538209A JP5972387B2 (ja) | 2012-09-26 | 2013-02-26 | 電気機械 |
US14/427,713 US9831734B2 (en) | 2012-09-26 | 2013-02-26 | Electric machine |
DE112013004722.5T DE112013004722T5 (de) | 2012-09-26 | 2013-02-26 | Elektrische Maschine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012212669 | 2012-09-26 | ||
JP2012-212669 | 2012-09-26 |
Publications (1)
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WO2014050164A1 true WO2014050164A1 (ja) | 2014-04-03 |
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PCT/JP2013/054900 WO2014050164A1 (ja) | 2012-09-26 | 2013-02-26 | 電気機械 |
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US (1) | US9831734B2 (ja) |
JP (1) | JP5972387B2 (ja) |
CN (1) | CN104662779B (ja) |
DE (1) | DE112013004722T5 (ja) |
WO (1) | WO2014050164A1 (ja) |
Cited By (1)
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JP2017163666A (ja) * | 2016-03-08 | 2017-09-14 | 本田技研工業株式会社 | ステータ用巻線およびステータ |
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CN109256884A (zh) * | 2017-10-13 | 2019-01-22 | 朱卫 | 一种用钛金属生产的马达外壳 |
WO2019227116A1 (de) * | 2018-05-29 | 2019-12-05 | Miba Aktiengesellschaft | Elektrischer leiter zur verwendung in elektrischen maschinen |
AT521301B1 (de) | 2018-05-29 | 2020-04-15 | Miba Ag | Stator mit Isolationsschicht |
AT523257A1 (de) * | 2018-05-29 | 2021-06-15 | Miba Emobility Gmbh | Stator mit Isolationsschicht |
FR3082372B1 (fr) * | 2018-06-07 | 2022-06-03 | Leroy Somer Moteurs | Stator de machine electrique tournant |
IT202000002263A1 (it) | 2020-02-05 | 2021-08-05 | Ferrari Spa | Macchina elettrica rotante con isolamento di cava perfezionato |
US20210367483A1 (en) * | 2020-05-19 | 2021-11-25 | Ge Aviation Systems Llc | Method and system for thermally insulating portions of a stator core |
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JP3155534B1 (ja) * | 2000-01-20 | 2001-04-09 | 三菱電機株式会社 | 交流発電機の固定子 |
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2013
- 2013-02-26 DE DE112013004722.5T patent/DE112013004722T5/de not_active Withdrawn
- 2013-02-26 CN CN201380050173.8A patent/CN104662779B/zh active Active
- 2013-02-26 JP JP2014538209A patent/JP5972387B2/ja active Active
- 2013-02-26 WO PCT/JP2013/054900 patent/WO2014050164A1/ja active Application Filing
- 2013-02-26 US US14/427,713 patent/US9831734B2/en active Active
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JPS59144346A (ja) * | 1983-02-07 | 1984-08-18 | Yaskawa Electric Mfg Co Ltd | 回転電機巻線の絶縁方法 |
JP2004236441A (ja) * | 2003-01-30 | 2004-08-19 | Honda Motor Co Ltd | 固定子 |
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JP2017163666A (ja) * | 2016-03-08 | 2017-09-14 | 本田技研工業株式会社 | ステータ用巻線およびステータ |
Also Published As
Publication number | Publication date |
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JP5972387B2 (ja) | 2016-08-17 |
CN104662779B (zh) | 2018-01-16 |
CN104662779A (zh) | 2015-05-27 |
US9831734B2 (en) | 2017-11-28 |
DE112013004722T5 (de) | 2015-06-11 |
JPWO2014050164A1 (ja) | 2016-08-22 |
US20150249372A1 (en) | 2015-09-03 |
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