EP1358698B1 - Ensemble de transfert de courant - Google Patents

Ensemble de transfert de courant Download PDF

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Publication number
EP1358698B1
EP1358698B1 EP02702349A EP02702349A EP1358698B1 EP 1358698 B1 EP1358698 B1 EP 1358698B1 EP 02702349 A EP02702349 A EP 02702349A EP 02702349 A EP02702349 A EP 02702349A EP 1358698 B1 EP1358698 B1 EP 1358698B1
Authority
EP
European Patent Office
Prior art keywords
current
transfer assembly
assembly according
disc
elements
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.)
Expired - Lifetime
Application number
EP02702349A
Other languages
German (de)
English (en)
Other versions
EP1358698A2 (fr
Inventor
Peter Zilch
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.)
Schunk Bahn und Industrietechnik GmbH Germany
Original Assignee
Schunk Bahn und Industrietechnik GmbH Germany
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 Schunk Bahn und Industrietechnik GmbH Germany filed Critical Schunk Bahn und Industrietechnik GmbH Germany
Publication of EP1358698A2 publication Critical patent/EP1358698A2/fr
Application granted granted Critical
Publication of EP1358698B1 publication Critical patent/EP1358698B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/14—Fastenings of commutators or slip-rings to shafts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/08—Slip-rings
    • H01R39/085—Slip-rings the slip-rings being made of carbon

Definitions

  • the invention relates to a power transmission arrangement for electrical machines, in particular generators of z.
  • electrical machines in particular generators of z.
  • wind turbines comprising a Wellemit outgoing therefrom and coaxially surrounding electrically conductive grinding elements and on these supporting contact elements such as carbon brushes, wherein various electrical phases with electrically mutually insulated grinding elements via windings of the electrical machine leading current paths such as conductor pins or rods are connected ,
  • the current can be transmitted via slip rings on carbon brushes, which are supported on the former.
  • slip rings usually those made of metal are used, which determines the abrasion of carbon brushes.
  • carbon brushes can be impregnated.
  • slip rings are applied to made of plastic molding compounds support body. From the support bodies go out sockets, which engage in holes in the coal grinding ring.
  • the present invention is based on the problem, a power transmission arrangement of the type mentioned in such a way that a secure power transmission is always guaranteed. According to another aspect, it should be ensured that the arrangement has a high vibration stability. Also to be created with structurally simple measures the possibility to make a change in the power transmission areas. Furthermore, it should be ensured that the resulting coal dust does not affect the electrical functionality.
  • the grinding elements are made of Koblenstoffmaterial or containing disc elements that the disc element has openings that inserted in at least one opening made of electrically conductive material with one of the current paths socket inserted snugly in that the bushing protrudes toward both side surfaces of the disk element with front wheel sections of dimension H, so that along each side surface of the disk element there is a contact plate of electrically conductive material which abuts flat against the side surface
  • Openings extending, which have a perforations of the disc element corresponding hole pattern, and that respective Stim edge portion of the socket is fitted in one of the openings of the respective contact plate.
  • a carbon loop is not used, which is applied to a carrier. Rather, one is made of uniform material existing disc element may be used, which may consist of conventional materials used for the transmission of currents such as carbon, graphite, carbon graphite or metal graphite. Since the disc element consists of a uniform material, no different coefficients of expansion can occur, which leads to an impairment of the current transmission.
  • the disc element is provided with openings, wherein in at least one socket is inserted in the fit, which protrudes to both side surfaces of the disc element.
  • the at least one bushing guides one of the power bolts or rods over which the current is to be dissipated via the carbon disk.
  • a contact surface consisting of electrically conductive material lying flat on the side surface extends with apertures, one of which is penetrated by the bush or by end edge portions projecting beyond the side surfaces.
  • the end edge portions of the socket are fitted in the openings of the contact plates as pressed.
  • the invention provides that in the existing carbon material disc element z. B. made of copper socket is fitted with a precisely defined fit.
  • the bush is on each side of the disc member by a degree that corresponds to the plate member - also called flanged wheel - in its thickness. Then turn on both sides of the protruding sections of the sleeve, the plate elements or flanged wheels with the same hole pattern and fit.
  • more than one bush can be fitted in particular in snug fit in a flanged wheel.
  • the contact plate has a circumferential angled edge which engages in a corresponding circumferential groove in the side surface of the disk element.
  • the sleeves or sockets and / or the contact plates should be made of or contain copper. Furthermore, it is provided that the disc element in the contact area to the socket or the sockets and / or contact plates provided with electrically conductive material as copper-plated, in particular is spray-coated. As a result, a secure power transmission is additionally ensured.
  • another proposal of the invention provides that the live conductor pins or rods are connected via lamellar contacts with the sockets, via which a power transmission to the disc elements he follows.
  • the intermediate space between the disk elements connected to different electrical phases is covered over the whole area.
  • the gap is covered by a circumferentially encircling ribs having insulating body.
  • the ribs may have different diameters, wherein in particular a rib extends in the central region of the insulating body, whose diameter is greater than the diameter of the remaining ribs.
  • a kind of partition is formed, which additionally ensures that coal dust can not lead to electrical interference.
  • the insulating body itself consists in particular of plastic material such as Glasmaschinebuchstöffisoliermaterial.
  • the shaft is mounted on two sides, in particular in its respective end region.
  • the shaft may be mounted in end walls of a housing which receives the power transmission arrangement.
  • a heat exchanger such as a surface cooler, can be provided in the housing.
  • leading to the heat exchanger lines can be connected to a cooling circuit of the electrical machine itself Alternatively, there is the possibility that the lines are connected to an internal cooling circuit. In that regard, however, reference is made to sufficient cooling systems.
  • a unit comprising the shaft, the disk elements and the conductor bolts or rods is modularly constructed.
  • a phase of the electric machine may be connected to a plurality of shingling elements arranged directly next to one another on the shaft.
  • a system is provided that can be used for multiple power transmission areas. So z. B. for power transmission of 500 A, one disk element per phase are used, whereas z. B. at a power transmission of 800 A each two disk elements per phase are arranged on the shaft.
  • a power transmission arrangement is provided in particular intended for wind generators available, the long service life and thus minimizing maintenance and service times.
  • the contact disk unit is completely interchangeable and regenerable. Due to the closed design, so the complete covering of the gap between the contact disks compactness of the arrangement is possible, which leads to a cost reduction, especially for the other necessary components such as cooling and housing.
  • a Stromübertragungsau instrument which comprises a grinding element body 10, is derived from the not shown carbon brushes in the usual way current.
  • a grinding element body 10 is derived from the not shown carbon brushes in the usual way current.
  • the phases T, S and R are each connected to a grinding element 12, 14, 16.
  • the remaining fourth grinding element 18 is the neutral, which is at ground potential, ie at the potential of a shaft 20, from which the grinding elements 12, 14, 16, 18 go out.
  • the grinding elements 12, 14, 16, 18 are disc elements made of carbon material such as graphite, carbon graphite, metal graphite or other carbon materials known in the field of power transmission.
  • a corresponding disc element - hereinafter simplified carbon disc called - is in the 4 to 6 shown.
  • the carbon disk 22 has a cylindrical shape, wherein the peripheral surface 24 is a contact or sliding surface for a carbon brush, not shown, is discharged via the current.
  • the coal disc can be peripherally slotted, as is known from conventional slip rings ago.
  • the carbon disk 22 has openings - hereinafter called holes - on, namely a central bore 26 for the shaft 20 and holes 28, 30, 32 of a first diameter and holes 34, 36, 38 of a preferably deviating diameter.
  • each side surface 40, 42 spaced from the sliding surface 24 a concentric with the coal disc longitudinal axis 44 circumferential groove 46, 48 is provided.
  • a bush made of electrically conductive material, in particular copper bushing is fitted with a precisely defined fit dimension as pressed.
  • a socket 50 is shown in dashed lines in FIG Fig. 5 located.
  • the corresponding bush 50 protrudes with a dimension H over the respective side surface 40, 42 of the carbon disk 22.
  • On the side surfaces 40, 42 of the full-carbon disk 22 is then arranged in each case a flange to be designated as a contact plate 52, which has the same hole pattern as the carbon disk 22 and with fit on the side surfaces 40, 42 superior edge portions 54, 56 of the sleeve or sleeve 50 are pressed.
  • the thickness of the contact plate 52 is the dimension H of the sleeve 50 by which it protrudes beyond the side surfaces 40, 42.
  • the contact plate 52 has a peripheral edge-side laterally projecting web 58, which is adapted to the groove 46 and 48 in the side surfaces 40, 42 of the carbon disk 22, so that when resting on the side surfaces 40, 42 contact plates 52, 54 the angled edges, so the web-shaped portions 58 engage in the grooves 46, 48.
  • the holes 34, 36, 38 are then penetrated by electrically insulated or made of electrically insulating material fastening or clamping bolt 60, via which the grinding wheels 12, 14, 16, 18 with extending therebetween insulating bodies 62, 64, 66, 68 between flange washers 70, 72 tightened and tightened.
  • a spring element such as disc spring assembly 82 is disposed between the screws 74, 76, 78 and bottom surface of a penetrated by the bolt 60 in the flange 74 recess 80.
  • bores 28, 30, 32 of larger diameter are penetrated by current paths in the form of conductor bolts 84, wherein in each case one to one of the phases T, S and R of the windings of the generator leading conductor bolt 84 with one of the carbon disks 12, 14, 16 electrically is conductively connected and electrically isolated from the remaining.
  • the conductor bolt 84 is electrically conductively connected to the carbon disk 14. Consequently, located in the corresponding bore the snug fit bushing 50, wherein the conductor bolt 84 is electrically conductively connected to the socket 50 via a known from the high-voltage technology fin contact 86.
  • phase T, S and R contact discs 12, 14, 16 are mutually, to the supporting shaft 20 and opposite the grounded carbon disk 18 and in the embodiment with respect to the flange 72 via the insulating body 62, 64, 66, 68 electrically isolated.
  • the basic structure of the insulating body 62, 64, 66, 68 is based on an insulating 88 in the FIGS. 9 and 10 explained in more detail.
  • the insulating body 88 in particular is made of plastic material such as Glasmaschinebuchstoffisoliermaterial, has a disc shape with openings 90, 92, 94, 96, 98, 100, 102, which extend in the mounted abrasive element body 10 in alignment with the holes 26, 28, 30, 32, 34, 36, 38, ie Both the shaft 20 and the fastening bolt 60 and the conductor bolt 84 are interspersed on the circumference, the insulating body 38 has ribs 106, 108 extending transversely to its longitudinal axis 104, wherein the rib 108 running in the center region has a larger outside diameter.
  • the middle rib 108 is thereby virtually a partition wall between the adjacent lying at different potential elements, ie on the one hand between the flange 72 and the carbon plate 12 and on the other hand between the carbon plates 12, 14 and 14, 16 and 16, 18.
  • the shaft 20 is mounted on two sides, d. H. on the one hand at its free outer end 110 and on the other hand via the flange 72. This results in a high vibration stability.
  • the shaft 22 or the flange disk 72 can be mounted in frontal housing walls 112, 114 of a housing 116, as is known from wind power machines.
  • heat exchangers 118, 120 may be arranged in the form of plate coolers, which may be arranged either in an internal cooling circuit or in a cooling circuit of the electrical machine itself.
  • a fan wheel 122 starts from the front flange disk 70.
  • the grinding wheel body 10 with the full carbon slices 12, 14, 16, 18 and extending therebetween insulating bodies 62, 64, 66, 68 and this unit Frontally limiting flange 70, 72 is recognizable modular, so there is the possibility réellestecken on the shaft 20 depending on the size of the current transmission a corresponding number of carbon disks, with several of the phases T, S and R associated carbon discs directly next to each other and are electrically conductive with each other on the shaft 20 are arranged.
  • the phases S, T and R are each associated with two carbon disks 124, 126 and 128, 130 and 132, 134, which have a structure, as this in connection with the Fig. 4 to 8 has been described in detail.

Landscapes

  • Motor Or Generator Current Collectors (AREA)
  • Undergarments, Swaddling Clothes, Handkerchiefs Or Underwear Materials (AREA)
  • Color Image Communication Systems (AREA)
  • Hybrid Cells (AREA)
  • Vending Machines For Individual Products (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Seal Device For Vehicle (AREA)

Claims (19)

  1. Dispositif de transfert de courant pour machines électriques, en particulier pour générateurs d'installations éoliennes par exemple, comprenant un arbre (20) avec des éléments frotteurs (12, 14, 16, 18, 22, 124, 126, 128, 130, 132, 134) électroconducteurs partant de celui-ci et l'entourant coaxialement et sur lesquels s'appuient des éléments de contact tels que des balais de charbon, sachant que différentes phases électriques sont reliées à des éléments frotteurs électriquement isolés les uns par rapport aux autres par l'intermédiaire de voies de courant telles que des broches ou des barres conductrices (84) menant à des bobines de la machine électrique,
    caractérisé en ce
    que les éléments frotteurs (12, 14, 16, 18, 22, 124, 126, 128, 130, 132, 134) sont des éléments discoïdes constitués de carbone ou d'un matériau en contenant, que l'élément discoïde (52) présente des ouvertures (26, 28, 30, 32, 34, 36, 38), que dans au moins une ouverture est introduite et ajustée avec précision une douille (50) constituée d'un matériau électroconducteur et reliée à l'une des voies de courant (84), qu'avec des sections de bord frontales (54, 56), la douille (50) fait saillie d'une cote H sur les deux surfaces latérales (40, 42) de l'élément discoïde (22), que le long de chaque surface latérale (40, 42) de l'élément discoïde (22) s'étend une plaque de contact (52) s'appuyant en nappe sur la surface latérale et qui est constituée d'un matériau électroconducteur et est munie d'ouvertures (26, 28, 30, 32, 34, 36, 38) qui présentent un gabarit de perçage correspondant aux ouvertures de l'élément discoïde, et que chaque section de bord frontale (54, 56) de la douille (50) est emboîtée dans l'une des ouvertures (28, 30, 32) de la plaque de contact correspondante.
  2. Dispositif de transfert de courant selon la revendication 1,
    caractérisé en ce
    que la section de bord frontale (54, 56) est enfoncée dans l'ouverture (28, 30, 32) de la plaque de contact (52).
  3. Dispositif de transfert de courant selon la revendication 1 ou 2,
    caractérisé en ce
    que la plaque de contact (52) présente une épaisseur qui correspond à la cote H de la section de bord frontale (54, 56) de la douille (50) faisant saillie sur la surface latérale (40, 42) de l'élément discoïde (22), et se fond en particulier en affleurant avec la face frontale de la douille (50).
  4. Dispositif de transfert de courant selon la revendication 1,
    caractérisé en ce
    que la douille (50) et/ou la plaque de contact (52) sont constituées de cuivre et/ou en contiennent.
  5. Dispositif de transfert de courant selon la revendication 1,
    caractérisé en ce
    la plaque de contact (52) présente un bord circonférentiel coudé (58) qui s'engage dans une gorge circonférentielle correspondante (46, 48) pratiquée dans la surface latérale (40, 42) de l'élément discoïde (22).
  6. Dispositif de transfert de courant selon la revendication 1,
    caractérisé en ce
    que la broche ou la barre électroconductrice (84) est reliée à la douille (50), en particulier par un contact à lamelle, par l'intermédiaire de laquelle a lieu un transfert de courant vers l'élément discoïde (14).
  7. Dispositif de transfert de courant selon la revendication 1,
    caractérisé en ce
    que dans la zone de contact avec les plaques de contact (52) et/ou les douilles (50), les éléments discoïdes (22) sont munis d'un matériau électroconducteur, par exemple par cuivrage, en particulier par cuivrage par pulvérisation.
  8. Dispositif de transfert de courant selon la revendication 1,
    caractérisé en ce
    que l'espace intermédiaire entre des éléments discoïdes (22) reliés à différents pôles est recouvert sur toute sa surface.
  9. Dispositif de transfert de courant selon la revendication 8,
    caractérisé en ce
    que l'espace intermédiaire entre les éléments discoïdes (12, 14, 16, 18) présentant différents potentiels électriques, et/ou par rapport à un élément adjacent tel qu'une poulie à bord (72), est occupé par un corps isolant (62, 64, 66, 68, 88) présentant des nervures (106, 108) circonférentielles.
  10. Dispositif de transfert de courant selon la revendication 9,
    caractérisé en ce
    que les nervures (106, 108) s'étendant transversalement par rapport à l'axe longitudinal du corps isolant (88) présentent différents diamètres.
  11. Dispositif de transfert de courant selon la revendication 9 ou 10,
    caractérisé en ce
    que dans la zone médiane du corps isolant (88) s'étend une nervure (108) dont le diamètre est supérieur à celui des autres nervures (106).
  12. Dispositif de transfert de courant selon au moins une des revendications 9 à 11,
    caractérisé en ce
    que le corps isolant (88) est en particulier constitué d'une matière synthétique telle qu'un matériau synthétique isolant à base de fibres de verre.
  13. Dispositif de transfert de courant selon la revendication 1,
    caractérisé en ce
    que l'arbre (20) est logé à chacune de ses extrémités (110).
  14. Dispositif de transfert de courant selon la revendication 1 ou 13,
    caractérisé en ce
    que les éléments discoïdes (12, 14, 16, 18) et les corps isolants (62, 64, 66, 68) disposés sur l'arbre (20) forment une unité de construction modulaire.
  15. Dispositif de transfert de courant selon la revendication 1,
    caractérisé en ce
    qu'une phase de la machine électrique peut être associée à plusieurs éléments discoïdes (124, 126 ; 128, 130 ; 132, 134) disposés directement côte à côte sur l'arbre (20).
  16. Combinaison d'une cage avec le dispositif de transfert de courant selon au moins la revendication 9,
    caractérisée en ce
    que l'arbre (20) et les éléments discoïdes (12, 14, 16, 18, 124, 126, 128, 130, 132, 134) ainsi que les corps isolants (62, 64, 66, 68) forment une unité disposée dans la cage (116) dont les parois frontales (112, 114) logent l'arbre (20).
  17. Combinaison selon la revendication 16,
    caractérisée en ce
    qu'un échangeur thermique (118, 120) est disposé à l'intérieur de la cage (116).
  18. Combinaison selon la revendication 17,
    caractérisée en ce
    que l'échangeur thermique (118, 120) est un refroidisseur à surface étendue.
  19. Combinaison selon la revendication 17 ou 18,
    caractérisée en ce
    que l'échangeur thermique (118,120) est relié à un circuit de refroidissement de la machine électrique.
EP02702349A 2001-02-08 2002-02-06 Ensemble de transfert de courant Expired - Lifetime EP1358698B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10106119 2001-02-08
DE10106119A DE10106119A1 (de) 2001-02-08 2001-02-08 Stromübertragungsanordnung
PCT/EP2002/001211 WO2002063727A2 (fr) 2001-02-08 2002-02-06 Ensemble de transfert de courant

Publications (2)

Publication Number Publication Date
EP1358698A2 EP1358698A2 (fr) 2003-11-05
EP1358698B1 true EP1358698B1 (fr) 2009-09-16

Family

ID=7673534

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02702349A Expired - Lifetime EP1358698B1 (fr) 2001-02-08 2002-02-06 Ensemble de transfert de courant

Country Status (7)

Country Link
US (1) US7098568B2 (fr)
EP (1) EP1358698B1 (fr)
AT (1) ATE443356T1 (fr)
DE (2) DE10106119A1 (fr)
DK (1) DK1358698T3 (fr)
ES (1) ES2331691T3 (fr)
WO (1) WO2002063727A2 (fr)

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DE102004005368B4 (de) * 2004-02-03 2008-11-20 Schunk Metall Und Kunststoff Gmbh Anordnung zur Stromübertragung
US8547786B2 (en) * 2007-06-29 2013-10-01 Westerngeco L.L.C. Estimating and using slowness vector attributes in connection with a multi-component seismic gather
FR2928772B1 (fr) * 2008-03-14 2014-06-13 Centre Nat Etd Spatiales Dispositif pour prevenir l'etablissement d'un arc electrique entre deux elements conducteurs.
CN102522856A (zh) * 2011-12-28 2012-06-27 大连宜顺机电有限公司 变桨滑环
DE102012220293A1 (de) * 2012-11-07 2014-05-08 Wobben Properties Gmbh Schleifringübertrager
DE102016203762A1 (de) 2016-03-08 2017-09-14 Krones Ag Schleifringübertrager für Rundläufermaschinen
EP3618204A1 (fr) * 2018-08-27 2020-03-04 Siemens Aktiengesellschaft Corps de bague collectrices
EP3895258B1 (fr) * 2018-12-14 2023-10-18 Saint-Augustin Canada Electric Inc. Ensemble bague collectrice
FR3092712A1 (fr) * 2019-02-12 2020-08-14 Valeo Equipements Electriques Moteur Machine électrique synchrone polyphasée à commutateur mécanique
EP3925061A1 (fr) * 2019-02-12 2021-12-22 Valeo Equipements Electriques Moteur Machine électrique synchrone polyphasée à commutateur mécanique

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Also Published As

Publication number Publication date
DK1358698T3 (da) 2010-01-04
US7098568B2 (en) 2006-08-29
WO2002063727A3 (fr) 2002-09-26
DE10106119A1 (de) 2002-09-19
EP1358698A2 (fr) 2003-11-05
ATE443356T1 (de) 2009-10-15
DE50213848D1 (de) 2009-10-29
US20040130230A1 (en) 2004-07-08
WO2002063727A2 (fr) 2002-08-15
ES2331691T3 (es) 2010-01-13

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