WO2019215097A1 - Procédé de fabrication d'un enroulement pour un stator d'une machine électrique et machine électrique - Google Patents

Procédé de fabrication d'un enroulement pour un stator d'une machine électrique et machine électrique Download PDF

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Publication number
WO2019215097A1
WO2019215097A1 PCT/EP2019/061579 EP2019061579W WO2019215097A1 WO 2019215097 A1 WO2019215097 A1 WO 2019215097A1 EP 2019061579 W EP2019061579 W EP 2019061579W WO 2019215097 A1 WO2019215097 A1 WO 2019215097A1
Authority
WO
WIPO (PCT)
Prior art keywords
winding
stator
layers
elements
layer
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.)
Ceased
Application number
PCT/EP2019/061579
Other languages
German (de)
English (en)
Inventor
Klaus Herbold
Helmut Kreuzer
Christoph Schwarzkopf
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.)
SEG Automotive Germany GmbH
Original Assignee
SEG Automotive Germany 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 SEG Automotive Germany GmbH filed Critical SEG Automotive Germany GmbH
Publication of WO2019215097A1 publication Critical patent/WO2019215097A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/04—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines
    • H02K15/0414—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines the windings consisting of separate elements, e.g. bars, segments or half coils
    • H02K15/0421—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines the windings consisting of separate elements, e.g. bars, segments or half coils and consisting of single conductors, e.g. hairpins
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/06—Embedding prefabricated windings in the machines
    • H02K15/062—Windings in slots; Salient pole windings
    • H02K15/064—Windings consisting of separate segments
    • 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

Definitions

  • the present invention relates to a method for producing a winding for a stator of an electric machine according to a Steckwicklungsverfah ren (or so-called. Hairpin method) with wave windings and an electric machine with such Wcklung.
  • the invention is based on a plug-in winding method, as explained above, and a method for producing a winding for a stator of an electric machine according to a plug-in winding method, with wave windings in which winding elements are introduced into slots of the stator.
  • the winding elements can be U-shaped, in particular hairpin-shaped.
  • individual winding elements can also be designed differently.
  • the electrical machine is preferably a generator. gate, in particular a claw pole generator. Further fields of use are also electric synchronous motors, for example as an additional drive motor in a motor vehicle.
  • the winding elements are arranged in one or more layers extending in the circumferential direction of the stator.
  • be arranged in the one or one of the several layers in the grooves to be arranged straight sections each have a winding element in egg ner position with the same radial distance to a rotational axis of the stator.
  • the straight sections are arranged in the slots to be arranged in a position with the same radial distance to a rotational axis of the stator, in that the straight sections are initially arranged in two layers with a different radial distance to the rotational axis. Are arranged axis of the stand and then spent in one position.
  • the manufacturing process can therefore initially be started as for a winding with the winding elements in two layers with different radial distance from the axis of rotation of the stator, but are supplemented by one or possibly more intermediate steps, so the number of layers for the straight sections of the winding elements from reducing two layers to one layer.
  • the winding elements are arranged in a plurality, extending in the circumferential direction of the stator Rich layers, wherein in at least egg ner, preferably all, the remaining layers, the straight sections are arranged in two layers with different radial distance from the axis of rotation of Stän DERS, wherein in each groove two straight sections of ver different winding elements are arranged.
  • the remaining shale th are those of the multiple layers to understand in which the straight sections are not angeord net in a position with the same radial distance.
  • a conventional arrangement of Wick are elements in layers with two layers and an array of Wick tion elements in a layer combined with only one layer.
  • any odd number of straight portions of winding elements (or conductors) in the slots can be obtained.
  • a manufacturing device as needed for the production of a winding with an even or odd number of straight sections of Wick tion elements (or conductors) can be used in the grooves.
  • the layer in which the straight portions of each winding element are arranged in a position with the same radial distance to a rotation axis of the stator is arranged as the radially innermost or radially outer layer in the stator.
  • the winding elements of the layer in which the Wick tion elements are arranged in a position with the same radial distance to the rotation axis of the stator are then for this phase with a winding direction in or a winding direction against the circumferential direction of the stator (ie either in the forward direction or in the reverse direction). This can be done a simple and fast arrangement and subsequent circuit or connection Ver the winding elements.
  • winding elements are used with round wire cross-section ver, wherein the cross-sections are formed at least in the region to be arranged in the grooves straight portions of the winding elements in an angular, in particular rectangular, square or trapezoidal, cross-section to.
  • Round wire cross-sections - as material comes here insbesonde re, as already mentioned, copper or copper wire in question - initially allow easy production of the winding elements.
  • the filling factor in the grooves can be increased significantly.
  • the winding elements are connected for several phases of the winding, in particular for three, five, six or nine phases.
  • each groove of the stator in each case three, five, seven or nine straight sections of the winding elements are arranged.
  • the advantages of the proposed method are particularly clear, especially in such, rather small numbers of straight sections or conductors in the grooves, by the possibility of odd numbers a particularly good Passing or vote to necessary services of the electrical machine is possible, please include.
  • the winding that is to say the winding elements or at least a plurality of the winding elements, is or are arranged such that they come to lie or lie in a radial cooling air flow of the electrical machine.
  • the invention furthermore relates to an electric machine having a stator and a winding in the form of a plug-in winding with wave windings, in which winding elements, preferably U-shaped winding elements, are introduced into slots of the stator.
  • the electric machine is preferably a generator, in particular a claw-pole generator.
  • the winding elements are arranged in one or more, extending in the circumferential direction of the stator Rich layers, and in the one or more layers to be arranged in the grooves straight sections depending Weil a Wcklungselements are in a position with the same radial distance to a rotation axis of the Stand arranged.
  • the electric machine is manufactured according to a process according to the invention inventively, i. in particular it has the properties described above, as they result from the mentioned method.
  • FIG. 1 shows schematically an electrical machine according to the invention in a preferred embodiment.
  • Figures 2 to 7 show sections of a stator of an electric machine according to the invention in a preferred embodiment.
  • Figure 8 shows a section of a stator of an inventive electrical cal machine in a further preferred embodiment.
  • FIG. 1 shows a schematic and simplified electrical machine 100 in longitudinal section, which is used as an AC synchronous generator with a claw pole rotor (or claw pole generator) with regulated electrical excitation of the pole wheel for use in motor vehicles is trained.
  • the electric machine 100 has a multi-part housing, in particular a metal housing, consisting of a respective bearing plate 110 and 120 at both end faces.
  • the end shields 110 and 120 are cup-shaped, in particular with end and peripheral recesses for a cooling air duct.
  • a stator 130 is fastened, which in the embodiment shown is formed out of a disk set and a polyphase winding or stator winding 140 arranged therein.
  • the disk pack can be made in a conventional manner from a plurality of laminations.
  • the stator winding 140 is divided into winding strands, which are housed in axially and mutually parallel, radially inwardly open grooves.
  • a claw poltater 150 is arranged and rotatably mounted in the bearing plates 110 and 120 about a Rotati onsachse R.
  • a rotor shaft 155 carries two oppositely poled Polradhiern.
  • Each pole wheel half is preferably made of iron, is formed mas siv and has along the circumference of a plurality of axially extending claws, which are shaped substantially trapezoidal and arranged with uniform angular pitch in the circumferential direction.
  • Both PolradhCAn are arranged on the rotor shaft 155 such that they face each other and their claw-like Polfinger mutually engage as south and north poles. They cover an annular excitation winding 160, which is located on a pole core 165, which keeps the two PolradhCAn at a distance.
  • a slip ring pair 170 is arranged, which serves the power supply of the exciting coil 160 He.
  • a DC current of the excitation winding 160 generates a resting with respect to the rotor axial magnetic field, which is deflected by the Klauenpo le in a radial direction.
  • the rotation of the rotor ent is for the stator 130, a magnetic rotating field.
  • This rotary field rotates with synchronous speed to the pole wheel and induces an AC voltage in each of the string or each phase of the stator winding 140.
  • the individual strand alternating voltages are shifted by an angle (Phasenver shift angle) in time against each other. For example, for a symmetrical three-phase winding, the three sinusoidal alternating voltages are shifted by 120 ° with respect to each other. The same applies to the alternating currents.
  • Carbon brushes which are pressed against surfaces of the slip rings 170 are mounted in a brush holder 175, which together with a regulator 180, which can regulate the induced voltages in the windings to a speed and load independent, constant voltage, a unit here ,
  • the output from the stator winding 140 alternating current can be supplied via a rectifier circuit to a vehicle electrical system of a motor vehicle, the rectifier assembly 190, for example, outside the rear bearing plate 120 is arranged.
  • the rectifier arrangement 190 and the controller 180 are covered by a protective cap 185 on the rear end side of the electric machine 100 Ma.
  • FIGS. 2 to 7. A method according to the invention in a preferred embodiment or an electrical machine according to the invention in a preferred embodiment, of which in particular the winding, will be explained below with reference to FIGS. 2 to 7.
  • a stator with 80 slots is used and the winding is divided into five phases, with five conductors or straight sections of the winding elements being arranged in each slot.
  • FIG. 2 shows a side view of the stand 130.
  • connection elements 230 for connecting the phase or the winding to, for example, a rectifier can also be seen.
  • connection elements are formed here by extended conductor ends of two possibly special winding elements.
  • FIG. 2b shows a sectional view of FIG. 2a.
  • FIG. 2c shows a top view of the stator 130 from a plug-in side S1.
  • plug-in side is understood to mean that from or on this side, the individual winding elements 200 in the grooves, one of which is here denoted by 131, are inserted. This corresponds to the upper side in FIG. 2a.
  • the rotation axis R can be seen.
  • FIG. 2d shows a top view of the stator 130 from a switching side S2.
  • switching side is to be understood that on this page, the ends or conductor ends of the individual winding elements, which protrude from the grooves, in each case connected in pairs, in particular welded. This corresponds to the lower side in FIG. 2a.
  • One of these ends is labeled 210. These conductor ends can be stripped before introducing the first fully iso lated Wcklungsiana so that they can be welded. After welding, the corresponding pairs of conductors can then be isolated again.
  • Figure 3 the views of Figures 2c and 2d are shown in greater detail.
  • zei gene 3a the plug side S1 and 3b, the switching side S2.
  • FIG. 5 shows perspective views of the winding, as shown in FIG.
  • Figure 5a shows the plug side S1
  • Figure 5b shows the switching page S2.
  • FIG. 6a shows a plan view of the switching side S2
  • FIG. 6b shows a side view, with the plug side S1 at the top and the switching side S2 at the bottom
  • FIG. 6c a plan view of the plug side S1
  • FIG. 6d a sectional view in the slot region, i. through the straight from sections 240 of the winding elements.
  • the five individual layers can be seen in particular.
  • the individual layers are labeled from top to bottom with L1 to L5.
  • the top two layers L1 and L2 form the radially outermost layer
  • the two layers L3 and L4 form the middle layer
  • the bottom layer L5 bil the radially innermost layer.
  • the winding elements in particular with respect to the straight-line winding sections, are designed such that both straight portions of a Wick lungselements can be arranged in one or the same position.
  • FIG. 7 the winding or phase shown in FIG. 6 is shown even further deviated, namely, according to individual winding elements with associated juxtaposition and winding direction.
  • connection element 230 which is part of a (half or specially trained) winding element, followed by seven identical winding elements, also referred to as series elements. This represents a forward winding direction.
  • the third and fourth row from above corresponding to the first and second Rei hey, with the exception that the third row, starting right, with a so-called.
  • Intermediary connector as a winding element, not with a Anschlus selement.
  • the third and fourth row from above form the radially middle layer of the winding elements.
  • the bottom row begins, from the right, again with an intermediate connector, followed by seven series elements and a connection element 230 at the very end.
  • This bottom row forms its own, namely the radially innermost layer.
  • the reversing or intermediate connectors differ from the series elements as winding elements only insofar as that one of the leaders is bent in a different direction. This can be done for example by means of a suitable tool.
  • FIG. 8 shows a detail of a stator of an electric machine according to the invention in a further preferred embodiment, where in particular here too only the stator 130 with the winding is shown.
  • the views shown here in Figures 8a and 8b are similar to the views of Figure 3 ( Figures 3a and 3b).
  • the layer in which the straight portions of the coil members are disposed in the same layer is the radially outermost layer.

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

Abstract

La présente invention concerne un procédé de fabrication d'un enroulement pour un stator (130) d'une machine électrique selon un procédé d'enroulement par piquage avec des enroulements ondulants selon lequel des éléments d'enroulement (200) sont introduits dans des nervures (131) du stator, les éléments d'enroulement (200) étant disposés dans une ou plusieurs couches (221, 222, 223) s'étendant dans la direction circonférentielle du stator (130) et, dans la couche ou dans une (223) des plusieurs couches, des secteurs droits, à disposer dans les nervures (131), de chaque élément d'enroulement (200) sont disposés dans une position ayant la même distance radiale par rapport à un axe de rotation du stator. La présente invention concerne en outre une machine électrique de ce genre.
PCT/EP2019/061579 2018-05-09 2019-05-06 Procédé de fabrication d'un enroulement pour un stator d'une machine électrique et machine électrique Ceased WO2019215097A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018111119.3A DE102018111119A1 (de) 2018-05-09 2018-05-09 Verfahren zum Herstellen einer Wicklung für einen Ständer einer elektrischen Maschine und elektrische Maschine
DE102018111119.3 2018-05-09

Publications (1)

Publication Number Publication Date
WO2019215097A1 true WO2019215097A1 (fr) 2019-11-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/061579 Ceased WO2019215097A1 (fr) 2018-05-09 2019-05-06 Procédé de fabrication d'un enroulement pour un stator d'une machine électrique et machine électrique

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DE (1) DE102018111119A1 (fr)
WO (1) WO2019215097A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023124509A1 (fr) * 2021-12-31 2023-07-06 华为数字能源技术有限公司 Stator, moteur électrique à fil plat, ensemble d'alimentation et véhicule

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019131036A1 (de) * 2019-11-18 2021-05-20 Schaeffler Technologies AG & Co. KG Stator für eine elektrische Maschine
DE102019218607A1 (de) * 2019-11-29 2021-06-02 Robert Bosch Gmbh Maschinenkomponente für eine elektrische Maschine
DE102023133071A1 (de) * 2023-11-27 2025-05-28 Seg Automotive Germany Gmbh Verfahren zum Herstellen einer Ständerwicklung für einen Ständer einer elektrischen Maschine und elektrische Maschine
DE102024203415A1 (de) * 2024-04-12 2025-10-16 Schaeffler Technologies AG & Co. KG Stator für eine elektrische Maschine eines Traktionsantriebs eines Kraftfahrzeugs

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020079771A1 (en) * 2000-02-10 2002-06-27 Ryoichi Taji A.C. generator for vehicle
US20060032040A1 (en) * 2004-08-10 2006-02-16 Neet Kirk E Method of making cascaded multilayer stator winding with interleaved transitions
US7126245B2 (en) * 2004-03-31 2006-10-24 Valeo Equipements Electriques Moteur Polyphase armature for a rotary electrical machine, and its method of manufacture
DE102007005742A1 (de) * 2007-01-29 2008-07-31 Robert Bosch Gmbh Mehrphasige elektrische Maschine
DE102017208706A1 (de) * 2016-09-27 2018-03-29 Robert Bosch Gmbh Stator für eine elektrische Maschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020079771A1 (en) * 2000-02-10 2002-06-27 Ryoichi Taji A.C. generator for vehicle
US7126245B2 (en) * 2004-03-31 2006-10-24 Valeo Equipements Electriques Moteur Polyphase armature for a rotary electrical machine, and its method of manufacture
US20060032040A1 (en) * 2004-08-10 2006-02-16 Neet Kirk E Method of making cascaded multilayer stator winding with interleaved transitions
DE102007005742A1 (de) * 2007-01-29 2008-07-31 Robert Bosch Gmbh Mehrphasige elektrische Maschine
DE102017208706A1 (de) * 2016-09-27 2018-03-29 Robert Bosch Gmbh Stator für eine elektrische Maschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023124509A1 (fr) * 2021-12-31 2023-07-06 华为数字能源技术有限公司 Stator, moteur électrique à fil plat, ensemble d'alimentation et véhicule

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