AU2014304638B2 - Apparatus for transmitting an electric current to a rotatably mounted rotation body - Google Patents

Apparatus for transmitting an electric current to a rotatably mounted rotation body Download PDF

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Publication number
AU2014304638B2
AU2014304638B2 AU2014304638A AU2014304638A AU2014304638B2 AU 2014304638 B2 AU2014304638 B2 AU 2014304638B2 AU 2014304638 A AU2014304638 A AU 2014304638A AU 2014304638 A AU2014304638 A AU 2014304638A AU 2014304638 B2 AU2014304638 B2 AU 2014304638B2
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AU
Australia
Prior art keywords
contact piece
rotation body
contact
slip ring
rotatably mounted
Prior art date
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Active
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AU2014304638A
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AU2014304638A1 (en
Inventor
Ulrich Hartmann
Marian Rakowicz
Christian Schiller
Robert Schwengber
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Innomotics GmbH
Original Assignee
Innomotics 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.)
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Publication date
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Publication of AU2014304638A1 publication Critical patent/AU2014304638A1/en
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Publication of AU2014304638B2 publication Critical patent/AU2014304638B2/en
Assigned to INNOMOTICS GMBH reassignment INNOMOTICS GMBH Request for Assignment Assignors: SIEMENS AKTIENGESELLSCHAFT
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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
    • H01R39/38—Brush holders
    • H01R39/383—Brush holders characterised by the electrical connection to the brush holder
    • 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
    • H01R39/38—Brush holders
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
    • 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
    • H01R39/38—Brush holders
    • H01R39/40—Brush holders enabling brush movement within holder during current collection
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Abstract

The invention relates to an apparatus for transmitting an electric current to a rotatably mounted rotation body (10) which comprises at least two slip rings (11), having a contact piece support (1) and at least two contact pieces (2), wherein the contact piece support (1) is mechanically connected to the respective contact piece (2), wherein the respective contact piece (2) can be arranged in such a way that, when it is installed in an electrical machine with the rotatably mounted rotation body (14), the respective contact piece (2) is in contact with the respective slip ring (11). The invention further relates to an electrical machine having an apparatus of this kind and a rotation body (10) of this kind. In order to develop the apparatus to the effect that at least two electrical phases can be transmitted to the rotation body (10) with a high degree of reliability, it is proposed that an electrically insulating layer (3) is arranged between the contact piece support (1) and the respective contact piece (2).

Description

PCT/EP2014/066452 / 2013P10356WO 1
Description
Apparatus for transmitting an electric current to a rotatably mounted rotation body
The invention relates to an apparatus for transmitting an electric current to a rotatably mounted rotation body, which comprises at least two slip rings, having a contact piece support and at least two contact pieces, wherein the contact piece support is mechanically connected to the respective contact piece, wherein the respective contact piece can be arranged in such a way that, when it is installed in an electrical machine with the rotatably mounted rotation body, the respective contact piece is in contact with the respective slip ring. The invention further relates to an electrical machine having an apparatus of this kind and a rotation body of this kind.
An apparatus of this kind is used, for example, in the context of separately excited synchronous machines because the market requires low-speed synchronous machines with high torque, e.g. for mills or compressors. This type of machinery is characterized, inter alia, by the large diameter of the rotor. The rotor in these two solutions consists of the actual driven shaft and the electrically active rotor parts. The electrical excitation of such machinery takes place, inter alia, via large-diameter slip rings. The slip ring is usually arranged in the machine in order to make the slip ring line between a pole winding and the slip ring as short as possible.
The production and assembly of the necessary slip rings is expensive and the slip ring segments for assembly require the utmost geometrical precision, in particular radial and axial
PCT/EP2014/066452 / 2013P10356WO 2 run-out.
Inter alia, brush holder supports are required for the excitation of electrical machines. Hitherto these brush holder supports were produced as a function of the current load and the contact pressure of the brush holder support as well as the structural requirements for each slip ring diameter.
At present brush holder supports are fastened to the support structure and the fastening and adjustment of the brushes takes place via brush holders which are radially adjusted to the slip ring tread. The slip ring requires high dimensional and running precision for this.
An apparatus for transmitting an electric current to a rotatably mounted rotation body is known from GB 697 637 A, wherein the rotation body has two electrically connected slip rings. The apparatus has a frame which is held in position by means of cables in an axial direction and in a circumferential direction. The frame has two brushes each connected to the frame by means of a spring, wherein the respective brushes should be supported on the slip ring. Furthermore, the frame has two wheels which operate respectively on the respective slip ring.
The task of the invention is to develop the aforementioned apparatus to the effect that at least two electrical phases can be transmitted to the rotation body with a high degree of reliability.
This object is achieved in that an electrically insulating layer is arranged between the contact piece support and the respective contact piece in an apparatus of the aforementioned 3 2014304638 14 Aug 2017 and nanostructure on the surface of insulators.
The object of the invention is to develop the aforementioned apparatus to the effect that at least two electrical phases can be transmitted to the rotation body with a high degree of reliability, or to substantially overcome or at least ameliorate one or more disadvantages of existing arrangements.
This object is achieved by an apparatus of the aforementioned kind, such that the apparatus has at least one guide element, wherein the respective guide element can be arranged such that when installed in an electrical machine with the rotatably mounted rotation body, the respective guide element is in contact with at least one surface of the rotatably mounted rotation body, wherein two respective guide elements can be arranged such than when installed in an electrical machine with the rotatably mounted rotation body, the respective surface is arranged between the two guide elements.
Furthermore, this object is achieved by an electrical machine with an apparatus according to the invention and a rotatably mounted rotation body with at least two slip rings.
By means of the electrically insulating layer, the contact piece support is electrically insulated by at least two contact pieces, wherein a mechanical connection is nonetheless enabled. As a result, the contact piece support can fulfill its support function with regard to at least two contact pieces. Furthermore, this enables several electrical phases, for example, the three phases for the transmission of three-phase current, to be transmitted to a rotation body with several slip rings and the apparatus according to the invention to be used with a highly compact contact piece support in the process. The electrical energy can be transmitted from the
AH26(13433455 2):JBL
PCT/EP2014/066452 / 2013P10356WO 4
Through the arrangement of a freely moving brush holder support, form and concentricity errors in the rotation body and in particular, the respective slip ring, can be compensated for. The contact piece support thus rotates electrically insulated from the slip ring surface and enables form and concentricity errors and crowning of the slip ring tread to be offset. A concept of the present invention is the arrangement of the contact piece support in relation to the respective slip ring, wherein the arrangement is such that compensation of relative movements in virtually all directions, for example, eccentricities and oblique positions, is possible and reliable operation of the machine is ensured. By mounting the brush holder on the slip ring the production costs of the slip ring and the brush holder support can be reduced. Furthermore, the assembly of brush holder supports and large-diameter slip rings is significantly simplified.
In an advantageous embodiment of the invention, the contact piece support is connected to the respective contact piece by means of a respective elastic element.
The coupling can enable deflection and a corresponding restoring force in a radial direction, in an axial direction and/or in a circumferential direction by means of the respective elastic element. The respective elastic element may, for example, be designed as a spring or as a joint suspension. For example, in the case of a respective elastic element with radial deflection, the special tolerance of the apparatus of eccentricities of the rotation body and/or the respective slip ring, that is, deviations with regard to concentricity, is
PCT/EP2014/066452 / 2013P10356WO 5 ensured. A respective elastic element with deflection in an axial direction and/or in a circumferential direction enables a certain tilting of at least two contact pieces towards each other, wherein such tilting may occur, for example, in deviations relating to axial run-out. The tilting is to be interpreted as meaning that one of the contact pieces continues to face in a circumferential direction relative to another contact piece.
Such deviations may, in particular in the case of rotation bodies for powerful electrical machinery, for example, with outputs exceeding 1 MW, assume considerable proportions because such machines or their slip rings often have diameters significantly in excess of 1 m, in particular in excess of 3 m. Therefore, deviations in the per thousand range of the actual rotation body from the required shape can lead to deviations of several millimeters, which may greatly impair the reliability of the electrical contact of the respective contact piece with the respective slip ring. This is also because with such large machines the respective slip ring is composed of slip ring segments and the desired precision cannot always be guaranteed during assembly. The increased tolerance of deviations of the rotation body from its required shape thanks to the respective elastic element therefore plays a major role in increasing the reliability of the apparatus.
In a further advantageous embodiment of the invention, the apparatus has at least one guide element wherein the respective guide element can be arranged such that when mounted in an electrical machine with the rotatably mounted rotation body, the respective guide element is in contact with at least one surface of the rotatably mounted rotation body.
PCT/EP2014/066452 / 2013P10356WO 6
The at least one guide element improves the reliability of the electrical contact between the respective contact piece and the respective slip ring, in particular by serving as a point of reference for the respective contact piece.
For example, excessive contact force of the respective contact piece on the respective slip ring can be avoided by means of at least one guide element. This can be achieved by at least one guide element exerting force on the respective surface which is facing in the same direction as that force with which the contact piece is pressing on the respective slip ring. As particularly with inadequate concentricity excessive contact force of the contact piece on the respective slip ring may lead to the contact piece "bouncing" off the respective slip ring and contact therefore being interrupted, having at least one guide element has an advantageous effect on the reliability of the apparatus. "Bouncing" of the contact piece off the respective slip ring can also be avoided by arranging at least one surface in a plan view of the slip ring behind the slip ring surface. The increased contact force of the contact piece on the respective slip ring can thus be reliably achieved by means of at least one guide element.
At least one surface of the rotation body may be, for example, a surface of the respective slip ring, the respective guide element thus being in contact with the respective slip ring. In this context, it can be provided that the respective guide element is directly fastened to the contact piece, as a result of which on the one hand particularly good control of the contact piece on the respective slip ring is achieved and on the other hand, the respective guide element is electrically
PCT/EP2014/066452 / 2013P10356WO 7 insulated in relation to the contact piece support.
The respective guide element may, for example, be designed as an element of a sliding guide, in particular of a rail guide, or as an element of a rolling guide, in particular as a guide roller rolling on the rotation body. Defects of the axial runout of the respective slip ring and/or of the support structure are offset by the contact piece and/or contact piece support rolling over the respective slip ring. Furthermore, with this arrangement not only radial, but also axial contact surfaces may be used for a slip ring.
In a further advantageous embodiment of the invention two respective guide elements can be arranged such that when installed in an electrical machine with the rotatably mounted rotation body, the respective surface is arranged between the two guide elements.
This means that the two respective guide elements are arranged in a line, wherein the respective surfaces are on this line and are framed by the two respective guide elements. By means of one of the two guide elements, for example, excessive contact force of the respective contact piece on the respective slip ring may be avoided by one guide element exerting force on the associated surface which is facing in the same direction as that force with which the contact piece is pressing on the respective slip ring. One guide element thus prevents the contact piece "bouncing" off the respective slip ring, as aforementioned. The second of the two guide elements is arranged opposite accordingly, the associated surface thus being arranged on the slip ring behind the slip ring surface in a plan view. Increased contact force of the contact piece on the respective slip ring can thus be reliably achieved by the
PCT/EP2014/066452 / 2013P10356WO 8 second of the two guide elements.
The two respective guide elements therefore ensure the high degree of reliability of the electrical contact between the respective contact piece and the respective slip ring.
In a further advantageous embodiment of the invention the apparatus has a supporting element and an additional elastic element wherein the supporting element is mechanically connected to the contact piece support via the additional elastic element.
The contact piece support is thus held with at least two contact pieces by the supporting element, to which end the supporting element is fastened, for example, to a fixed point of reference of the electrical machine. As the contact piece support is therefore elastically supported itself, form and concentricity errors and crowning of the slip ring tread can be offset particularly well. This is achieved by means of the additional elastic element which, for example, permits deflection in the same direction as the spring element of the respective contact piece, enabling particularly great deflection of the respective contact piece. By means of the elastic connection of the supporting element to the contact piece support, a reliable contact can also be guaranteed with possible tilting of at least two contact pieces.
In a further advantageous embodiment of the invention at least one of the contact pieces can be arranged in a radial direction offset from the respective slip ring.
This can be achieved by the respective slip ring having a contact surface which faces outwards or inwards radially, and
PCT/EP2014/066452 / 2013P10356WO 9 the respective contact piece being in contact with the contact surface of the slip ring in a radial direction. It is also conceivable that several or all of the contact pieces of the apparatus are arranged in a radial direction offset from the respective slip ring.
In a further advantageous embodiment of the invention at least one of the contact pieces can be arranged in an axial direction offset from the respective slip ring.
This can be achieved by the respective slip ring having a contact surface which faces in an axial direction and the respective contact piece being in contact with the contact surface of the slip ring in an axial direction. It is also conceivable that several or all of the contact pieces of the apparatus are arranged in an axial direction offset from the respective slip ring.
In addition, a combination of contact pieces offset in a radial direction and in an axial direction is possible in relation to the respective slip ring.
In a further advantageous embodiment of the invention at least one additional electrically insulating layer is arranged between the respective surface and at least two slip rings.
As a result of the respective guide element not being directly supported on the respective slip ring, the respective slip ring is not subject to damage and/or excessive wear and this increases the service life of the respective slip ring. In particular, if the respective guide element is directly fastened to the contact piece support, at least one additional electrically insulating layer ensures that the voltage of the
PCT/EP2014/066452 / 2013P10356WO 10 respective slip ring is only transmitted to the smallest possible number of parts. In particular, no additional electrical insulation is required for the apparatus between the respective guide element and the contact piece support.
In a further advantageous embodiment of the invention, the electrical machine is designed as a wind-power generator, ring motor, mill drive or compressor drive. The electrical machine preferably has an output in excess of 1 MW, in particular in excess of 15 MW.
The present invention can be used to particular advantage with low-speed electrical machinery with electrical slip ring excitation and large diameters, in particular greater than 1 m or greater than 3 m, such as, for example, drives of wind turbines, tube mills or compressors.
The invention is explained in more detail hereinafter with reference to the exemplary embodiments shown in the diagrams. The diagrams show: FIG 1 a first exemplary embodiment of the apparatus according to the invention and a rotatably mounted rotation body and FIG 2-6 the exemplary embodiments 2-6 of the apparatus according to the invention.
Figure 1 shows a first exemplary embodiment of the apparatus according to the invention and a rotatably mounted rotation body 10. The apparatus has a contact piece support 1 with two contact pieces 2, wherein an electrically insulating layer 3 is arranged between the contact piece support 1 and the respective contact piece 2. The rotation body 10 has two slip rings 11,
PCT/EP2014/066452 / 2013P10356WO 11 wherein the apparatus ensures the reliable electrical contact of the respective contact piece 2 with the respective slip ring 11.
The rotation body 11 can be rotated around the rotational axis 20 so that the contact pieces 2 are arranged in a radial direction offset from the respective slip ring 11. Alternatively, the rotation body 11 can be rotated around the rotational axis 21, wherein the two contact pieces 2 are thus arranged in an axial direction offset from the respective slip ring 11.
The two alternative rotational axes 20 and 21 are also shown in the additional exemplary embodiments in order to clarify that a respective contact piece 2 may be arranged in a radial and/or axial direction offset from the respective slip ring 11. In principle, it is also conceivable for a contact piece 2 to be offset in a radial direction and an additional contact piece 2 to be offset in an axial direction from the respective slip ring 11.
Figure 2 shows a second exemplary embodiment. As a supplement to the first exemplary embodiment, in accordance with the second exemplary embodiment the two contact pieces 2 of the apparatus have two brushes 9 respectively, which are each held elastically by means of spring elements 8.
Furthermore, the apparatus has two guide elements 5 which are fastened respectively to one of the contact pieces 2 and are in contact with a respective surface 12. The respective surface 12 is a surface of the respective slip ring 11, which is part of the rotation body 10. The two guide elements 5 can be designed as guide rollers which roll over the respective surface 12.
PCT/EP2014/066452 / 2013P10356WO 12
Furthermore, the rotation body 10 has an insulating layer 23 which electrically insulates the two slip rings 11 from each other .
Figure 3 shows a third exemplary embodiment. The third exemplary embodiment, like the second exemplary embodiment, has brushes 9 which are elastically linked respectively to the respective contact piece 2 by means of a spring element 8 and then to the contact piece support 1. In the context of this exemplary embodiment, one brush 9 is provided for each contact piece 2.
Furthermore, the apparatus has two guide elements 5 which are connected respectively to one of the contact pieces 2 and are in contact with a surface 12 of the rotation body 10. An additional electrically insulating layer 13 is arranged between the respective surface 12 and the two slip rings 11.
Figure 4 shows a fourth exemplary embodiment. The fourth exemplary embodiment is similar to the third exemplary embodiment but differs in the design of the guide element 5.
Now a guide element 5 is provided which is connected to the contact piece support 1 and is supported on one surface 12 of the rotation body 10. A further electrically insulating layer 13 is in turn arranged between the surface 12 and the two slip rings 11.
Figure 5 shows a fifth exemplary embodiment. The apparatus has a contact piece support 1 to which three contact pieces 2 are attached. The respective contact piece 2 is electrically insulated from the contact piece support 1 by a respective electrically insulating layer 3 and elastically connected
PCT/EP2014/066452 / 2013P10356WO 13 respectively to the contact piece support 1 by means of an elastic element 4. The elastic element 4 may, for example, be embodied as a spring or joint suspension.
The elastic elements 4 shown on the right and left in Figure 5 may in particular enable a radial and an axial deflection of the associated contact piece 2, which ensures a good electrical contact between the respective contact piece 2 and the respective slip ring 11, even with greater eccentricities of the associated slip ring 11. The elastic element 4 shown in the center in Figure 5 for rotation of the rotation body 10 around the rotational axis 20 can enable radial deflection of the associated contact piece 2. For alternative rotation of the rotation body 10 around the rotational axis 21, axial deflection of the associated contact piece 2 is accordingly enabled by this elastic element 4.
Furthermore, the apparatus has four guide elements 5 which are arranged in pairs and are connected to the contact piece support 1. A respective bracket 24, which is part of the rotation body 10 and holds one of the respective slip rings 11, engages in a respective pair of guide elements 5. The respective guide element 5 is supported on a surface 12 of the bracket 24. A pair of guide elements 5 is arranged along a line, wherein the associated surfaces 12 are arranged between this pair of guide elements 5. This line is parallel to a contact force of the associated brushes 9 on the associated slip ring 11, thus ensuring particularly reliable contact between the brushes 9 and the slip ring 11 by means of the respective pair of guide elements 5.
Figure 6 shows a sixth exemplary embodiment. The sixth exemplary embodiment is similar to the second exemplary
PCT/EP2014/066452 / 2013P10356WO 14 embodiment but also has a supporting element 6 to which a further elastic element 7 of the contact piece support 1 is elastically connected. Through this mounting of the contact piece support 1 and thus of the respective contact pieces 2, great eccentricities of the respective slip ring 11 and tilting of the contact pieces 2 can also be offset.
In short, the invention relates to an apparatus for transmitting an electric current to a rotatably mounted rotation body which comprises at least two slip rings with a contact piece support and at least two contact pieces, wherein the contact piece support is mechanically connected to the respective contact piece, wherein the respective contact piece can be arranged such that when mounted in an electrical machine with the rotatably mounted rotation body, the respective contact piece is in contact with the respective slip ring. Furthermore, the invention relates to an electrical machine with such an apparatus and such a rotation body. In order to develop the apparatus to the effect that at least two electrical phases can be transmitted to the rotation body with a high degree of reliability, it is proposed that an electrically insulating layer is arranged between the contact piece support and the respective contact piece.

Claims (8)

1. An apparatus for transmitting an electric current to a rotatably mounted rotation body which comprises at least two slip rings with - a contact piece support and - at least two contact pieces, wherein the contact piece support is mechanically connected to the respective contact piece, wherein the respective contact piece can be arranged such that when mounted in an electrical machine with the rotatably mounted rotation body, the respective contact piece is in contact with the respective slip ring, wherein an electrically insulating layer is arranged between the contact piece support and the respective contact piece, wherein the apparatus has at least one guide element, wherein the respective guide element can be arranged such that when mounted in an electrical machine with the rotatably mounted rotation body, the respective guide element is in contact with at least one surface of the rotatably mounted rotation body, wherein two respective guide elements can be arranged such that when mounted in an electrical machine with the rotatably mounted rotation body, the respective surface is arranged between the two guide elements.
2. The apparatus as claimed in claim 1, wherein the contact piece support is connected to the respective contact piece by means of a respective elastic element.
3. The apparatus as claimed in any one of the preceding claims, wherein the apparatus has at least one supporting element and an additional elastic element, wherein the supporting element is mechanically connected to the contact piece support via the additional elastic element.
4. The apparatus as claimed in any one of the preceding claims, wherein at least one of the contact pieces can be arranged in a radial direction offset from the respective slip ring.
5. The apparatus as claimed in any one of the preceding claims, wherein at least one of the contact pieces can be arranged in an axial direction offset from the respective slip ring.
6. An electrical machine with - an apparatus as claimed in any one of the preceding claims, - a rotatably mounted rotation body with at least two slip rings.
7. The electrical machine as claimed in claim 6, wherein at least one additional electrically insulating layer is arranged between the respective surface and at least two slip rings.
8. The electrical machine as claimed in claim 6 or 7, wherein the electrical machine is a wind-power generator, ring motor, mill drive or compressor drive.
AU2014304638A 2013-08-07 2014-07-31 Apparatus for transmitting an electric current to a rotatably mounted rotation body Active AU2014304638B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP13179607.0A EP2835879A1 (en) 2013-08-07 2013-08-07 Device for transmitting an electric current on a rotatably mounted rotating body
EP13179607.0 2013-08-07
PCT/EP2014/066452 WO2015018723A1 (en) 2013-08-07 2014-07-31 Apparatus for transmitting an electric current to a rotatably mounted rotation body

Publications (2)

Publication Number Publication Date
AU2014304638A1 AU2014304638A1 (en) 2016-02-25
AU2014304638B2 true AU2014304638B2 (en) 2017-08-31

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AU2014304638A Active AU2014304638B2 (en) 2013-08-07 2014-07-31 Apparatus for transmitting an electric current to a rotatably mounted rotation body

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EP (1) EP2835879A1 (en)
AU (1) AU2014304638B2 (en)
CA (1) CA2920557C (en)
CL (1) CL2016000306A1 (en)
DE (1) DE112014003638A5 (en)
PE (1) PE20160348A1 (en)
RU (1) RU2643357C2 (en)
WO (1) WO2015018723A1 (en)
ZA (1) ZA201600826B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB697637A (en) * 1951-03-09 1953-09-23 Parsons & Marine Eng Turbine Improvements in or relating to electric slip ring and brush gear
EP1273087A1 (en) * 2000-12-21 2003-01-08 Valeo Equipements Electriques Moteur Electric machine with brush-holder assembly and method for assembling an electric machine provided with such an assembly

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB697673A (en) * 1950-01-03 1953-09-30 Titan Gmbh Process for the production of rutile
RU2193810C2 (en) * 2000-10-11 2002-11-27 Закрытое акционерное общество "Национальная компания Уралтерминалмаш" Multichannel sliding current collector
RU2467451C2 (en) * 2008-05-16 2012-11-20 Шлюмбергер Текнолоджи Б.В. Dc motor switching system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB697637A (en) * 1951-03-09 1953-09-23 Parsons & Marine Eng Turbine Improvements in or relating to electric slip ring and brush gear
EP1273087A1 (en) * 2000-12-21 2003-01-08 Valeo Equipements Electriques Moteur Electric machine with brush-holder assembly and method for assembling an electric machine provided with such an assembly

Also Published As

Publication number Publication date
WO2015018723A1 (en) 2015-02-12
PE20160348A1 (en) 2016-05-11
RU2016107825A (en) 2017-09-14
ZA201600826B (en) 2022-09-28
RU2643357C2 (en) 2018-02-01
DE112014003638A5 (en) 2016-05-12
CL2016000306A1 (en) 2016-08-12
CA2920557A1 (en) 2015-02-12
AU2014304638A1 (en) 2016-02-25
CA2920557C (en) 2018-08-21
EP2835879A1 (en) 2015-02-11

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