WO2009083143A1 - Support d'enroulement pour une machine électrique - Google Patents

Support d'enroulement pour une machine électrique Download PDF

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Publication number
WO2009083143A1
WO2009083143A1 PCT/EP2008/010729 EP2008010729W WO2009083143A1 WO 2009083143 A1 WO2009083143 A1 WO 2009083143A1 EP 2008010729 W EP2008010729 W EP 2008010729W WO 2009083143 A1 WO2009083143 A1 WO 2009083143A1
Authority
WO
WIPO (PCT)
Prior art keywords
winding
insulation
extension
primary part
primary
Prior art date
Application number
PCT/EP2008/010729
Other languages
German (de)
English (en)
Inventor
Helmut Kunkel
Arno Hack
Detlef Witt
Rudolf Bodner
Original Assignee
Robert Bosch 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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2009083143A1 publication Critical patent/WO2009083143A1/fr

Links

Classifications

    • 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
    • H02K3/325—Windings characterised by the shape, form or construction of the insulation for windings on salient poles, such as claw-shaped poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles

Definitions

  • the present invention relates to a winding support for attachment to the primary part segments of an electrical machine according to independent claim 1 and to a method for producing a winding support according to the invention according to claim 17.
  • a primary part of an electrical machine can be realized by means of a plurality of individual primary part segments.
  • These primary part segments generally comprise a yoke section, which is intended to guide the magnetic field generated during operation of the machine, and a so-called tooth section, on which windings can be arranged.
  • the aforementioned primary subsegments are generally used in conjunction with so-called concentrated windings. In this method, a winding is not distributed over several teeth, but it is limited to a single tooth. Accordingly, primary sub-segments can be manufactured together with the concentrated winding as a separate module.
  • Bobbins There is shown an insulating bobbin mounted on a tooth extending from a ring segment yoke of a stator with a wire wrapped around the insulating bobbin.
  • a single stator segment is shown in detail.
  • This segment also consists of a yoke and a tooth and a tooth extension section opposite the yoke.
  • the yoke, the tooth extension portion and the tooth portion itself form an H-shaped cross section, wherein a space for accommodating a winding by means of the cross section is realized longitudinally in the axial direction of the stator.
  • the winding is isolated by means of an insulating body of the material of the stator segment.
  • Attachment sections are shown on the end faces of the yoke, by means of which a form-fitting joining together of a plurality of adjacent stator segments is possible, so that the arrangement is fixed in the radial direction.
  • tooth extension sections do not abut each other directly in order to avoid a magnetic short circuit in the immediate vicinity of the rotor.
  • the invention achieves this object by means of a winding carrier for mounting on the primary part segments of a primary part of an electric machine with additional modular secondary part, in particular a linear motor or a rotationally symmetrical motor, wherein a primary part segment comprises at least one yoke portion and a tooth portion for attaching a winding, wherein the winding support comprises a preferably injection-molded realized insulating means to at least partially enclose the tooth portion of the primary part segment, wherein at least a first Isolationsstofferweit ceremoniessabêt is provided on the insulating means to at least partially enclose the yoke portion of the primary part segment.
  • the stationary component of the electric machine Under primary part is understood in this context, the stationary component of the electric machine.
  • stator of a rotationally symmetrical machine.
  • movable component of the electric machine It may be, for example, the rotor of a rotationally symmetrical machine.
  • rotor of a rotationally symmetrical machine.
  • Abutment can be arranged to be movable.
  • the term primary part does not necessarily also assume the stationary component of an electrical machine, even if the primary part is frequently realized as a stationary component due to the required cable and control supply lines.
  • the term secondary part is not necessarily assumed to be a movable component of an electric machine, even if the secondary part is often arranged to be movable.
  • the machine component comprising the winding body according to the invention can therefore represent both a stationary and a non-stationary machine component.
  • An advantage of the invention is the improved reliability of the insulation between the winding and the primary part segment due to a stable and more compact winding carrier, which requires no complex assembly work and accordingly has a low probability of failure in the subsequent operation of the machine.
  • an insulation extension from the winding support is additionally included in order to electrically isolate a winding which can be arranged on the insulation means with respect to the windings of adjacent primary part segments, wherein the insulation extension is arranged or can be arranged on the insulation material extension section.
  • This aspect of the invention avoids this disadvantage, since the insulating means in the form of the insulation extension is already provided on the winding support in order to realize the protection of the mutually adjacent windings. Thus, the assembly process and the reliability of the assembly during operation are simplified and the life of the assembly increases.
  • the insulation extension is arranged so hingedly on the insulating means that the insulating means and the insulation extension form a one-piece body. This prevents the introduction of the insulation during the assembly of a primary part could be overlooked by the fitter because it is already fixedly disposed on the winding support and pre-fixed. After the wrapping of the support, the insulation extension must be folded over only by means of the joint, so that it covers the winding in the peripheral side or in the direction of movement of the secondary part. In addition to the hinge snap closures or positive connections could be provided to lock the insulation extension on the side opposite the hinge side of the winding support.
  • a second insulation means extension section is provided on the winding support, which can extend at least partially over the end faces of a tooth section with secondary part side tooth extension section.
  • This extension section can serve to isolate the end faces of the tooth extension section with respect to adjacent tooth extension sections. On the other hand, it can serve to receive a guide or a joint for fastening the insulation extension.
  • a winding carrier according to the invention, wherein connecting sections are included and wherein opposite connecting sections are formed corresponding to each other, so that directly adjacent to each other winding carriers are positively connected to each other.
  • the connecting portions By means of the connecting portions, the primary part segments can be fixed against each other both on the yoke side and on the secondary part side. Secondary part side, a magnetic short circuit due to this fixation is bypassed by the fact that the magnetically conductive material is not directly connected.
  • the connection is made indirectly using the winding carrier material, which isolates the magnetically conductive material of the juxtaposed primary sub-segments against each other both electrically and magnetically. This compound also contributes to the locking of the overall arrangement in the radial direction or in a linear motor perpendicular to the direction of motion.
  • connection sections are preferably arranged on the end side of the first insulation extension section facing an adjacent primary section segment such that, in the case of adjoining insulation extension sections of immediately adjacent primary section segments, an air gap extended along the end faces in comparison to planar end surfaces.
  • This causes, in the case of adjoining expansion sections of adjacent stator segments, the extension section end faces no longer abutting one another, resulting in an undesired, relatively short air gap between yoke underside and winding.
  • the invention causes due to the mutually corresponding connection means, such as tongue and groove joints or sliding and plug connections or snap connections that an extended air gap is formed, which increases the dielectric strength of the arrangement along the air gap. At the same time this interlocking causes a higher stability of the arrangement.
  • This aspect of the invention also applies to winding carriers with and without insulation extension according to the invention.
  • the isolation means forms together with the first
  • Isolationsstofferweit ceremoniessab a T-shaped cross-sectional profile and together with the first and the second insulation means extension portion of an H-shaped cross-sectional profile, wherein the winding support comprises support extensions for supporting the head of an insulating means can be arranged with at least a first first opening for wire feedthrough.
  • the profile stabilizes the winding carrier and the wire feedthrough facilitates wrapping.
  • a boundary of the recess is preferably aligned with a surface of the insulating means arranged on the tooth portion and the recess has in particular a cross section which allows insertion of a wire from a direction deviating from the vertical direction relative to the support surface.
  • the leads are thus not excessively strained by bending or stretching and can be easily interconnected together with the leads of other windings.
  • the advantage of this solution also lies in the fact that the first wire layers on the insulating means are executable such that wire by wire comes to lie evenly next to one another, so that in combination with further winding layers a maximum possible filling factor can be achieved.
  • the first wire layer is not designed as described above, for example if individual wires overlap, this has negative effects on all following winding layers and air pockets and voids are formed, which can lead to a reduced copper lead factor and thus to a reduced force density.
  • the recess designed according to the invention avoids this by virtue of the fact that, when the first winding layer is realized, the wire is guided in a straight line between a boundary of the first winding layer
  • At least one recess is provided on the winding support for arranging a fastening means for a winding which can be arranged on the winding body.
  • Recess is realized in such a way that it has no influence on the copper sensing factor. This is effected by the fact that the recess ultimately represents a depression on the surface of the insulating means over which the wire can be passed.
  • the winding can thus be knotted, for example by means of a cord, to lock the winding heads.
  • a primary part segment for electrical machines in particular linear motors or rotationally symmetrical motors, equipped with yoke portion and tooth portion with a winding body according to one of the preceding claims, so that the winding body encloses both the tooth portion and the yoke portion at least partially positively.
  • Primary segment and winding support thus form a compact unit that can be installed or sold as such.
  • the effort for mounting the winding carrier on the primary section segment and for the insulation of the winding is reduced. This leads to a reduction of the manufacturing costs in the manufacture of the machine.
  • the winding body of the adjacent primary part segments engage each other due to the connecting portions according to the invention and thus increase the stability of the arrangement.
  • the connection sections provided on the extension sections increase the stability of the arrangement during operation and avoid the vibrations already described or the noise resulting from the vibrations.
  • the isolation means and the isolation means extension 'sabites the injection molding is produced in such a way.
  • the most varied forms are thus easily realizable.
  • the desired stability of the winding body can also be influenced by suitable configuration of the injection molding process.
  • the method is carried out in such a way that an insulation extension can be arranged, which is suitable for electrically isolating a toothed winding arranged on the insulating means or on the insulation-medium extension section with respect to the tooth windings of adjacent stator segments.
  • an insulation extension increases the reliability of the machine and avoids short circuits within the concentric windings.
  • the insulation extension is injection-molded in such a way within the previously mentioned injection molding directly on the insulating means or on the insulating agent extension section that insulation means or insulating agent extension section and insulation extension form a one-piece and hingedly interconnected unit.
  • the insulation extension thus forms together with the insulation means a non-separable unit and must be taken into account during installation inevitably.
  • a smooth film hinge can be realized.
  • the insulation extension is reliably and securely connected to the insulating means at least on one of its sides and thus only has to be locked on the side opposite the joint, for example by means of a snap connection or the like.
  • the insulating means directly on a primary sub-module, usually consisting of stamped or welded sheets or solid material, sprayed in the context of an injection molding, so that a non-releasable positive connection between the winding support and PrimärteilmoduLentent. This further reduces the assembly costs, since now the winding support no longer has to be manually applied to the primary part module.
  • FIG. 1 shows the view of the uncut cross section of a primary submodule provided with a winding carrier according to the invention.
  • FIG. 2 shows the longitudinal section through the primary submodule shown in FIG. 1 from the perspective of the secondary part.
  • FIG. 3 shows an alternative solution to the solution shown in FIG.
  • Such a primary sub-module is usually realized from each other punched or welded sheets. It is also possible to make such a primary sub-module from sintered material so that it consists of a solid block. All Primärteilmodulabitese are usually made of the same material and can form a one-piece or multi-part module.
  • the modules are multi-part when, for example, yoke section 1 and tooth section 2 are made by means of separate parts and are interconnected by means of positive connections.
  • the reference numeral 3 designates the insulating agent extension section for covering the yoke bottom side and the winding-facing upper side of the secondary-part-side tooth extension section 2a.
  • the secondary part of the underside facing the tooth extension portion 2a is not covered by the insulating means of the winding support.
  • this surface may be coated by means of an insulating layer, for example by means of a resin.
  • a. possibly existing insulation does not adversely affect the dimensioning of the air gap.
  • FIG. 1 likewise shows the insulation extension 5, which in this example is attached to the longitudinal end face of the insulation means extension section 3 in an articulated manner, for example by means of a film hinge.
  • this film hinge of the insulation extension 5 is movably mounted and can be changed by bending or fold over in its position that it is aligned substantially parallel to the surface of the insulating means 4, and thus at least partially cover a winding applied to Isolati ⁇ nsstoff.
  • this insulation extension is locked on the yoke-side insulation means extension section 3 by means of snap connections or other releasable connections (not shown here).
  • FIG. 1 shows the view side of the primary submodule with the winding carrier according to the invention, it can also be clearly seen here that at the longitudinal sides of the insulating means extension sections 3 facing the adjacent primary submodules
  • Connecting means 4A, 4B are present. These opposing connection means 4A, 4B are different, but corresponding to each other.
  • the connecting means 4A has a longitudinal projection, such as the spring of a tongue and groove joint, and the opposing connecting means 4B, the associated longitudinal groove.
  • the connecting means 4A has a longitudinal projection, such as the spring of a tongue and groove joint, and the opposing connecting means 4B, the associated longitudinal groove.
  • triangular NuW spring connections were chosen. If you now two known from Figure 1 primary sub-modules side by side, so engages the spring 4A of the first primary submodule in the groove 4B of the second primary sub-module and causes an air gap forms within the compound whose length considered in cross-section with respect to the length of plan adjacent end faces without tongue and groove connection, is increased.
  • the air gap extends in this example in cross section along the triangular tongue and groove connection.
  • This extended air gap can increase the dielectric strength of the insulation between the winding and the yoke material by 10 to 50% compared to flush-fitting end faces.
  • the air gap can thus be selectively extended or shortened.
  • a recess 9 is provided along the cross-sectional side height of the winding support, which represents a recess in the material thickness of the winding support. This recess 9 serves to receive a
  • Fastener such as a simple cord for fixing the winding head of a later applied winding.
  • the winding head rests on the extension 7 and is thus effectively protected against external effects.
  • connection means IA, IB which similar to the aforementioned connecting means 4A, 4B cooperate with corresponding connecting means of adjacent primary sub-modules and ensure mechanical strength of the arrangement. These end faces are not encompassed by an insulating means in order not to influence the magnetic conductivity of a primary part yoke 1 realized by means of the primary submodules.
  • the secondary-part-side insulating agent extension portion 3 is provided with connection means 4A, 4B. These Connection means may be identical or similar to the connection means 4A, 4B of the
  • FIG. 2 shows the longitudinal section through the primary part module already known from FIG. 1 from the perspective of the secondary part (see arrows in FIG. 1).
  • the actual core of the primary part module is clearly seen in section (secondary part side longitudinal section through the tooth portion 2 and insulation means 4).
  • the tooth portion 2 is surrounded on all sides by the insulating means 4, wherein in this example the material thickness of the insulating means is implemented on at least one side of the tooth portion .derart that the recess 9 for receiving a fastening for a winding to be introduced is feasible.
  • FIG. 8A Further recesses 8A, 8B are shown, which ultimately serve for wiring a winding introduced into the winding carrier.
  • the cross-section of this recess is, as shown in Figure 1, V-shaped in this example, so that a wire yoke side can be inserted from different directions in the winding carrier, without exposing this wire massive mechanical stresses, such as a bending stress. It would also be sufficient to bevel only one edge, so that the wire is insertable from one direction. In the V-shaped recess of the wire is off two directions insertable.
  • At least one edge of the V-shaped wire entry 8A is aligned with the edge of the insulating means 4 to which the wire is later applied.
  • a wire can thus be applied to the insulating means 4 in such a way that the largest possible possible contact between insulating means 4 and wire surface is formed.
  • the precision with which this first layer of the winding is carried out essentially determines the quality of the entire winding and is therefore significantly responsible for achieving an optimum copper fill factor.
  • the second recess 8B serves to guide the wire out of the winding carrier after application of the winding, so that the winding on the primary module with the windings of other primary module on the yoke side are easily interconnected by easy accessibility of the winding connection wires.
  • support extensions 7 are additionally arranged to protect the winding head. Secondary part side, the winding can at least partially rest on the secondary side insulation means extension section 3. ,
  • FIG. 3 is essentially identical to FIG. 1. Therefore, the same statements as in FIG. 1 apply. Only the intermediate insulation extension 5 has been arranged on the yoke side.
  • the primary sub-module shown in Figs. 1, 2 and 3 can be realized only by directly injecting the insulating means 4 and the insulating agent extension portions 3 onto the primary part-modulus raw material (stamped or (laser) welded laminated sheet or solid type).
  • the winding support is thus non-destructively non-detachably connected to the Primärteilmodulrohmaterial.
  • the injection process is carried out in such a way that either a film hinge is realized or that at least one articulated bearing 6 is realized between the insulation extension 5 and the insulation means extension section 3.
  • the insulation extension 5 can easily be folded over after application of the winding in the direction of the yoke-side insulation means extension section 3 by means of the joint 6 and optionally on the yoke side
  • Isolation medium extension section 3 by means of a corresponding form-fitting connection engage.

Abstract

L'invention vise à réaliser un support d'enroulement qui garantisse une isolation optimale et fiable d'enroulements de rotor les uns par rapport aux autres. Elle y parvient au moyen d'un support d'enroulement à installer sur les segments d'une partie primaire, réalisée à structure modulaire au moyen des segments de partie primaire, d'un moteur linéaire ou d'un moteur à symétrie de révolution, sachant : qu'un segment de partie primaire comprend au moins une partie culasse (1) et une partie dentée (2) pour l'installation d'un enroulement ; que le support d'enroulement comprend un moyen d'isolation (4), pour entourer au moins partiellement la partie dentée (2) du segment de partie primaire ; qu'au moins une première partie d'extension (3) de moyen d'isolation est prévue sur le moyen d'isolation, pour entourer au moins partiellement la partie culasse (1) du segment de partie primaire ; que le support d'enroulement comprend en outre un prolongement d'isolation (5), afin d'isoler électriquement un enroulement pouvant être disposé sur le moyen d'isolation (4) vis-à-vis des enroulements de segments de partie primaire voisins, sachant que le prolongement d'isolation (5) est ou peut être disposé sur la partie d'extension (3) de moyen d'isolation. L'avantage de la solution selon l'invention consiste en ce que le processus de fabrication de la partie primaire d'une machine électrique est simplifié.
PCT/EP2008/010729 2007-12-21 2008-12-17 Support d'enroulement pour une machine électrique WO2009083143A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007062059A DE102007062059A1 (de) 2007-12-21 2007-12-21 Wicklungsträger für eine elektrische Maschine
DE102007062059.6 2007-12-21

Publications (1)

Publication Number Publication Date
WO2009083143A1 true WO2009083143A1 (fr) 2009-07-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/010729 WO2009083143A1 (fr) 2007-12-21 2008-12-17 Support d'enroulement pour une machine électrique

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DE (1) DE102007062059A1 (fr)
WO (1) WO2009083143A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3127656B1 (fr) * 2021-09-30 2023-09-29 Valeo Systemes Dessuyage Bobine pour stator de moteur électrique, stator associé et procédé de fabrication associé

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995012912A1 (fr) * 1993-11-01 1995-05-11 Stridsberg Innovation Ab Moteur electrique et sa fabrication
DE19952479A1 (de) * 1999-10-29 2001-05-03 Wilo Gmbh Polisolation mit Filmscharnier
DE19961339A1 (de) * 1999-12-17 2001-07-05 Siemens Ag Elektrische Maschine
US20030214197A1 (en) * 2002-05-20 2003-11-20 De Luca Kenneth M. Method and apparatus for sealing an inner diameter of a segmented stator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11122855A (ja) * 1997-10-17 1999-04-30 Toshiba Corp ステータ用コイルボビンと電動機
US7026739B2 (en) 2003-05-23 2006-04-11 Honda Motor Co., Ltd Stator and insulating bobbin and a manufacturing method of the stator
JP2006141173A (ja) 2004-11-15 2006-06-01 Matsushita Electric Ind Co Ltd 電動機の固定子

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995012912A1 (fr) * 1993-11-01 1995-05-11 Stridsberg Innovation Ab Moteur electrique et sa fabrication
DE19952479A1 (de) * 1999-10-29 2001-05-03 Wilo Gmbh Polisolation mit Filmscharnier
DE19961339A1 (de) * 1999-12-17 2001-07-05 Siemens Ag Elektrische Maschine
US20030214197A1 (en) * 2002-05-20 2003-11-20 De Luca Kenneth M. Method and apparatus for sealing an inner diameter of a segmented stator

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DE102007062059A1 (de) 2009-06-25

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