EP3446397A1 - Procédé de fabrication d'un stator pour une machine synchrone ou asynchrone - Google Patents

Procédé de fabrication d'un stator pour une machine synchrone ou asynchrone

Info

Publication number
EP3446397A1
EP3446397A1 EP17715942.3A EP17715942A EP3446397A1 EP 3446397 A1 EP3446397 A1 EP 3446397A1 EP 17715942 A EP17715942 A EP 17715942A EP 3446397 A1 EP3446397 A1 EP 3446397A1
Authority
EP
European Patent Office
Prior art keywords
coils
coil
grooves
layer
stator
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.)
Withdrawn
Application number
EP17715942.3A
Other languages
German (de)
English (en)
Inventor
Dragoljub Duricic
Zakaria El Khawly
Thorsten Rienecker
Burghard Baier
Andreas Mayr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP3446397A1 publication Critical patent/EP3446397A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/16—Stator cores with slots for windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/024—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with slots
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/08—Forming windings by laying conductors into or around core parts
    • H02K15/085—Forming windings by laying conductors into or around core parts by laying conductors into slotted stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots

Definitions

  • the present invention relates to a manufacturing method for
  • the invention relates to a stator obtainable by such a manufacturing method.
  • Asynchronous machines are produced by coils are mounted on a support body and then the support body is inserted into the stator so that the coils are drawn into corresponding grooves.
  • This object is achieved with a method for producing a stator provided for a synchronous or asynchronous machine with a
  • the method according to the invention comprises the following steps:
  • stator body Arranging a stator body, which defines an axis of rotation for a purpose in the stator to be used rotor, the Longitudinal direction of the stator body, wherein the stator body has a plurality of longitudinally extending grooves;
  • the coils are retracted into the grooves such that the coil sides of each of the coils exclusively form either the underlayer or the topsheet.
  • the stator body is preferably formed from a metal or a metal alloy having good electrical and magnetic properties.
  • the stator body is preferably designed as a hollow cylinder and has a cross-section transverse to the axis of rotation (perpendicular to the axis of rotation) in cross-section.
  • the rotor In the hollow cylinder, the rotor
  • the grooves are formed on the inside of the rotor or hollow cylinder and extend in the longitudinal direction of the rotor.
  • the coils are preferably wound in advance by a winding machine so that they have the corresponding correct dimensions for the stator body.
  • the coils are preferably produced by winding a copper wire which is coated with an insulating varnish.
  • coil side means the sections of the coils which are located inside the slots. This means that each coil has at least two coil sides located inside the slots.
  • the coils are drawn into the grooves in such a way that the corresponding coil sides either form exclusively the lower layer of the two-layer winding or the upper layer of the two-layer winding. That the coil sides of one of the coils are not in different layers of the two-layer winding.
  • the coils of the lower layer and / or the upper layer are drawn in such that the corresponding coil sides are distributed in each case on at least two grooves.
  • the coils of the underlayer and / or the upper layer are respectively formed of a first coil and a second coil having different coil widths, and the first and second coils are drawn into the slots such that coil sides of the first coil in slots of the run at least two grooves, which lie between grooves in which coil sides of the second coil run.
  • the first coil has a smaller coil width than the second coil and is completely enclosed by the second coil.
  • the grooves in which the coil sides of the first coil extend immediately adjacent to the grooves, in which extend the coil sides of the second coil.
  • the Coils of the upper layer of the plurality of m strands, in particular m 3 strands, wound.
  • the coils are drawn into the grooves in such a way that coil sides of the coils which form the lower layer and the upper layer correspond to the same pole pair and belong to the same rod, run in the same and different grooves.
  • the coils that belong to the same strand, the same pole pair, and are located in different layers of the two-layer winding, distributed over a plurality of grooves and partially over each other by the coils are mutually offset by a number of slots.
  • the coils of the underlayer and the upper layer are respectively formed of a first coil and a second coil having different coil widths.
  • the first and second coils are drawn into the grooves such that (i) coil sides of the first coil extend in grooves extending between slots in which coil sides of the second coil extend, and (ii) the coil sides of the first and second coils form the lower layer and the upper layer, correspond to the same pole pair, and belong to the same Stang, run in the same and different grooves.
  • the first and second coils which belong to the same strand correspond to the same pole pair and are in different layers of the two-layer winding, partly over each other, in that the coils of the lower layer and the upper layer are offset from one another such that coil sides of the first or second Coil in the same groove as the coil sides of lying in the other layer first or second coil.
  • the number of coils per layer and per strand is preferred
  • each strand forms four coils per layer, whereby the rotating field has four pole pairs.
  • the first and second coils which form the lower layer and upper layer, belong to the same rod and correspond to the same pole pair, are electrically connected to one another.
  • These electrically interconnected first and second coils belonging to different strands are connected to one another
  • the coils are preferably drawn into the grooves in such a way that the two-layer winding is stretched.
  • the coils are not arranged according to the pole pitch of the intended rotor or fed into the grooves.
  • the invention also relates to a stator which after the
  • the stator according to the invention is in particular one which is used for a synchronous or asynchronous machine which is intended for operation in a motor vehicle or motor vehicle.
  • Figure 1 shows a sectional view of a stator according to the invention, which is obtainable by the method according to the invention
  • Figures 2a to 2c each show a plan view of a developed view of the stator shown in Figure 1, wherein in the figures 2a to 2c the winding scheme of each one strand and the corresponding coils are shown;
  • FIGS. 3a to 3d show the sequence in which the coils are drawn into a stator body of the stator.
  • Figure 4 shows the plan view of the developed view of the stator shown in Figure 1, wherein the winding scheme of all strands is shown in superposition.
  • FIG. 1 shows a cross section of a stator 1 according to the invention, which is obtainable by a production method according to the invention.
  • Figure 1 also shows a coordinate system, wherein the perpendicular to
  • the stator 1 includes a stator body 2, which is designed as a hollow cylinder.
  • a not-shown rotor can be inserted into the stator body 2 so that it can rotate about the drawn axis of rotation A.
  • the axis of rotation A is again perpendicular to
  • the stator 1 according to the invention may be a stator for a synchronous or asynchronous machine.
  • the dimensions of the stator 1 according to the invention in directions of the X, Y and Z axes shown are dimensioned so that the stator 1 according to the invention can be used in a motor vehicle or a motorcycle as part of the drive unit.
  • the stator body 2 includes a plurality of grooves, which preferably comprise only 48 slots in the present embodiment of the stator body 2.
  • a plurality of coils are fed into the grooves so that the coils occupy all the grooves and form a two-layer winding.
  • the coils are located in the corresponding grooves some of the coils radially to the A rotation axis A outside and some of the coils radially to the axis of rotation A inside.
  • the internal coils form a top layer of the
  • Two-layer winding and the outer coils form a lower layer of the two-layer winding.
  • the stator 1 comprises, as mentioned, 3 strands which are designated in the figures 2a to 2c with U, V, W.
  • FIG. 2a the winding of the strand U is shown.
  • This strand forms eight coils, with four of the coils lying in the upper layer or forming these and the other four coils are in the lower layer or these form.
  • the coils forming the top layer are shown in dashed lines in FIGS. 2a to 2c and the coils forming the underlayer are shown in solid lines.
  • stator 1 During operation of the stator 1 according to the invention, alternating voltages are applied to the strings which are phase-shifted by 120 ° relative to one another. Each strand has four coils per layer, which is why the stator 1 according to the invention generates a rotating field during its intended operation, which has a total of four pole pairs and entrains an inserted rotor. Each coil located in the lower layer has one in the upper layer
  • the coil Uc2 is located in the underlayer of the two-layer winding, this coil Uc2 is composed of a first coil and a second coil.
  • the first coil is retracted into the grooves so that the respective coil sides extend through the grooves 23, 28.
  • the second coil of the coil Uc2, however, is retracted into the grooves, that the corresponding
  • Coil sides through the grooves 22, 29 extend.
  • the first coil and the second coil have different coil widths, wherein the grooves of the first coil are between those of the second coil, and the second coil completely rotates around the first coil.
  • the number of turns of the first coil and the number of turns of the second coil may be identical or different.
  • the first coil and the second coil are electrically connected to each other. This electrical connection is in Figure 2a with the
  • the coil Uc1 corresponding to the same pole pair is located in the upper layer or forms it.
  • This coil Uc1 is also composed of a first coil and a second coil, which are retracted into different grooves.
  • the first coil of the coil Uc1 is fed into the grooves such that the corresponding coil sides extend through the grooves 22, 27.
  • the second coil of the coil Uc1 is fed into the grooves such that the corresponding coil sides extend through the grooves 21, 28.
  • the first coil and the second coil have different coil widths, wherein the grooves of the first coil are between those of the second coil, and the second coil completely rotates around the first.
  • the number of turns of the first coil and the number of turns of the second coil may be identical or different.
  • the first coil and the second coil are electrically connected together. This electrical connection is in Figure 2a with the
  • Zone factor q 2 or the coils Uc1, Uc2 are each distributed on two grooves.
  • both coils Uc1, Uc2 are electrically connected to each other at the points Uc12 and Uc22.
  • the connection of these points is preferably only after the collection of both coils.
  • both coils Uc1, Uc2 offset from one another, so that a coil side of the first sink of the coil Uc1 in the same groove 22 as the coil side of the second coil of the coil Uc2 runs.
  • groove 28 in which the coil side of the second coil of the coil Uc1 and the coil side of the first coil of the coil Uc2 extends.
  • Figure 1 in which the corresponding reference numerals are included.
  • the coil Uc1 is connected to a neutral point 3.
  • Connection point is designated in Figure 2a by the reference numeral Uc13.
  • the remaining coils of the strand U are constructed identically, are located only in other grooves of the stator 2.
  • Winding schemes of strands V, W are shown in Figures 2b and 2c.
  • stator 1 the manufacturing method of the above-explained stator 1 will be described.
  • stator body 2 is inserted into a holder and stably held.
  • the corresponding coils which are to be fed into the stator body, provided.
  • the corresponding coils can be wound by a winding machine immediately before their insertion into the stator 2.
  • the coils are mounted on a carrier body.
  • the carrier body is then along the axis of rotation A introduced into the stator body 2, in such a way that the coils are retracted into the corresponding grooves.
  • Sub-layer of the two-layer winding form fed.
  • the coils U2, Ud2 of the strand U the coils Va2, Vc2 of the strand V, and the coils Wb2, Wd2 of the strand
  • the coils of the topsheet are begun to be drawn.
  • the coils Ub1, Ud1 of the strand U, the coils Va1, Vc2 of the strand V, and the coils Wb1, Wd1 of the strand W are jointly / simultaneously drawn.
  • the remaining coils of the top layer of the two-layer winding are pulled in.
  • the coils Ua1, Uc1 of the strand U the coils Wa1, Wc1 of the strand W, and the coils Vb1, Vd1 of the strand V
  • the coils Uc1, Uc2 shown in Figure 2a are connected to each other after the fourth indentation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Windings For Motors And Generators (AREA)

Abstract

La présente invention concerne un procédé de fabrication d'un stator destiné à une machine synchrone ou asynchrone, doté d'un enroulement à deux couches. Ledit procédé comprend les étapes consistant à : positionner un corps de stator définissant un axe de rotation s'étendant dans la direction longitudinale du corps de stator, pour un rotor à installer de manière appropriée dans le corps de stator, le corps de stator comprenant une pluralité d'encoches longitudinales ; préparer une pluralité de bobines à travers lesquelles circule un courant servant à générer un champ rotatif lors de l'utilisation normale du stator; et insérer les bobines dans les encoches de manière que les côtés d'au moins deux bobines s'étendent dans chacune des encoches et forment l'enroulement à deux couches, les côtés de bobines situés radialement à l'extérieur de l'axe de rotation formant une couche inférieure de l'enroulement à deux couches, et les côtés de bobines situées radialement à l'intérieur de l'axe de rotation formant une couche supérieure de l'enroulement à deux couches. Les bobines sont insérées dans les encoches de manière que les côtés de chacune des bobines forment exclusivement soit la couche inférieure, soit la couche supérieure.
EP17715942.3A 2016-04-21 2017-04-07 Procédé de fabrication d'un stator pour une machine synchrone ou asynchrone Withdrawn EP3446397A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016206752.4A DE102016206752A1 (de) 2016-04-21 2016-04-21 Herstellungsverfahren zur Herstellung eines Stators für eine Synchron- oder Asynchronmaschine
PCT/EP2017/058331 WO2017182291A1 (fr) 2016-04-21 2017-04-07 Procédé de fabrication d'un stator pour une machine synchrone ou asynchrone

Publications (1)

Publication Number Publication Date
EP3446397A1 true EP3446397A1 (fr) 2019-02-27

Family

ID=58489693

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17715942.3A Withdrawn EP3446397A1 (fr) 2016-04-21 2017-04-07 Procédé de fabrication d'un stator pour une machine synchrone ou asynchrone

Country Status (5)

Country Link
US (1) US20190052141A1 (fr)
EP (1) EP3446397A1 (fr)
CN (1) CN108702049A (fr)
DE (1) DE102016206752A1 (fr)
WO (1) WO2017182291A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112640262A (zh) * 2018-09-05 2021-04-09 米巴电动汽车有限公司 用于电机的定子

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2048063C2 (de) * 1970-09-30 1974-03-14 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Ständerwicklung für in axialer Richtung hintereinander angeordnete Motoren
DE2741403C2 (de) * 1977-09-14 1983-04-07 Siemens AG, 1000 Berlin und 8000 München Zweischichtwicklung mit ungerader Leiterzahl je Nut
DE9212889U1 (de) * 1992-09-24 1994-01-27 Siemens Ag Wicklungsanordnung für eine mehrphasige elektrische Maschine
US5898251A (en) * 1995-08-18 1999-04-27 Kabushiki Kaisha Toshiba Method of making armature winding of double-layer concentric-wound or lap-winding type for dynamoelectric machine
JPH09219948A (ja) * 1996-02-14 1997-08-19 Meidensha Corp 電動機の巻線方法
DE19846923C1 (de) * 1998-10-12 2000-11-16 Sachsenwerk Gmbh Mehrphasige Wicklung einer elektrischen Maschine und Verfahren zu ihrer Herstellung
DE10260311A1 (de) * 2002-12-20 2004-07-15 Siemens Ag Mehrfachspulen und Träufelwicklungen aus Litze sowie entsprechendes Herstellungsverfahren

Also Published As

Publication number Publication date
DE102016206752A1 (de) 2017-10-26
CN108702049A (zh) 2018-10-23
US20190052141A1 (en) 2019-02-14
WO2017182291A1 (fr) 2017-10-26

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