EP4298716A1 - Stator, moteur électrique et procédé de production d'un stator - Google Patents

Stator, moteur électrique et procédé de production d'un stator

Info

Publication number
EP4298716A1
EP4298716A1 EP21708644.6A EP21708644A EP4298716A1 EP 4298716 A1 EP4298716 A1 EP 4298716A1 EP 21708644 A EP21708644 A EP 21708644A EP 4298716 A1 EP4298716 A1 EP 4298716A1
Authority
EP
European Patent Office
Prior art keywords
winding
conductor
stator
arrangements
arrangement
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.)
Pending
Application number
EP21708644.6A
Other languages
German (de)
English (en)
Inventor
Martin Nowak
Georg VON PFINGSTEN
Dirk Hunkel
Tobias Winkler
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.)
Pierburg GmbH
Original Assignee
Pierburg GmbH
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 Pierburg GmbH filed Critical Pierburg GmbH
Publication of EP4298716A1 publication Critical patent/EP4298716A1/fr
Pending 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
    • H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in 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
    • H02K15/04—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
    • H02K15/0435—Wound windings
    • H02K15/0478—Wave windings, undulated windings

Definitions

  • stators with a "distributed winding” is the universal applicability of these stators. They can be used in permanently excited motors, asynchronous machines or externally excited synchronous machines.
  • Hairpin winding in which preformed wire elements with a large, usually rectangular wire cross-section are inserted axially into the stator slots from one end of the laminated core and twisted at the wire ends on the opposite side and connected to form a wave winding, the pull-in winding in particular has proven to be a form of distributed winding emerged.
  • An example of such a distributed winding is shown in German published application DE 10 2012 209 441 A1. the respective
  • each winding arrangement has opposite partial winding overhangs.
  • the conductor arrangements have to be arranged one after the other, as seen in the direction of the axis of rotation of the core organ, which means that a high proportion of them can be used non-electrically
  • a conductor arrangement is formed by a number of individual conductor elements. In this case, several small individual conductor elements, which are connected in parallel, form the conductor arrangement. In this way, a large cross-section of the conductor arrangement can be achieved in the stator slot, although only small electrical losses are recorded.
  • the individual conductor elements can have a common sheathing, at least in sections. This sheathing simplifies the winding process and is suitable for ensuring electrical insulation.
  • the conductor arrangement is twisted in the area of a partial winding overhang. Such twisting can take place once, for example by 180°, or several times. The twisting of the conductor arrangement in the respective partial winding overhang does not reduce the effective cross section of the conductor arrangement in the stator slot, but the current displacement is reduced at the same time. This allows particularly cost-effective
  • the conductor arrangement is bent twice in an S-shape in the winding direction at half of a partial winding head, in such a way that line arrangements, seen in the radial direction of the core element, run in one plane.
  • an angle of approximately 20°-45° can be provided.
  • the object is also achieved by an electric motor according to the invention with such a stator.
  • the conductor arrangements can be produced from a number of individual conductor elements and then at least partially provided with a sheath. It can be noted here that the layers are advantageously wound from the outside to the inside.
  • the conductor arrangements are twisted in the area of the partial winding overhangs during the winding process.
  • the conductor arrangements can also be bent inwards in an S-shape in the winding direction in the region of half of a partial winding overhang.
  • FIG. 1 is a perspective, partially sectioned view of a stator according to the invention
  • FIG. 2 shows a perspective view of winding arrangements with conductor arrangements after the winding of a first layer
  • FIG. 3 a development of a winding arrangement, consisting of two conductor arrangements
  • Figure 4 is a perspective view of a conductor assembly
  • FIG. 5 shows a perspective view of a conductor arrangement in the area of a partial winding overhang.
  • FIG. 1 shows a perspective, partially sectioned view of an electric machine 2, in particular an electric motor with a stator 4 according to the invention and a rotor 6 arranged in the stator 4.
  • the rotor 6 has permanent magnets 8 in a known manner.
  • the stator 4 according to the invention has a core element 10 with stator slots 12. Three winding arrangements 14, 16, 18 are provided in the stator slots 12, each of which forms a phase and is wound in seven layers as a distributed winding in the core element 10. It is therefore a three-phase electric motor 2, which of course has other parts, such as bearing means, shaft, etc., which are not shown.
  • winding assemblies 14, 16, 18 have in the present
  • Embodiment two parallel conductor assemblies 20, 22; 24, 26 and 28, 30 respectively. Electrically, the conductor arrangements can be connected both in parallel and in series.
  • stator ends 32, 34 are in a known manner
  • FIG. 2 shows a perspective view of the winding arrangements 14, 16, 18 from FIG. 1 in a first position without the core element 10.
  • Conductor assemblies 28, 30 the winding assembly 18.
  • the winding process is started for the line assemblies 20, 22 at position 46 for the conductor assemblies 24, 26 at position 48 and for the conductor assemblies 28, 30 at position 50 and proceeds counterclockwise.
  • the complete first layer of the three winding arrangements 14, 16, 18 is wound. This starts in the outwardly directed area of the stator slots 12.
  • FIG. 3 now shows a schematic development of the winding arrangement 16 consisting of the line arrangements 24, 26.
  • the jump width changes from 5 to 7 and vice versa.
  • FIG. 4 now shows part of the conductor arrangement 24 which, like all other conductor arrangements 20, 22, 26, 28 and 30, is made up of fifteen individual conductor elements 46 connected in parallel.
  • a sectional sheathing 48 is provided in the present exemplary embodiment.
  • Figure 5 shows a partial view of the line arrangement 24 in the area of the corresponding partial winding overhang 42. It can be clearly seen how the line arrangement 24 is twisted in the area of the partial winding overhang 42 and the conductor arrangement 24 is S-shaped, i.e. here twice by about 20° - is bent 45° in the winding direction.
  • a method for producing such a stator 4 will now be described, in particular with reference to FIGS. First the Conductor arrangements 20, 22, 24, 26, 28, 30 each made of fifteen parallel-connected individual conductor elements. Then the conductor arrangements 20, 22, 24, 26, 28, 30 are each provided with a sheath 48 and subsequently all the conductor arrangements 20, 22, 24, 26, 28, 30 are inserted into adjacent stator slots 12.
  • a winding arrangement 14, 16, 18 has two conductor arrangements.
  • winding arrangements 14, 16, 18 which each form the three phases U, V, W.
  • the conductor arrangements 20, 22, 24, 26, 28, 30 are twisted in the area of the partial winding heads 40, 42, 44.
  • the conductor arrangement 20, 22, 24, 26, 28, 30 in the region of half of a partial winding overhang 40, 42, 44 are bent inward twice in the winding direction by 20°-45°.

Landscapes

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

Abstract

L'invention concerne un stator (4) pour une machine électrique polyphasée (2), comprenant un élément de noyau (10) qui comprend des fentes de stator (12) destinées à recevoir au moins deux agencements d'enroulement (14, 16, 18) qui comprennent chacun au moins deux arrangements de conducteurs (20, 22 ; 24, 26 ; 28, 30) qui s'étendent en parallèle et forment chacun une phase de manière à obtenir ce qui est connu sous la forme d'un enroulement réparti, chaque arrangement de conducteurs (20, 22 ; 24, 26 ; 28, 30) d'un agencement d'enroulement (14, 16, 18) comprend au moins deux sauts successifs dans la direction circonférentielle, la largeur de saut respective SLW de l'arrangement de conducteurs (20, 22 ; 24, 26 ; 28, 30) respectif au niveau de chaque enroulement d'extrémité partiel (40, 42, 44) étant nouvellement défini avec n = 1 selon la formule SLW = (m-1)q + 1 + 2(n-1) en commençant par l'arrangement de conducteurs (20, 22 ; 24, 26 ; 28, 30) respectivement interne, où m désigne le nombre de phases et où q désigne le nombre d'arrangements de conducteurs (20, 22 ; 24, 26 ; 28, 30) associés à un arrangement d'enroulement (14, 16, 18) et n est en alternance égal à 1 ou à q, comme vu dans la direction circonférentielle. L'invention concerne également un moteur électrique (2) et un procédé de production d'un stator (4).
EP21708644.6A 2021-02-26 2021-02-26 Stator, moteur électrique et procédé de production d'un stator Pending EP4298716A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2021/054897 WO2022179706A1 (fr) 2021-02-26 2021-02-26 Stator, moteur électrique et procédé de production d'un stator

Publications (1)

Publication Number Publication Date
EP4298716A1 true EP4298716A1 (fr) 2024-01-03

Family

ID=74797950

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21708644.6A Pending EP4298716A1 (fr) 2021-02-26 2021-02-26 Stator, moteur électrique et procédé de production d'un stator

Country Status (2)

Country Link
EP (1) EP4298716A1 (fr)
WO (1) WO2022179706A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7005772B1 (en) * 2005-04-06 2006-02-28 Visteon Global Technologies, Inc. Stator winding having two slots per phase per pole
JP2010068590A (ja) * 2008-09-09 2010-03-25 Aisin Aw Co Ltd ステータ
US20110260572A1 (en) * 2010-04-27 2011-10-27 Honda Motor Co., Ltd. Motor stator and manufacturing method of motor stator
DE102012209441A1 (de) 2012-06-05 2013-12-05 Siemens Aktiengesellschaft Elektrische Maschine mit asymmetrisch angeordneten Wicklungsköpfen
JP6394971B2 (ja) * 2015-02-19 2018-09-26 株式会社デンソー 回転電機の固定子
EP3759795B1 (fr) * 2018-02-28 2023-08-23 Grob-Werke GmbH & Co. KG Tapis d'enroulement et tapis à bobines comprenant celui-ci ainsi qu'un composant d'une machine électrique ainsi formé et son procédé de fabrication

Also Published As

Publication number Publication date
WO2022179706A1 (fr) 2022-09-01

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