EP2751905A2 - Rotor yoke - Google Patents

Rotor yoke

Info

Publication number
EP2751905A2
EP2751905A2 EP12762055.7A EP12762055A EP2751905A2 EP 2751905 A2 EP2751905 A2 EP 2751905A2 EP 12762055 A EP12762055 A EP 12762055A EP 2751905 A2 EP2751905 A2 EP 2751905A2
Authority
EP
European Patent Office
Prior art keywords
polar
poles
pole
horn
sheet
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Withdrawn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
EP12762055.7A
Other languages
German (de)
French (fr)
Inventor
Patrick Vohlgemuth
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.)
Moteurs Leroy Somer SAS
Original Assignee
Moteurs Leroy Somer SAS
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 Moteurs Leroy Somer SAS filed Critical Moteurs Leroy Somer SAS
Publication of EP2751905A2 publication Critical patent/EP2751905A2/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
    • 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
    • H02K15/022—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with salient poles or claw-shaped poles
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes

Definitions

  • the present invention relates to electrical rotating machines, and more particularly to rotor carcasses (also called rotor masses) formed by a stack of superimposed magnetic sheets.
  • a magnetic polar pole magnet sheet of 4 poles has a symmetrical layout, being constructed, as illustrated in FIG. 1, around a shaft hole 1 centered on the axis of rotation of the rotor, around which are arranged four bodies 2 of orthogonal poles which conduct the magnetic flux to the stator. At their end, these pole bodies are extended laterally each by two polar horns 3 which allow the expansion of the magnetic flux that will embrace the stator.
  • the polar wheel magnetic sheet is preferably obtained by cutting in a thin steel strip (from a few tenths to a few millimeters). The sheets are then stacked to form a rotor carcass of the desired length.
  • the rotor plate is cut in the center of the stator plate, or the rotor plate is cut independently of the stator plate.
  • the choice of cutting according to the second option is done in order to maximize what can be described as material yield, that is to say the ratio between the material actually useful for electrotechnical performance and the raw material consumed. .
  • the invention aims to limit cutting falls without degradation of electrotechnical performance of the machine.
  • EP 0 863 600 discloses a miniature motor having a rotor having poles provided with an entire polar horn and a truncated polar horn.
  • the subject of the invention is thus a rotor magnetic body for an electrical rotating machine comprising a magnetic sheet package comprising poles. provided with polar horns, which is characterized by the fact that the packet comprises plates of which at least one of the poles has at least one at least partially truncated polar horn, better a single polar horn.
  • the package may thus comprise sheets whose poles are each provided with a polar horn only.
  • the polar horns of a sheet associated with two consecutive poles are directed towards the same interpolar space.
  • all the poles of the sheets of the packet are thus made, with only one pole horn per pole, preferably respecting an axial symmetry within each sheet.
  • the package preferably comprises plates whose polar horns associated with the same pole are alternately located on one side and the other side of the pole, as one moves along the carcass.
  • the package may comprise identical sheets arranged in a reversed manner or angularly offset, so that at least one pole of the carcass has a succession of axially spaced polar horns, preferably a pole horn every other sheet along a pole.
  • the carcass may comprise at least one sheet having two adjacent poles each provided with a single polar horn, these two adjacent poles having their polar horns directed towards the same interpolar space. Better, all the plates of the carcass are thus realized.
  • the number of poles can be four or be different from four.
  • the subject of the invention is also a process for cutting a magnetic strip in order to produce the plates of a magnetic carcass, especially as defined above, in which the sheets are cut from the strip by interleaving at least two plates so that one pole of a sheet is engaged in an interpolar space of the other sheet having no polar horn.
  • Truncating according to the invention a part of the geometry of the rotor sheet makes it possible to optimize its nesting during cutting, and thus to increase the material yield.
  • the proposed solution nevertheless makes it possible to reconstruct the conventional profile (observed along the axis of rotation) of the rotor during the stacking phase of the laminations of the rotor carcass, and not to unduly affect the electrotechnical performance. Thanks to the invention, it is possible to reduce the consumption of material necessary for cutting the rotor and in exemplary embodiments, the saving in material can reach about 25%.
  • the polar horns are generally present on the length of the stack, for example due to a plate on two as mentioned above. This keeps the horns present the mechanical function of holding the windings.
  • the level of iron density remains nevertheless sufficient to ensure a flow passage to the stator.
  • the desired effect of polar expansion is maintained.
  • Reducing the density of iron in the horns also helps to reduce the disruptive effect of armature reaction from the stator to the rotor.
  • FIG. 4 represents an exemplary assembly of two rotor plates according to the invention
  • FIG. 5 illustrates the possibility of embedding the two sheets during the cutting of the strip
  • FIG. 6 represents, in isolation, a rotor plate according to the invention
  • FIG. 7 represents a rotor casing according to the invention.
  • a rotor carcass according to the invention comprises, as illustrated in FIG. 7, a bundle of assembled magnetic sheets 4, one of which is shown in isolation in FIG. 4.
  • each plate 4 comprises poles which each comprise only one polar horn 3, the pole having on the opposite side to the polar horn 3 a straight edge 5 which extends to the radially outer periphery 6 of the pole.
  • a sheet 4 has, in the example shown at four poles, two interpolar spaces 7 diametrically opposed. and two other interpolar spaces 8, also diametrically opposed.
  • the straight edges 5 meet near the hole 1 while the side where the polar horns 3 are present the pole body widens to form a shoulder 11 serving to support a coil mounted on the carcass.
  • the two consecutive shoulders 1 1 define an extension 13 which protrudes into the interpolar space 7.
  • the body 2 of a pole engages in the interpolar space 8 devoid of polar horns of the sheet with which the pole body 2 is interleaved. We thus gain in compactness when cutting the sheets in the strip.
  • the invention is not limited to the example which has just been described.
  • the invention extends to other polarities and other types of rotating electrical machines, motors or alternators.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Tires In General (AREA)

Abstract

The invention relates to a magnetic rotor core for an electric rotary machine, comprising a stack of magnetic laminations having poles provided with pole tips (3), said core being characterised in that the stack comprises laminations of which at least one of the poles has at least one at least partially truncated pole tip, preferably a single pole tip (3).

Description

Carcasse rotorique  Rotor carcass
La présente invention concerne les machines tournantes électriques, et plus particulièrement les carcasses rotoriques (encore appelées masses rotoriques) formées par un paquet de tôles magnétiques superposées. The present invention relates to electrical rotating machines, and more particularly to rotor carcasses (also called rotor masses) formed by a stack of superimposed magnetic sheets.
Classiquement, une tôle magnétique de roue polaire d'alternateur 4 pôles a un tracé symétrique, étant construite, comme illustré à la figure 1 , autour d'un trou d'arbre 1 centré sur l'axe de rotation du rotor, autour duquel sont disposés quatre corps 2 de pôles orthogonaux qui conduisent le flux magnétique vers le stator. A leur extrémité, ces corps de pôle sont prolongés latéralement chacun par deux cornes polaires 3 qui permettent l'épanouissement du flux magnétique qui va embrasser le stator.  Conventionally, a magnetic polar pole magnet sheet of 4 poles has a symmetrical layout, being constructed, as illustrated in FIG. 1, around a shaft hole 1 centered on the axis of rotation of the rotor, around which are arranged four bodies 2 of orthogonal poles which conduct the magnetic flux to the stator. At their end, these pole bodies are extended laterally each by two polar horns 3 which allow the expansion of the magnetic flux that will embrace the stator.
La tôle magnétique de roue polaire est préférentiellement obtenue par découpage dans un feuillard d'acier de faible épaisseur (de quelques dixièmes à quelques millimètres). Les tôles sont ensuite empilées pour constituer une carcasse rotorique de la longueur souhaitée.  The polar wheel magnetic sheet is preferably obtained by cutting in a thin steel strip (from a few tenths to a few millimeters). The sheets are then stacked to form a rotor carcass of the desired length.
Pour le découpage, deux options sont possibles :  For cutting, two options are possible:
la tôle rotor est découpée dans le centre de la tôle stator, ou la tôle rotor est découpée indépendamment de la tôle stator.  the rotor plate is cut in the center of the stator plate, or the rotor plate is cut independently of the stator plate.
Souvent, le choix de découpage selon la deuxième option est fait dans le but de maximiser ce que l'on peut qualifier de rendement matière, c'est-à-dire le ratio entre la matière réellement utile aux performances électrotechniques et la matière première consommée.  Often, the choice of cutting according to the second option is done in order to maximize what can be described as material yield, that is to say the ratio between the material actually useful for electrotechnical performance and the raw material consumed. .
La forme classique de la tôle rotor ne permet pas une imbrication importante de son profil lors du découpage, comme illustré aux figures 2 et 3. Cela contribue pour une large part à la génération de chutes de découpage, et par conséquent, le ratio évoqué ci- dessus reste très inférieur à 1.  The conventional shape of the rotor sheet does not allow a significant imbrication of its profile during cutting, as shown in Figures 2 and 3. This contributes to a large extent to the generation of cutting falls, and therefore the ratio referred to ci - above remains well below 1.
L'invention vise à limiter les chutes de découpage sans dégradation des performances électrotechniques de la machine.  The invention aims to limit cutting falls without degradation of electrotechnical performance of the machine.
EP 0 863 600 divulgue un moteur miniature comportant un rotor ayant des pôles pourvus d'une corne polaire entière et d'une corne polaire tronquée.  EP 0 863 600 discloses a miniature motor having a rotor having poles provided with an entire polar horn and a truncated polar horn.
L'invention a ainsi pour objet une carcasse magnétique rotorique pour machine tournante électrique comportant un paquet de tôles magnétiques comportant des pôles pourvus de cornes polaires, qui se caractérise par le fait que le paquet comporte des tôles dont l'un au moins des pôles présente au moins une corne polaire au moins partiellement tronquée, mieux une seule corne polaire. The subject of the invention is thus a rotor magnetic body for an electrical rotating machine comprising a magnetic sheet package comprising poles. provided with polar horns, which is characterized by the fact that the packet comprises plates of which at least one of the poles has at least one at least partially truncated polar horn, better a single polar horn.
Le paquet peut ainsi comporter des tôles dont les pôles sont munis chacun d'une corne polaire seulement. Les cornes polaires d'une tôle associées à deux pôles consécutifs, sont dirigées vers le même espace interpolaire. Avantageusement, tous les pôles des tôles du paquet sont ainsi réalisés, avec seulement une corne polaire par pôle, en respectant de préférence une symétrie axiale au sein de chaque tôle.  The package may thus comprise sheets whose poles are each provided with a polar horn only. The polar horns of a sheet associated with two consecutive poles are directed towards the same interpolar space. Advantageously, all the poles of the sheets of the packet are thus made, with only one pole horn per pole, preferably respecting an axial symmetry within each sheet.
Le paquet comporte de préférence des tôles dont les cornes polaires associées à un même pôle sont alternativement situées d'un côté et de l'autre du pôle, lorsque l'on se déplace le long de la carcasse.  The package preferably comprises plates whose polar horns associated with the same pole are alternately located on one side and the other side of the pole, as one moves along the carcass.
Le paquet peut comporter des tôles identiques disposées de façon retournée ou décalée angulairement, pour qu'un pôle au moins de la carcasse présente une succession de cornes polaires espacées axialement, de préférence une corne polaire une tôle sur deux le long d'un pôle.  The package may comprise identical sheets arranged in a reversed manner or angularly offset, so that at least one pole of the carcass has a succession of axially spaced polar horns, preferably a pole horn every other sheet along a pole.
La carcasse peut comporter au moins une tôle ayant deux pôles adjacents pourvus chacun d'une seule corne polaire, ces deux pôles adjacents ayant leur cornes polaires dirigées vers le même espace interpolaire. Mieux, toutes les tôles de la carcasse sont ainsi réalisées.  The carcass may comprise at least one sheet having two adjacent poles each provided with a single polar horn, these two adjacent poles having their polar horns directed towards the same interpolar space. Better, all the plates of the carcass are thus realized.
Le nombre de pôles peut être de quatre ou être différent de quatre. The number of poles can be four or be different from four.
L'invention a encore pour objet un procédé de découpage d'un feuillard magnétique en vue de réaliser les tôles d'une carcasse magnétique, notamment telle que définie ci-dessus, dans lequel les tôles sont découpées dans le feuillard en imbriquant au moins deux tôles de manière à ce qu'un pôle d'une tôle soit engagé dans un espace interpolaire de l'autre tôle ne comportant aucune corne polaire. The subject of the invention is also a process for cutting a magnetic strip in order to produce the plates of a magnetic carcass, especially as defined above, in which the sheets are cut from the strip by interleaving at least two plates so that one pole of a sheet is engaged in an interpolar space of the other sheet having no polar horn.
Le fait de tronquer selon l'invention une partie de la géométrie de la tôle rotor permet d'optimiser son imbrication lors du découpage, et ainsi augmenter le rendement matière.  Truncating according to the invention a part of the geometry of the rotor sheet makes it possible to optimize its nesting during cutting, and thus to increase the material yield.
La solution proposée permet néanmoins de reconstituer le profil conventionnel (observé selon l'axe de rotation) du rotor lors de la phase d'empilage des tôles de la carcasse rotorique, et de ne pas affecter outre mesure les performances électrotechniques. Grâce à l'invention, on peut réduire la consommation de matière nécessaire au découpage du rotor et dans des exemples de réalisation, l'économie de matière peut atteindre 25 % environ. The proposed solution nevertheless makes it possible to reconstruct the conventional profile (observed along the axis of rotation) of the rotor during the stacking phase of the laminations of the rotor carcass, and not to unduly affect the electrotechnical performance. Thanks to the invention, it is possible to reduce the consumption of material necessary for cutting the rotor and in exemplary embodiments, the saving in material can reach about 25%.
Les cornes polaires sont globalement présentes sur la longueur de l'empilage, par exemple à raison d'une tôle sur deux comme mentionné plus haut. Cela permet de conserver grâce aux cornes présentes la fonction mécanique de maintien des bobinages.  The polar horns are generally present on the length of the stack, for example due to a plate on two as mentioned above. This keeps the horns present the mechanical function of holding the windings.
Concernant les fonctions électrotechniques des cornes, le fait qu'elles soient moins nombreuses, du fait par exemple d'alterner leur présence une tôle sur deux le long d'un pôle de la carcasse, réduit la capacité de conduction magnétique de ces zones. Le niveau de densité de fer reste néanmoins suffisant pour assurer un passage du flux vers le stator. On maintien donc l'effet recherché de l'épanouissement polaire. La réduction de la densité de fer dans les cornes contribue aussi à réduire l'effet perturbateur de réaction d'induit du stator vers le rotor. Ces deux effets combinés font que les performances du circuit magnétique ainsi obtenu peuvent être finalement sensiblement meilleures qu'un circuit qui classiquement comporte des cornes complètes. Il en résulte qu'avec des cornes alternées, et toutes choses égales par ailleurs vu du stator, le besoin en courant de magnétisation du rotor est plus faible qu'avec des cornes polaires classiquement continues le long de la carcasse.  Regarding the electro-technical functions of the horns, the fact that they are less numerous, for example by alternating their presence every other sheet along a pole of the carcass, reduces the magnetic conduction capacity of these zones. The level of iron density remains nevertheless sufficient to ensure a flow passage to the stator. The desired effect of polar expansion is maintained. Reducing the density of iron in the horns also helps to reduce the disruptive effect of armature reaction from the stator to the rotor. These two combined effects mean that the performance of the magnetic circuit thus obtained may ultimately be substantially better than a circuit which conventionally comprises complete horns. As a result, with alternating horns, and all other things being equal seen from the stator, the magnetization current requirement of the rotor is lower than with polar horns conventionally continuous along the carcass.
On peut aussi noter que ce type de découpage et d'empilage augmente de façon non négligeable la surface d'échange entre le rotor et le flux d'air qui circule dans la machine, avec les potentiels effets bénéfiques que cela représente en matière de refroidissement du rotor.  It can also be noted that this type of cutting and stacking significantly increases the exchange surface between the rotor and the flow of air flowing in the machine, with the potential beneficial effects that this represents in terms of cooling of the rotor.
L'invention pourra être mieux comprise à la lecture de la description détaillée qui va suivre, d'exemples de mise en œuvre non limitatifs de celle-ci, et à l'examen du dessin annexé, sur lequel :  The invention will be better understood on reading the detailed description which follows, examples of non-limiting implementation thereof, and on examining the appended drawing, in which:
les figures 1 à 3, précédemment décrites, illustrent l'art antérieur, la figure 4 représente un exemple d'assemblage de deux tôles rotoriques selon l'invention,  FIGS. 1 to 3, previously described, illustrate the prior art, FIG. 4 represents an exemplary assembly of two rotor plates according to the invention,
la figure 5 illustre la possibilité d'imbriquer les deux tôles lors de la découpe du feuillard,  FIG. 5 illustrates the possibility of embedding the two sheets during the cutting of the strip,
la figure 6 représente isolément une tôle rotorique selon l'invention, et la figure 7 représente une carcasse rotorique selon l'invention. Une carcasse rotorique selon l'invention comporte, comme illustré à la figure 7, un paquet de tôles magnétiques 4 assemblées, dont l'une d'elles est représentée isolément à la figure 4. FIG. 6 represents, in isolation, a rotor plate according to the invention, and FIG. 7 represents a rotor casing according to the invention. A rotor carcass according to the invention comprises, as illustrated in FIG. 7, a bundle of assembled magnetic sheets 4, one of which is shown in isolation in FIG. 4.
Conformément à un exemple préféré de mise en œuvre de l'invention, chaque tôle 4 comporte des pôles qui ne comportent chacun qu'une seule corne polaire 3, le pôle présentant du côté opposé à la corne polaire 3 un bord rectiligne 5 qui s'étend jusqu'à la périphérie radialement extérieure 6 du pôle.  According to a preferred example of implementation of the invention, each plate 4 comprises poles which each comprise only one polar horn 3, the pole having on the opposite side to the polar horn 3 a straight edge 5 which extends to the radially outer periphery 6 of the pole.
Deux pôles adjacents ont leurs cornes polaires 3 dirigées vers un même espace interpolaire 7 tandis que les bords 5 dépourvus de cornes polaires délimitent un autre espace interpolaire 8. Une tôle 4 présente dans l'exemple illustré à quatre pôles, deux espaces interpolaires 7 diamétralement opposés et deux autres espaces interpolaires 8, également diamétralement opposés.  Two adjacent poles have their polar horns 3 directed towards the same interpolar space 7 while the edges 5 devoid of polar horns delimit another interpolar space 8. A sheet 4 has, in the example shown at four poles, two interpolar spaces 7 diametrically opposed. and two other interpolar spaces 8, also diametrically opposed.
Les bords rectilignes 5 se rejoignent à proximité du trou 1 tandis que du côté où les cornes polaires 3 sont présentes le corps de pôle s'élargit pour former un épaulement 11 servant d'appui à un bobinage monté sur la carcasse. Les deux épaulements 1 1 consécutifs définissent une extension 13 qui fait saillie dans l'espace interpolaire 7.  The straight edges 5 meet near the hole 1 while the side where the polar horns 3 are present the pole body widens to form a shoulder 11 serving to support a coil mounted on the carcass. The two consecutive shoulders 1 1 define an extension 13 which protrudes into the interpolar space 7.
L'absence de corne polaire 3 permet d'imbriquer davantage à la fabrication les tôles 4, comme on peut le voir à l'examen comparé des figures 3 et 5.  The absence of polar horn 3 makes it possible to further embed the sheets 4 in the manufacture, as can be seen in the comparative examination of FIGS. 3 and 5.
Lors de la découpe, le corps 2 d'un pôle s'engage dans l'espace interpolaire 8 dépourvu de cornes polaires de la tôle avec laquelle ce corps de pôle 2 est imbriqué. On gagne ainsi en compacité lors du découpage des tôles dans le feuillard.  During cutting, the body 2 of a pole engages in the interpolar space 8 devoid of polar horns of the sheet with which the pole body 2 is interleaved. We thus gain in compactness when cutting the sheets in the strip.
Dans la carcasse rotorique formée par l'assemblage des tôles, on observe le long d'un pôle de la carcasse la présence d'une corne polaire 3 toutes les deux tôles, ce qui fait que globalement la carcasse présente le même profil, lorsqu'observée selon son axe de rotation, qu'une carcasse conventionnelle. Les extensions 13 alternent dans la direction axiale, tout comme les cornes polaires 3.  In the rotor carcass formed by the assembly of the sheets, the presence of a polar horn 3 is observed along each pole of the carcass 3, so that, overall, the carcass has the same profile, when observed along its axis of rotation, that a conventional carcass. The extensions 13 alternate in the axial direction, as do the polar horns 3.
L'invention n'est pas limitée à l'exemple qui vient d'être décrit. L'invention s'étend à d'autres polarités et à d'autres types de machines électriques tournantes, moteurs ou alternateurs.  The invention is not limited to the example which has just been described. The invention extends to other polarities and other types of rotating electrical machines, motors or alternators.
L'expression « comportant un » doit se comprendre comme étant synonyme de The phrase "with one" should be understood as synonymous with
« comportant au moins un » sauf si le contraire est spécifié. "With at least one" unless otherwise specified.

Claims

REVENDICATIONS
1. Carcasse magnétique rotorique pour machine tournante électrique, comportant un paquet de tôles magnétiques comportant des pôles pourvus de cornes polaires (3), carcasse caractérisée par le fait que le paquet comporte des tôles dont l'un au moins des pôles présente au moins une corne polaire au moins partiellement tronquée, mieux une seule corne polaire (3), 1. Rotary magnetic body for an electric rotating machine, comprising a magnetic sheet of metal bundle comprising poles provided with polar horns (3), characterized in that the bundle comprises plates of which at least one of the poles has at least one polar horn at least partially truncated, better a single polar horn (3),
le paquet comportant des tôles dont les cornes polaires (3) associées à un même pôle sont alternativement situées d'un côté et de l'autre du pôle. the package comprising plates whose polar horns (3) associated with the same pole are alternately located on one side and the other of the pole.
2. Carcasse selon la revendication 1, le paquet comportant des tôles dont les pôles sont munis chacun d'une corne polaire (3) seulement.  2. Carcass according to claim 1, the package comprising sheets whose poles are each provided with a polar horn (3) only.
3. Carcasse selon l'une quelconque des revendications précédentes, le paquet comportant des tôles identiques disposées de façon retournée ou décalée angulairement pour qu'un pôle au moins présente le long de la carcasse une succession de cornes polaires espacées axialement.  3. Carcass according to any one of the preceding claims, the package comprising identical sheets arranged in a manner reversed or angularly offset so that at least one pole has along the carcass a succession of axially spaced polar horns.
4. Carcasse selon l'une quelconque des revendications précédentes, comportant une tôle ayant deux pôles adjacents pourvus chacun d'une seule corne polaire, ces deux pôles adjacents ayant leur cornes polaires (3) dirigées vers le même espace interpolaire (7).  4. Carcass according to any one of the preceding claims, comprising a sheet having two adjacent poles each provided with a single pole horn, these two adjacent poles having their polar horns (3) directed towards the same interpolar space (7).
5. Carcasse selon quelconque des revendications précédentes, le nombre de pôles étant de 4.  5. Carcass according to any one of the preceding claims, the number of poles being 4.
6. Procédé de découpage d'un feuillard magnétique, notamment en vue de réaliser une carcasse magnétique selon l'une quelconque des revendications 1 à 5, dans lequel les tôles sont découpées dans le feuillard en imbriquant au moins deux tôles de manière à ce qu'un pôle d'une tôle soit engagé dans un espace interpolaire (8) de l'autre tôle, cet espace interpolaire (8) ne comportant aucune corne polaire.  6. A method of cutting a magnetic strip, especially for producing a magnetic carcass according to any one of claims 1 to 5, wherein the sheets are cut in the strip by interleaving at least two sheets so that one pole of one sheet is engaged in an interpolar space (8) of the other sheet, this interpolar space (8) having no polar horn.
7. Tôle magnétique convenant à la fabrication d'une carcasse selon l'une quelconque des revendications 1 à 6, comportant deux pôles adjacents pourvus chacun d'une seule corne polaire, les bords de ces pôles dépourvus de cornes polaires délimitant un espace interpolaire (8). 7. Magnetic sheet suitable for the manufacture of a carcass according to any one of claims 1 to 6, comprising two adjacent poles each provided with a single pole horn, the edges of these poles lacking polar horns defining an interpolar space ( 8).
8. Tôle selon la revendication 7, présentant deux espaces interpolaires (8) délimités par des bords (5) de pôles dépourvus de cornes polaires, les deux espaces interpolaires (8) étant diamétralement opposés. 8. Sheet according to claim 7, having two interpolar spaces (8) delimited by edges (5) poles devoid of polar horns, the two interpolar spaces (8) being diametrically opposed.
9. Tôle selon la revendication 8, présentant deux espaces interpolaires (7) délimités par des bords de pôles présentant chacun une corne polaire (3), les deux espaces interpolaires (7) étant diamétralement opposés, des extensions (13) faisant saillie dans chacun de ces espaces interpolaires (7) pour servir d'appui à un bobinage disposé sur la carcasse.  9. Sheet according to claim 8, having two interpolar spaces (7) delimited by pole edges each having a polar horn (3), the two interpolar spaces (7) being diametrically opposed, extensions (13) projecting into each of these interpolar spaces (7) to serve as a support for a coil disposed on the carcass.
EP12762055.7A 2011-08-30 2012-08-01 Rotor yoke Withdrawn EP2751905A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1157638A FR2979495A1 (en) 2011-08-30 2011-08-30 ROTORIC CARCASS.
PCT/IB2012/053933 WO2013030695A2 (en) 2011-08-30 2012-08-01 Rotor core

Publications (1)

Publication Number Publication Date
EP2751905A2 true EP2751905A2 (en) 2014-07-09

Family

ID=46888504

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12762055.7A Withdrawn EP2751905A2 (en) 2011-08-30 2012-08-01 Rotor yoke

Country Status (6)

Country Link
US (1) US20140191611A1 (en)
EP (1) EP2751905A2 (en)
CN (2) CN102969818A (en)
FR (1) FR2979495A1 (en)
RU (1) RU2014106784A (en)
WO (1) WO2013030695A2 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6121711A (en) * 1993-11-08 2000-09-19 Mitsubishi Denki Kabushiki Kaisha Rotary motor and production method thereof, and laminated core and production method thereof
ITPN960017A1 (en) * 1996-03-12 1997-09-12 Sole Spa ELECTRIC MACHINE, IN PARTICULAR ELECTRIC MOTOR
JP3234791B2 (en) * 1997-03-06 2001-12-04 マブチモーター株式会社 Small motor
US6211595B1 (en) * 1997-07-18 2001-04-03 Sankyo Seiki Mfg. Co., Ltd. Armature structure of toroidal winding type rotating electric machine
JP2001309622A (en) * 2000-04-19 2001-11-02 Unisia Jecs Corp Switched-reluctance motor
DE10216098A1 (en) * 2002-04-12 2003-10-23 Bosch Gmbh Robert Rotor for electrical machine, especially motor, has lamella with at least one fixing element made in one piece with lamella, and permanent magnet held between two fixing elements of one or more lamellas
US7698803B2 (en) * 2004-09-09 2010-04-20 Mitsui High-Tec, Inc. Method of manufacturing laminated core
US9634529B2 (en) * 2011-12-05 2017-04-25 Fisher & Paykel Appliances Ltd. Electrical machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2013030695A2 *

Also Published As

Publication number Publication date
RU2014106784A (en) 2015-10-10
WO2013030695A3 (en) 2013-09-06
CN102969818A (en) 2013-03-13
FR2979495A1 (en) 2013-03-01
US20140191611A1 (en) 2014-07-10
WO2013030695A2 (en) 2013-03-07
CN202713006U (en) 2013-01-30

Similar Documents

Publication Publication Date Title
FR2960355B1 (en) ROTARY ELECTRIC MACHINE WITH IMPROVED MAGNETIC RESISTANCE
EP3130061B1 (en) Stator for a rotary electric machine
EP3130059A2 (en) Rotor for a rotary electric machine
EP2564491B1 (en) Rotating electric machine in particular for a motor vehicle starter
EP2209193B1 (en) Rotating electric machine with saliant poles
WO2015155732A2 (en) Rotor for a rotary electric machine
FR2965987A1 (en) ROTARY ELECTRIC MACHINE
WO2013124787A1 (en) Rotor of a rotating machine with flux concentration
WO2021123539A1 (en) Rotor of a rotary electric machine
WO2012042135A1 (en) Synchronous rotating electrical machine with a doubly excited rotor
EP2751905A2 (en) Rotor yoke
FR2938385A1 (en) ROTATING ELECTRICAL MACHINE WITH DOUBLE EXCITATION OF HOMOPOLAR TYPE
WO2013072892A2 (en) Rotor of a rotary electric machine with a permanent magnet type
EP2019472B1 (en) Rotating dynamoelectric machine with interior rotor producing double polarisation on its stator by permanent magnet and by winding
EP4113796A1 (en) Rotating electrical machine
WO2019206830A1 (en) Rotor for a rotating electrical machine
WO2021123528A1 (en) Rotor of a rotary electric machine
EP4038723A1 (en) Rotor for a rotating electrical machine
EP1113564A1 (en) Rotary electrical machine the stator and/or rotor of which comprise peripheral slots
WO2008026032A1 (en) Electric machine with stator equipped with remote-controlled claws and windings
EP2529471A1 (en) Rotor having permanent magnets
BE504910A (en)
WO2015145008A1 (en) Rotary electric machine with optimised phase coupling and corresponding winding-manufacturing method
WO2013072890A2 (en) Rotor of a rotary electric machine with flux concentration

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20140331

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20141022