WO2005062432A1 - Ensemble bague collectrice - Google Patents

Ensemble bague collectrice Download PDF

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Publication number
WO2005062432A1
WO2005062432A1 PCT/EP2004/053385 EP2004053385W WO2005062432A1 WO 2005062432 A1 WO2005062432 A1 WO 2005062432A1 EP 2004053385 W EP2004053385 W EP 2004053385W WO 2005062432 A1 WO2005062432 A1 WO 2005062432A1
Authority
WO
WIPO (PCT)
Prior art keywords
slip ring
ring arrangement
current transmission
arrangement according
liquid metal
Prior art date
Application number
PCT/EP2004/053385
Other languages
German (de)
English (en)
Inventor
Lars Lauer
Norman Perner
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2005062432A1 publication Critical patent/WO2005062432A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K31/00—Acyclic motors or generators, i.e. DC machines having drum or disc armatures with continuous current collectors
    • H02K31/04—Acyclic motors or generators, i.e. DC machines having drum or disc armatures with continuous current collectors with at least one liquid-contact collector
    • 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
    • H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
    • H01R39/30—Liquid contacts
    • 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
    • H01R39/64—Devices for uninterrupted current collection
    • H01R39/646—Devices for uninterrupted current collection through an electrical conductive fluid
    • 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
    • H02K13/003—Structural associations of slip-rings
    • 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
    • H01R39/12—Slip-rings using bearing or shaft surface as contact surface

Definitions

  • the invention relates to a slip ring arrangement for an electrical machine with a stator and a rotor, a fixed part with a current transmission surface and a part rotating with respect to this part being provided with a further current transmission surface separated by a gap
  • Slip arrangements serve for the current transmission between the fixed and rotating part of a rotating electrical machine.
  • the magnet wheels and turbo rotor hold two slip rings for direct current transmission.
  • Induction machines with slip ring rotors receive two or three slip rings depending on the type of current.
  • Each ring is provided with a secure electrical connection for the winding of the rotor and is positioned together with the other rings on a support body.
  • the slip rings must be insulated against each other and against the supporting body.
  • the power supply lines must also be securely insulated.
  • Power is essentially transferred via brushes. This leads to brush wear, which also results in electrically conductive dust deposits that get into the engine compartment and can therefore lead to damage. As a result of this brush wear, a regular brush change must also be provided.
  • DE 1 613 118 discloses a dynamoelectric machine with a current collector made of liquid metal, a rotor being provided which has a circumferential current transmission surface and a stator which has a stationary current transmission surface which is from said surface
  • Circumferential current transmission surface is arranged at a predetermined distance, so that a gap is formed, the can be charged with a conductive liquid metal during operation.
  • nozzles are provided in order to circulate the liquid metal.
  • an electrical contact device of a machine in particular a unipolar machine, is known with machine parts which are arranged concentrically to one axis and are movable relative to one another, between which an annular air gap is formed which contains a contact liquid in a contact zone, via an electromagnetic Wanderfeld contact liquid is kept in the contact zone.
  • a disadvantage here is the respective design effort of such a guide device for the liquid metal.
  • the object of the invention is to create a simplified slip ring arrangement which is less maintenance-intensive and also simple and therefore inexpensive to manufacture.
  • the problem is solved in that the liquid metal alloy by capillary action in the gap that rotates between the fixed part with a current transmission surface and a part that rotates relative to this part
  • Part is held with a further current transmission surface, and / or results by means of capillary action through adjustable surface modification of the elements adjacent to the current transmission surfaces, such that the liquid metal alloy is prevented from unintentionally escaping from the gap.
  • the surfaces of the elements adjacent to the current transmission surfaces are annealed, e.g. modified in a vacuum oven so that the wetting properties of the liquid metal alloy according to the invention result from this.
  • Gap that results between the respective current transmission surfaces can also be achieved by coating the surfaces in the region of the gap, especially at the end regions of the elements at the transition to the respective current transmission surfaces, in order to achieve a contact angle which is as unfavorable as possible with respect to the liquid metal alloy.
  • the liquid metal alloy is thus specifically prevented from emerging from the gap between the respective corresponding current transmission surfaces.
  • the surfaces of the coated elements thus also achieve a sealing effect with respect to the gap.
  • the design effort according to the invention eliminates the structural effort to keep the liquid metal alloy permanently in its gap in the area of the opposite current transmission surfaces of the fixed and rotating part.
  • the capillary action or the wetting is advantageously achieved on the side of the elements of the current transmission surfaces facing the liquid metal alloy.
  • materials such as molybdenum are used.
  • wetting can also be done by shaping the current Transmission surfaces can be influenced in a targeted manner, in particular by reducing the width of the respective outer regions of the gap of the current transmission surfaces and / or subjecting them to suitable material treatments.
  • the required seal against leakage of the liquid metal alloy is thus influenced by the chemical composition of the liquid metal alloy, the geometry of the gap between the current transmission surfaces and the nature of the surface material of the elements which also form a gap. Furthermore, the wetting or the capillary action according to the invention can also be achieved by the sum or any combination of these measures.
  • the slip ring arrangement has current transmission surfaces which are arranged axially one behind the other and are electrically isolated from one another. Each sub-arrangement is intended for the transmission of current in each case one phase.
  • the current transmission surfaces assigned to the respective phases are to be galvanically separated from one another by suitable means in order to avoid short circuits.
  • Such a slip ring arrangement is advantageously constructed in a modular manner, a module representing a partial arrangement, a current transmission area or an insulation washer, so that in order to obtain the entire slip ring arrangement, a slip ring arrangement according to the invention is created by axially arranging these modules on a support body.
  • Insulation rings are advantageously used as insulation between the individual current transmission surfaces.
  • heating or cooling the liquid alloy must be provided in order to ensure optimal operation of the slip ring arrangement Afford.
  • adapted heating coils or cooling coils in the liquid alloy or in the adjacent parts can be provided as heating. It is also possible to heat the liquid alloy only temporarily, and as soon as the unusual operating state is no longer present, this heating and / or cooling can be switched off.
  • a circuit of the liquid metal alloy can also be set up, which ensures the current transfer function under the sealing effect according to the invention and thereby fulfills cooling or heating functions.
  • Galium, indium, tin or selenium compounds have proven to be particularly advantageous liquid metal alloys.
  • a particularly simple and maintenance-friendly arrangement results if the slip ring arrangement can be used at ambient pressure.
  • the oxidation effects of the liquid metal that occur can include can be avoided by operating the slip ring arrangement in a protective gas atmosphere.
  • the slip ring arrangement is sealed off from the atmosphere on the basis of magnetically conductive liquids such as, for example, ferrofluids.
  • magnetically conductive liquids such as, for example, ferrofluids.
  • Mechanical seals such as brush seals or radial shaft seals are also suitable for sealing.
  • FIG 3-10 different slip ring arrangements with their respective positioning on an electrical machine.
  • FIG. 1 shows a schematically illustrated slip ring arrangement with fixed, electrically and electrically insulating outer parts.
  • the electrically conductive outer parts 1 are advantageously galvanically separated from one another by insulating washers 4, so that short circuits between the phases of the fixed outer parts 1 are avoided.
  • Rotating inner parts 2 and 5 correspond to the fixed outer parts 1 and 4, so that current can be transmitted between the outer part 1 and the inner part 2 via the liquid metal alloy 3.
  • the current transmitted to the rotating inner parts 2 is, as not shown in detail, passed on to the respective windings of a rotor 7 shown in FIGS. 3 to 10 of an electrical machine (not shown in more detail).
  • the geometry of the gap is determined, among other things, by the surface tension of the liquid metal alloy and the material rial of the surface of the insulating washers 4, 5 the magnitude of the force F which is directed into the interior of the liquid metal alloy 3.
  • Adhesive force FA is the force that acts on the liquid metal alloy 3 from the surface of the insulating discs 4, 5.
  • a cohesive force FK is a cohesive force that acts within the liquid metal alloy 3 between the individual molecules of the liquid metal alloy 3.
  • FIG 3 shows a slip ring arrangement lying outside a rotor 7 without its own bearing using the bearings 6 of the electrical machine.
  • the positioning of the fixed part, that is, the outer parts 1, 4 to the rotating part, that is to say the inner parts 2, 5 of the slip ring arrangement takes place via the tolerance chain of the shaft 8 of the bearing 6 and other components which may be located in between.
  • the slip ring arrangement does not have its own storage.
  • the slip ring arrangement is located outside the rotor 7 with its own hydrodynamic bearing 13.
  • the fixed part is positioned relative to the rotating part of the slip ring arrangement via the hydrodynamic bearing 13.
  • the liquid metal alloy 3 takes on bearing properties and at the same time transfers the electrical current.
  • a torque arm 12 prevents the stationary parts from rotating as well.
  • the storage properties are achieved by suitable structures of the surfaces of the fixed parts and rotating parts.
  • the slip ring arrangement is designed to lie outside the rotor 7 with its own rolling bearing.
  • the fixed parts are positioned relative to the rotating part of the slip ring arrangement via roller bearings 14.
  • the liquid metal alloy 3 transfers the electric current from the fixed part to the rotating part.
  • a torque arm 12 prevents the stationary parts from rotating as well.
  • FIG. 6 shows a slip ring arrangement which is located on the inside of a rotor 7, i.e. is arranged within the bearings of the rotor 7 with its own rolling bearing 14.
  • the fixed part 1 is positioned relative to the rotating part 2 of the slip ring arrangement via the roller bearings 14.
  • the liquid metal alloy 3 transmits the electrical current.
  • a torque arm 12 prevents the fixed part from rotating as well. With this arrangement, the axial length extension of the electrical machine is reduced and, above all, no electrical leads are to be led through a hollow shaft or through special bushings of the bearings 6.
  • 7 shows a slip ring arrangement which is located on the inside of a rotor 7, i.e. is arranged within the bearing points of the rotor 7, without its own bearing using the bearings 6 of the rotor 7. The positioning of the fixed part relative to the rotating part of the slip ring arrangement takes place via the tolerance chain of the shaft 8 of the bearing 6 and possibly other components which may be present , This slip ring arrangement does not have its own storage
  • FIG. 8 shows a slip ring arrangement which is arranged on the inside in the rotor 7 and has its own hydrodynamic bearing.
  • the liquid metal alloy 3 takes over storage properties in an area with very narrow gaps and at the same time transmits the electric current.
  • a torque arm 12 prevents the fixed part 1 from rotating as well. It is advantageous here that no line has to be led through a possible hollow shaft to the rotor 7. In addition, the axial length is reduced compared to the previous arrangements.
  • 9 shows a slip ring arrangement with a seal 15 against atmospheric influences, which can also be used without problems in the previous embodiments of slip ring arrangements according to the invention.
  • the seal 15 can be based on magnetic liquids or other gases. It is crucial that there is no contact between the atmosphere and the liquid metal alloy 3. In the space 16 between the seal and the power transmission there can be a gas or a liquid under excess or negative pressure which does not chemically react with the liquid metal alloy 3. There is also no vacuum in this space 16.
  • FIG. 10 shows a liquid metal transmitter with a seal 15 against the atmosphere and a device against the penetration of foreign bodies.
  • This arrangement which can also be used in the other previous arrangements, shows a seal 15 according to FIG. 9 and also an additional seal 18, which can be designed as a labyrinth seal, brush seal or radial shaft seal.
  • slip ring arrangements described so far are arranged coaxially; they can also be designed according to a disc rotor.
  • slip ring arrangements can be used in all applications of electrical machines with slip ring arrangements, in particular for wind turbines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Motor Or Generator Current Collectors (AREA)

Abstract

L'invention concerne un ensemble bague collectrice pour une machine électrique comprenant un stator et un rotor (7). Selon l'invention, une partie fixe (1) comportant une surface de transfert de courant, et une partie (2) qui effectue un mouvement de rotation par rapport à la partie fixe et qui comporte une autre surface de transfert de courant sont prévues, ces deux parties étant séparées par un interstice qui contient un alliage métallique liquide (3) et qui sert à transférer le courant entre la partie fixe et la partie qui tourne avec le rotor (7). L'alliage métallique liquide (3) est maintenu entre les surfaces de transfert de courant par attraction capillaire de l'interstice.
PCT/EP2004/053385 2003-12-22 2004-12-09 Ensemble bague collectrice WO2005062432A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10360548.7 2003-12-22
DE2003160548 DE10360548A1 (de) 2003-12-22 2003-12-22 Schleifringanordnung

Publications (1)

Publication Number Publication Date
WO2005062432A1 true WO2005062432A1 (fr) 2005-07-07

Family

ID=34683767

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/053385 WO2005062432A1 (fr) 2003-12-22 2004-12-09 Ensemble bague collectrice

Country Status (2)

Country Link
DE (1) DE10360548A1 (fr)
WO (1) WO2005062432A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007036436A1 (fr) * 2005-09-26 2007-04-05 Siemens Aktiengesellschaft Dispositif pour realiser des liaisons par du metal liquide et utilisation de ladite liaison electrique
WO2008077841A1 (fr) * 2006-12-21 2008-07-03 Siemens Aktiengesellschaft Surveillance du caractère passant d'un élément de transmission d'énergie
DE102006028647B4 (de) * 2006-06-22 2009-10-01 Siemens Ag Werkzeug- oder Produktionsmaschine oder Roboter
EP2146403A1 (fr) 2008-07-14 2010-01-20 Siemens Aktiengesellschaft Transmetteur
DE102009018655A1 (de) 2009-04-23 2010-10-28 Siemens Aktiengesellschaft Flüssigmetall-Dreh-Übertrager
DE102009039583A1 (de) 2009-09-01 2011-03-03 Siemens Aktiengesellschaft Flüssigmetall-Dreh-Einrichtung
DE102009038685A1 (de) 2009-08-24 2011-03-10 Siemens Aktiengesellschaft Flüssigmetall-Dreh-Übertrager
EP2498347A1 (fr) 2011-03-08 2012-09-12 Siemens Aktiengesellschaft Transmetteur
CN112959880A (zh) * 2021-03-31 2021-06-15 吉林大学 混动摩托车及其车辆驱动总成
US20220071564A1 (en) * 2020-09-09 2022-03-10 Siemens Healthcare Gmbh Dc motor, couch with dc motor and method for operating a dc motor

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004027534A1 (de) * 2004-06-04 2005-12-29 Siemens Ag Windkraftanlage
DE102005045960A1 (de) * 2005-09-26 2007-04-05 Siemens Ag Elektrische Rotationsmaschine
DE102006011256A1 (de) * 2006-03-10 2007-09-13 Siemens Ag Elektrische Maschine für explosionsgefährdete Bereiche
EP2696449B1 (fr) * 2012-08-06 2015-02-25 Schleifring und Apparatebau GmbH Bague collectrice à unité de chauffage intégrée
DE102015205028A1 (de) * 2014-12-19 2016-06-23 Volkswagen Aktiengesellschaft Elektrische Maschine und Kontaktanordnung dafür

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1635319A (en) * 1922-02-11 1927-07-12 Gill James Francis Electrodynamic power-transmitting mechanism
US3133216A (en) * 1958-07-03 1964-05-12 Sayers James Transmission of electric current between relatively movable conductor members
GB1032237A (en) * 1962-12-07 1966-06-08 Colgate Stirling Auchincloss Improvements relating to structures for mounting between rotary members and surrounding stationary members
DE1613118A1 (de) * 1966-08-29 1970-12-23 Gen Electric Dynamoelektrische Maschine mit einem aus einem fluessigen Metall bestehenden Stromkollektor
GB1266622A (fr) * 1969-08-04 1972-03-15
GB1266621A (fr) * 1969-08-01 1972-03-15
DE2056768A1 (de) * 1970-11-18 1972-05-25 Langdon Th Elektrischer Kontakt
DE2230332A1 (de) * 1972-06-21 1974-01-17 Oskar Von Mossin Kontaktvorrichtung zum uebertragen elektrischer stroeme zwischen relativ zueinander drehbaren leitern
DE2416765A1 (de) * 1974-04-05 1975-10-23 Siemens Ag Elektrische kontakteinrichtung mit einer kontaktfluessigkeit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2832910A (en) * 1956-11-05 1958-04-29 Allis Chalmers Mfg Co Insulation for air gap of unipolar generator
US3870914A (en) * 1971-06-28 1975-03-11 Alan J Walker Current collection means for electric motors
US4047063A (en) * 1974-12-16 1977-09-06 The General Electric Company Limited Liquid metal slip-ring arrangement for a dynamo electric machine
DE7807482U1 (de) * 1978-03-11 1978-09-14 Schmidt, Siegfried, Dipl.-Ing., 2390 Flensburg Elektrischer motor bzw. generator
US5975536A (en) * 1997-09-30 1999-11-02 Rigaku/Usa, Inc. Rotary motion feedthrough with rotating magnet system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1635319A (en) * 1922-02-11 1927-07-12 Gill James Francis Electrodynamic power-transmitting mechanism
US3133216A (en) * 1958-07-03 1964-05-12 Sayers James Transmission of electric current between relatively movable conductor members
GB1032237A (en) * 1962-12-07 1966-06-08 Colgate Stirling Auchincloss Improvements relating to structures for mounting between rotary members and surrounding stationary members
DE1613118A1 (de) * 1966-08-29 1970-12-23 Gen Electric Dynamoelektrische Maschine mit einem aus einem fluessigen Metall bestehenden Stromkollektor
GB1266621A (fr) * 1969-08-01 1972-03-15
GB1266622A (fr) * 1969-08-04 1972-03-15
DE2056768A1 (de) * 1970-11-18 1972-05-25 Langdon Th Elektrischer Kontakt
DE2230332A1 (de) * 1972-06-21 1974-01-17 Oskar Von Mossin Kontaktvorrichtung zum uebertragen elektrischer stroeme zwischen relativ zueinander drehbaren leitern
DE2416765A1 (de) * 1974-04-05 1975-10-23 Siemens Ag Elektrische kontakteinrichtung mit einer kontaktfluessigkeit

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007036436A1 (fr) * 2005-09-26 2007-04-05 Siemens Aktiengesellschaft Dispositif pour realiser des liaisons par du metal liquide et utilisation de ladite liaison electrique
US7997905B2 (en) 2006-06-22 2011-08-16 Siemens Aktiengesellschaft Machine tool or production machine or robot
DE102006028647B4 (de) * 2006-06-22 2009-10-01 Siemens Ag Werkzeug- oder Produktionsmaschine oder Roboter
WO2008077841A1 (fr) * 2006-12-21 2008-07-03 Siemens Aktiengesellschaft Surveillance du caractère passant d'un élément de transmission d'énergie
US8138767B2 (en) 2006-12-21 2012-03-20 Siemens Aktiengesellschaft Transmissivity monitoring of an energy transmission element
EP2146403B1 (fr) * 2008-07-14 2012-04-25 Siemens Aktiengesellschaft Transmetteur
EP2146403A1 (fr) 2008-07-14 2010-01-20 Siemens Aktiengesellschaft Transmetteur
DE102009018655A1 (de) 2009-04-23 2010-10-28 Siemens Aktiengesellschaft Flüssigmetall-Dreh-Übertrager
DE102009038685A1 (de) 2009-08-24 2011-03-10 Siemens Aktiengesellschaft Flüssigmetall-Dreh-Übertrager
DE102009039583A1 (de) 2009-09-01 2011-03-03 Siemens Aktiengesellschaft Flüssigmetall-Dreh-Einrichtung
EP2498347A1 (fr) 2011-03-08 2012-09-12 Siemens Aktiengesellschaft Transmetteur
US20220071564A1 (en) * 2020-09-09 2022-03-10 Siemens Healthcare Gmbh Dc motor, couch with dc motor and method for operating a dc motor
CN114244052A (zh) * 2020-09-09 2022-03-25 西门子医疗有限公司 直流马达、检查床以及用于运行直流马达的方法
CN112959880A (zh) * 2021-03-31 2021-06-15 吉林大学 混动摩托车及其车辆驱动总成
CN112959880B (zh) * 2021-03-31 2022-06-24 吉林大学 混动摩托车及其车辆驱动总成

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