EP2491642A2 - Générateur - Google Patents

Générateur

Info

Publication number
EP2491642A2
EP2491642A2 EP10775740A EP10775740A EP2491642A2 EP 2491642 A2 EP2491642 A2 EP 2491642A2 EP 10775740 A EP10775740 A EP 10775740A EP 10775740 A EP10775740 A EP 10775740A EP 2491642 A2 EP2491642 A2 EP 2491642A2
Authority
EP
European Patent Office
Prior art keywords
generator
yoke
air
stator
channel
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Withdrawn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
EP10775740A
Other languages
German (de)
English (en)
Inventor
Frank Seibicke
Joachim Mucha
Jörg WASCHEK
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.)
Siemens AG
Original Assignee
Siemens AG
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 AG filed Critical Siemens AG
Publication of EP2491642A2 publication Critical patent/EP2491642A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/60—Cooling or heating of wind motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H02K7/1823—Rotary generators structurally associated with turbines or similar engines
    • H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
    • H02K7/1838—Generators mounted in a nacelle or similar structure of a horizontal axis wind turbine
    • 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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • 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

Definitions

  • the invention relates to a generator.
  • the cooling of a stator of a generator is based on commercial ⁇ union generators on closed cooling circuits with additional additional coolers (eg air-air or air-water cooler).
  • closed cooling circuits are technically complex and require an additional cooling medium, such. Water. Furthermore, closed cooling circuits of generators, as already mentioned, require recoolers.
  • the generator is designed such that the air is discharged from the exit channel into the surrounding ⁇ ambient air of the generator in the direction of the axis of rotation of the generator, there can be reliably prevented that the warm exhaust air does not prematurely he ⁇ neut is sucked in as air for cooling.
  • the yoke in the circumferential direction of the yoke has extending grooves and the cooling channels are formed by the grooves. In this way, both particularly good cooling of the yoke of the stator can be achieved, and a particularly simple mechanical structure of the stator can be achieved.
  • the generator can e.g. be designed as a wind power generator.
  • FIG. 3 shows a detailed view of FIG. 1
  • FIG. 1 shows a sectional view running along the axis of rotation Z
  • FIG. 2 shows a sectional view running along the axis of rotation Z
  • FIG. 2 shows a sectional view running along the axis of rotation Z
  • FIG 2 shows a sectional view running along the axis of rotation Z
  • FIG 2 shows the corresponding to FIG 1 perpendicular to the rotation axis Z ⁇ right is shown running section, with some elements of the rotor are not shown in FIG 2, for clarity.
  • FIG 1 shows only the elements of the generator 1 essential for understanding the invention are shown in all three figures.
  • the generator 1 which is in the form of a wind power generator in the exemplary embodiment, has a stator 3 which is arranged stationary in relation to the site of the generator and a rotor 2 rotatably arranged about a rotation axis Z of the generator.
  • a stator 3 which is arranged stationary in relation to the site of the generator and a rotor 2 rotatably arranged about a rotation axis Z of the generator.
  • Some elements of the rotor 2 are shown in FIG 1, for the sake of clarity and as for the understanding of the invention immaterial, only highly schematic in the form of two rectangles.
  • the rotor 2 has in the context of the embodiment
  • the rotor 2 comprises the elements of the generator 1 which rotate about the rotation axis Z during operation of the generator 1.
  • the rotor 2 rotates about the rotation axis Z during operation of the generator 1.
  • An air gap 17 is arranged between the rotor 2 and the stator 3. Since, during operation of the generator 1, the rotor 2 rotates about the stator 3 arranged in the center of the generator 1, in the exemplary embodiment the generator 1 is realized as a so-called external rotor.
  • the stator 3 has a yoke 21 as an essential element.
  • the yoke 21 consists in the context of the exemplary embodiment. play from in the direction of the rotation axis Z successively arranged sheets, which together form a so-called laminated core.
  • the individual sheets are thereby provided in the re ⁇ gel with an electrically insulating layer, for example a lacquer layer.
  • the sheets have in the direction of the axis of rotation Z through the sheets extending recesses in which the electrical windings of the stator are arranged.
  • the ends 4 of a winding emerging from the sheets at the longitudinal ends are shown.
  • the yoke 21 is in the context of the invention of a laminated core. But it is also possible that the yoke 21 is composed instead of individual sheets, solid initiallybil ⁇ det and consists of a solid material, such as one or more massive iron workpieces.
  • the stator 3 has two fans 6a and 6b, which have their own electric drive 22a and 22b. Since the fans 6a and 6b do not depend on the rotation of the rotor 2, but each have their own electrical drive (electric motor) assigned to them, such fans are also referred to as so-called external fans in a specific manner.
  • the fans 6a and 6b have an air inlet opening 8a and 8b.
  • the two fans 6a and 6b suck in the operation of the fan air from the ambient air of the generator 1, which is represented by two arrows 7a and 7b in figures. It should be noted at this point that the arrows shown in Figures 1, 2 and 3, the direction of the air flow, which serves to cool the stator represent.
  • the stator 3 has two inlet channels 5a and 5b extending in the direction of the rotation axis Z into which the fans 6a and 6b blow the air drawn in from the ambient air, the fan 6a blowing the air into the inlet channel 5a and the fan 6b blowing the air air into the kitska ⁇ nal 6b blows.
  • the inlet channels 5a and 5b are arranged such that they sucked by the fans air at Joch 21 of the stator 3 on the extending in the direction of the axis of rotation Z length 1 of the yoke 3, at a location associated with the respective inlet channel of the yoke 3, distribute.
  • Cooling channel 16a is provided with a reference numeral.
  • the cooling channels 16a, 16a '16b and. 16b ' shown.
  • the stator 3 circularly curved sheets 11, IIa, IIa ', IIb and IIb' on.
  • stator 3 in the context of the embodiment two in relation to the inlet channels 5a and 5b in the circumferential direction T of the yoke 21 are arranged offset ⁇ outlet channels 20a and 20b.
  • the offset need not necessarily be 90 °, with an angle of 90 ° in the arrangement according to the embodiment, however, ensures that the stator 3 and in particular the yoke 21 is cooled over the entire circumference of the stator 3.
  • the inlet channel 5a is connected via the cooling channels 16 and 16a 'and the inlet channel 5b via the cooling channels 16b and 16b' to the outlet channels 20a and 20b such that the air from the inlet channel 5a through the cooling channels 16a and 16a 'and the air from the inlet channel ⁇ 5b through the cooling channels 16b and 16b' passes into the outlet channels 20a and 20b, which is represented by the entspre ⁇ sponding arrows in Figures 1, 2 and in Fig. 3
  • the air then flows out through channels in the region of the exit 20a and 20b arranged openings 15a and 15b of Sta ⁇ tors 3 and distributed over the circumference of the rotor 2 ⁇ air outlet openings 23 of the generator 1 in the ambient air.
  • the air is discharged from the exit channels 20a and 20b into the ambient air of the generator 1 in the direction of the axis of rotation Z of the generator 1.
  • the shipsaus ⁇ outlet openings 23 are arranged in relation to the air inlet ⁇ opening 8a and 8b in the direction of the axis of rotation Z at gegenü ⁇ overlying end of the generator 1.
  • the arrows 9a and 9b in the figures show the exit of the air from the two outlet channels 20a and 20b.
  • the cooling channels are realized in the form of grooves. So in this way, the yoke 21 with respect to the direction of the rotation axis Z in the circumferential direction T of the yoke 21 extending grooves, wherein the sake of clarity only one groove 16a Darge ⁇ represents in FIG 3.
  • the grooves can be realized, for example, by appropriate training and successive arrangement of the plates of the yoke, during manufacture of the laminated core or be milled eg by means of a corresponding cutter from the finished laminated core. If the yoke is solid and made of a solid material, such as, consists of one or meh ⁇ reren solid iron workpieces, the grooves can be milled out correspondingly by means of a cutter.
  • the cooling channels can also be formed, for example, by pipelines, in particular pipelines, which have a square or rectangular cross-section and are arranged on the yoke in FIG Circumferential direction T of the yoke 21 run and have a heat-conducting contact with the yoke, be realized.
  • the generator has two fans, and, correspondingly, two inlet and two from ⁇ passageways.
  • the generator may also include only a single fan and only a single inlet channel and only a single outlet channel, or it can also be more like two fans and thus also have more like two inlet channels and more like two From ⁇ passageways.
  • the generator according to the invention is used to generate elekt ⁇ -driven energy.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

L'invention concerne un générateur qui comporte un stator monté fixe et un rotor monté rotatif sur un axe de rotation. Le stator comporte un ventilateur qui aspire l'air à partir de l'air dans l'environnement du générateur, le conduit d'entrée étant disposé de manière à répartir l'air aspiré par le ventilateur au niveau de la culasse du stator sur toute la longueur de la culasse, dans la direction de l'axe de rotation. Des conduits de refroidissement sont disposés sur la culasse, s'étendent dans la direction circonférentielle de cette dernière, et sont répartis sur toute sa longueur. Le stator comporte un conduit de sortie décalé par rapport au conduit d'entrée dans la direction circonférentielle de la culasse. Le conduit d'entrée est raccordé au conduit de sortie par les conduits de refroidissement de sorte que l'air s'écoule du conduit d'entrée au conduit de sortie en passant par les conduits de refroidissement. L'invention permet d'obtenir un générateur pour lequel il n'est pas nécessaire d'avoir recours à un milieu de refroidissement supplémentaire pour refroidir le stator du générateur.
EP10775740A 2009-10-21 2010-10-18 Générateur Withdrawn EP2491642A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009045902 2009-10-21
PCT/EP2010/065607 WO2011048038A2 (fr) 2009-10-21 2010-10-18 Générateur

Publications (1)

Publication Number Publication Date
EP2491642A2 true EP2491642A2 (fr) 2012-08-29

Family

ID=43312582

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10775740A Withdrawn EP2491642A2 (fr) 2009-10-21 2010-10-18 Générateur

Country Status (4)

Country Link
US (1) US9106109B2 (fr)
EP (1) EP2491642A2 (fr)
CN (1) CN102577044B (fr)
WO (1) WO2011048038A2 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010000756A1 (de) * 2010-01-08 2011-07-14 Wobben, Aloys, 26607 Windenergieanlage
DK2508749T3 (da) 2011-04-04 2013-12-16 Siemens Ag Fremgangsmåde til montering af en elektrisk maskine
DE102012210614A1 (de) 2012-06-22 2013-12-24 Siemens Aktiengesellschaft Verringerung des elektrischen Widerstandes bei einer elektrischen Maschine mit in Nuten angeordneten Wicklungen
EP2806542B1 (fr) 2013-05-22 2016-09-14 Siemens Aktiengesellschaft Agencement de commande d'écoulement d'air
US10436204B2 (en) * 2014-05-30 2019-10-08 Abb Schweiz Ag Fan assembly for cooling electric machine and electric machine incorporating same
EP3046225A1 (fr) 2015-01-16 2016-07-20 Siemens Aktiengesellschaft Machine électrique rotative avec refroidissement unilatéral et procédé de refroidissement unilatéral
CN104810942B (zh) * 2015-04-15 2017-03-01 新疆金风科技股份有限公司 永磁直驱风力发电机、系统及其定子
EP3086441A1 (fr) * 2015-04-24 2016-10-26 Goodrich Actuation Systems SAS Stator destiné à un moteur à courant alternatif pour un actionneur électromécanique
DE102015120706B4 (de) * 2015-11-30 2018-03-22 Aerodyn Engineering Gmbh Luftgekühlter Öltank
JP6474441B2 (ja) * 2017-03-10 2019-02-27 ファナック株式会社 電動機及び工作機械
US11128201B2 (en) 2017-09-06 2021-09-21 Ge Aviation Systems Llc Method and assembly of a stator sleeve
CN110635589B (zh) * 2018-09-14 2020-12-04 北京金风科创风电设备有限公司 定子组件以及具有该定子组件的电机
EP3719313B1 (fr) * 2019-04-05 2024-06-05 Siemens Gamesa Renewable Energy A/S Agencement de refroidissement pour une éolienne
EP3772160A1 (fr) * 2019-07-31 2021-02-03 General Electric Renovables España S.L. Structure de stator
CN111677632B (zh) * 2020-06-17 2022-02-08 上海电气风电集团股份有限公司 风力发电机及包括其的风力发电机组
CN111677631B (zh) * 2020-06-17 2022-02-08 上海电气风电集团股份有限公司 风力发电机及包括其的风力发电机组

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US5331238A (en) * 1993-03-01 1994-07-19 Sundstrand Corporation Apparatus for containment and cooling of a core within a housing
DE4315280A1 (de) 1993-05-07 1995-01-05 Siemens Ag Elektrische Maschine
FR2721452B1 (fr) * 1994-06-17 1996-09-06 Leroy Somer Moteurs Stator bobiné à encoches pour machine électrique tournante, procédé de réalisation d'un tel stator et machine comprenant un tel stator.
DE19636591C2 (de) 1996-09-10 1999-12-09 Friedrich Klinger Synchrongenerator für einen getriebelosen Windenergiekonverter
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DE10307813B4 (de) 2003-02-24 2006-05-24 Siemens Ag Elektrische Maschine
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DE102007021720B4 (de) 2007-05-09 2014-01-23 Siemens Aktiengesellschaft Verdichtersystem für den Unterwassereinsatz im Offshore-Bereich
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EP2182618B1 (fr) * 2008-10-28 2012-10-17 Siemens Aktiengesellschaft Agencement pour le refroidissement d'une machine électrique
EP2234246B1 (fr) * 2009-03-23 2012-10-31 Abb Oy Arrangement et méthode pour refroidir une machine électrique
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Also Published As

Publication number Publication date
CN102577044B (zh) 2015-04-29
WO2011048038A2 (fr) 2011-04-28
WO2011048038A3 (fr) 2011-12-01
US9106109B2 (en) 2015-08-11
CN102577044A (zh) 2012-07-11
US20120205998A1 (en) 2012-08-16

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