EP3014743A2 - Dispositif de refroidissement pour moteur électrique et moteur électrique comprenant un dispositif de refroidissement - Google Patents

Dispositif de refroidissement pour moteur électrique et moteur électrique comprenant un dispositif de refroidissement

Info

Publication number
EP3014743A2
EP3014743A2 EP14758903.0A EP14758903A EP3014743A2 EP 3014743 A2 EP3014743 A2 EP 3014743A2 EP 14758903 A EP14758903 A EP 14758903A EP 3014743 A2 EP3014743 A2 EP 3014743A2
Authority
EP
European Patent Office
Prior art keywords
stator
channels
cooling device
cooling
stator winding
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Withdrawn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
EP14758903.0A
Other languages
German (de)
English (en)
Inventor
Esteban Grau Sorarrain
Christian Jäkel
Mario Koebe
Matthias Kowalski
Christoph Lehmann
Andrey Mashkin
Olga Plotnikova
Carolin Schild
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
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Priority to EP14758903.0A priority Critical patent/EP3014743A2/fr
Publication of EP3014743A2 publication Critical patent/EP3014743A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors

Definitions

  • Cooling device for an electric machine and electric machine comprising a cooling device
  • the invention relates to a cooling device for electric machines, in particular generators, and electric Ma ⁇ machine with an inventive cooling device.
  • FIG. 3 shows an electrical machine 101 according to the prior art; more precisely, FIG. 3 shows a cross section of a quadrant of an electrical machine.
  • the structure of the electric machine 101 is generally rotationally symmetrical about a rotation axis 5.
  • On the rotation axis 5 is a rotor 4.
  • a stator 2 Concentric or substantially concentric to the rotor 4, a stator 2 is arranged so that upon rotation of the rotation axis 5 a electrical voltage is induced in the stator 2 in the case of a generator.
  • the stator 2 consists of a stator winding or stator winding 2a.
  • the stator winding 2a consists of individual laminated cores 2b (also
  • individual laminations 2b are spaced apart by a distance 2d.
  • Verlus ⁇ th in the conversion of mechanical to electrical energy (and vice versa) heat, which makes it necessary to efficiently cool the electrical machine the one hundred and first Cooling is required because the materials used to insulate the housing from current and / or live parts use insulation materials that retain their insulating effect only up to a limit temperature. If the Grenzwerttemperpaturen exceeded, so is the Isolation is no longer possible, and there is a short circuit and possibly damage to the electric machine 101.
  • a on the rotation axis and / or mounted on the housing fan are used to promote a flow of coolant from outside the electrical machine 101 to the interior of the electric machine and / or in the machine to shift.
  • stator 2 and / or Statorwicklungskopf 2c results in a certain ratio in which the coolant mass ⁇ stream flows to each of these active components and causes a corresponding cooling.
  • This ratio of the individual mass flows of coolant can not be changed for the electric Ma ⁇ machine 101 in general. Since ⁇ by results in a restriction of the cooling of individual active components.
  • the coolant for example gas and / or cooling liquid in the electric machine 101
  • heat which is absorbed by the coolant can be withdrawn by a corresponding radiator through a corresponding thermodynamic cycle and can be supplied to the electric machine 101 again , so that a continuous cooling of the electric machine 101 is possible.
  • the invention has therefore set itself the task of ei ⁇ ne cooling device to provide such that in particular the stator 2 can be selectively cooled.
  • the ahead ⁇ invention proposes an electrical machine having a Cooling device according to the invention for cooling the stator comprises.
  • the cooling device for an electrical machine and in particular a cooling device for an electrical machine with a stator, the stator at least one stator coil with at least one stator core and Minim ⁇ least comprises a stator winding head.
  • the stator is also referred to as a stand, according to the Stän- derwicklungskopf as stator end and the STAs ⁇ rough lech package as a stator lamination.
  • the corresponding terms are to be understood in the following as a synonym.
  • the cooling device comprises a multiplicity of channels through which coolant can flow.
  • the plurality of channels is connected at a first end or end portion to a pressure accumulator.
  • a second end and a second end portion of the plurality of the channels opens out either in a baffle-cooling plate and / or ends in a channel of a stator winding ⁇ head, this function preferably takes the impingement cooling plate.
  • Such a cooling device is before ⁇ geous, as this can be a targeted cooling of the stator set.
  • a selection of the plurality of channels between each of the stator laminations can run.
  • a selection of the plurality of channels in openings within the stator 2 duri ⁇ fen for example, run in channels between each of the stator lamination.
  • the ability to choose which From ⁇ selection of the plurality of channels in channels between each of the stator cores and / or in openings of the stator, particularly the Statorwicklungskopfs passes, can be adjusted to a cooling of individual of the stator winding heads, the relative cooling of each of the stator cores.
  • the first selection of the channels which run between individual stacks of stator cores may be equal to the selection which extends in openings of the stator winding head.
  • Stator head also has a range of channels be from the running between each of the stator laminations plurality of channels.
  • a second selection of the plurality of channels in channels within the stator duri ⁇ fen can be achieved to a single one of the stator end by entspre ⁇ sponding selections of the plurality of channels, a weighting of an individual cooling of the stator cores.
  • the cooling device comprises outlet means.
  • the off ⁇ lassstoff can be provided on the impingement cooling plate.
  • the outlet means may be provided on the at least one channel of the stator winding head by terminating at least a selection of the plurality of channels.
  • the cooling device comprises a coolant, which flows from the pressure accumulator to the second end of the channels, provided there is a lower static pressure at the second end of the channels than in the pressure accumulator.
  • a lower pressure at the second end of the channels is therefore advantageous, since a direction in which the coolant flows is defined so that a flow direction of the coolant can be imparted to a corresponding cooling circuit.
  • the outlet means may be designed so that in the cooling mode, the static pressure at the second end of the channels is less than in the pressure accumulator 10a.
  • a corresponding provision of the outlet means is advantageous, since the desired flow direction of the coolant is achieved in the thermodynamic cycle.
  • sufficient design or dimensioning of the outlet means for example on the impingement cooling plate, effective cooling of the stator results.
  • the impingement cooling plate may be attachable to an end portion of the at least one stator core.
  • the impingement cooling plate may be attachable to an end portion of the at least one stator core.
  • the cooling device may comprise a second plurality of channels through which a coolant can pass, which are connected in a first end or end section to a second pressure accumulator, and at a second end or end section in each case in a second impingement cooling plate and / or in a channel of the second St Swicklungskopfs end.
  • stator winding package can be effectively cooled by the first and second baffle cooling plates.
  • stator winding heads can be effectively cooled by either the second ends of the first channels and / or the second ends of the second channels, each terminating in a channel of the stator winding head.
  • At least one selection can also run for the second channels between individual stator core stacks and / or a selection of the second channels can extend in openings of the stator lamination stack.
  • a second selection of the second channels at least portion ⁇ example in the channels of the Statorwicklungskopfs extend.
  • the second baffle cooling plate ofdevor ⁇ direction at a second end portion of the stator core (also laminated stator core or laminated core) can be attached. Since ⁇ forth can advantageously the stator winding package at the ends ⁇ effectively by means of the first and second baffle cool cooling plate, which allows more efficient heat dissipation.
  • the second pressure accumulator may also contain a coolant which flows from the second pressure accumulator to the second end of the second passage, provided there is a lower static pressure at the second end of the second passage than in the second pressure accumulator.
  • a coolant which flows from the second pressure accumulator to the second end of the second passage, provided there is a lower static pressure at the second end of the second passage than in the second pressure accumulator.
  • the cooling device may take second outlet to ⁇ which are designed so that in the cooling operation of the stati ⁇ specific pressure at the second end of the second channels is smaller than in the second accumulator, as has already been explained for the first outlet.
  • Cooling operation designed so that a measurable cooling of the electric machine takes place by the cooling device. This can be done during operation of the electrical machine and / or at standstill of the electrical machine.
  • the invention relates to an electrical machine.
  • This electric machine comprises a rotor and a stator, wherein the stator comprises at least one stator winding with at least one stator core and at least one stator winding head.
  • the electric machine according to the invention further comprises a described above cooling device according to the present invention.
  • the electrical machine according to the invention may preferably be a generator and / or a motor.
  • FIG. 1 shows a section of the cooling device 1 according to the invention, which is attached to a quadrant of a stator 2,
  • Figure 2 shows a second embodiment of the erfindungsge ⁇ MAESSEN cooling apparatus 1 to a section of a quadrant of a stator 2 of an electrical ma- machine 100, and
  • FIG. 3 shows a section of a quadrant of FIG
  • the stator 1 shows a detail of an electric machine 100, in particular a section of a stator 2, which comprises a cooling device 1 according to the present invention in a first embodiment.
  • the stator 2 consists of a multiplicity of stator laminations 2b (also laminated cores or stator lamination packages) as shown.
  • the individual STAs ⁇ stator lamination packs 2B are arranged so as to extend between these first channels 6a.
  • the first channels 6a are connected at ers ⁇ th ends or first end portions 7a with a Druckspei- rather 10.
  • the first channels with either a baffle 6a ⁇ cooling plate 8 are fluidically connected and / or located in a channel of a Statorwicklungskopfs 2c.
  • the baffle-cooling plate is to be dimensio ⁇ kidney 8, in order to guarantee the reduced pressure at the ending in the impingement cooling plate 8 second ends 7b of the channels 6a.
  • appropriate education can look at the impingement plate be provided let medium (not shown) so that we ⁇ kung full cooling, that is achieved impingement cooling who can ⁇ .
  • Channels 6a of the lower static pressure, that is insbeson ⁇ particular lower than in the pressure accumulator 10 is maintained.
  • suitable outlet means which ensure that coolant flowing out of the second ends 7b can be discharged in sufficient quantity to ensure, in the cooling mode, the lower static pressure at the second ends 7b of the first channels 6a.
  • FIG. 2 shows, by way of example, a cooling device 1 according to a further embodiment of the invention, which is mounted in an electric machine 100, FIG. 2, as already shown in FIG. 1, showing only a section of a quadrant of the electric machine 100, as far as is necessary for the understanding of the invention.
  • cooling device 1 and / or the electric machine 100 according to the invention is required.
  • a plurality of second channels 6b are provided, which start from a second pressure accumulator 10b. First ends 7a of the second channels 6b terminate in the second pressure accumulator 10b.
  • a second end 7b of the second channels 6b terminates in a second baffle cooling plate 8b and / or in a stator winding head 2c.
  • the arrangement of St Swicklungs ⁇ head 2c and / or the first impingement cooling plate 8a, and the second impingement cooling plate 8b is given only by way of example in Figure 2 and is intended to explain the principle of the second embodiment of the invention.
  • the more effective cooling of the laminated stator laminates 2b also results in more effective cooling of the stator. It is inte ⁇ ress at the respective second end portions 7b of the first channels 6 and / or on the respective second end portions 7b of the second channels 6b a lower static pressure provided as in the respective associated first or second pressure vessels 10a, 10b to the Coolant in the interior of the first channels 6a and / or inside the second channels 6b to impose a desired flow direction and thus without further drive means, such as pumps, a flow direction of the thermodynamic cycle process, as used for cooling the stator 2, provide.
  • first and second channels 6a, 6b could be used, respectively with a further pressure vessel (not shown) and possibly egg ner further impact cooling plate (not shown) are connected.
  • a gaseous refrigerant for the embodiments of the invention, either a gaseous refrigerant may be used, for example, air, oxygen and / or hydrogen.
  • Hydrogen would be particularly of pre ⁇ partly due to the high heat capacity and high capacity heat from the laminated stator cores 2b and / or refer to the stator winding heads 2c.
  • safety precautions are required when using hydrogen as a coolant in order to avoid a blast gas explosion. Such safety devices are known in the art, are not required for the understanding of the present invention and are therefore not further explained in connection with the present invention.
  • a liquid as coolant, which flows in first channels 6a and / or second channels 6b and in other channels.
  • a non-conductive FLÜS ⁇ stechnik for example, distilled water.
  • generator oil can also be used.
  • electrically conductive coolants which flow out of the second ends 7b within the stator winding heads 2c, it is necessary to ensure that this coolant does not short circuit between electrically conductive components of the stator winding 2a or of the stator 2 causes. It must also be excluded that a routing ⁇ efficient cooling means causes a short circuit between the stator 2 and / or the rotor, as well as between other electrically conductive components of the electrical machine 1.
  • cooling device 1 has been explained in connection with stator laminations 2b (also stator laminations, stator laminations, stator laminations, or stator), it is conceivable oh ⁇ ne restriction to provide the cooling device 1 on sheet metal packages of the rotor 4.
  • stator laminations 2b also stator laminations, stator laminations, stator laminations, or stator
  • oh ⁇ ne restriction to provide the cooling device 1 on sheet metal packages of the rotor 4.
  • the pressure vessels 10a, 10b would have to be mounted on the rotation axis 5 and co-rotate with the rotation of the rotation axis 5, which makes it difficult to arrange the cooling device 1 on the rotor 4.
  • cooling apparatus 1 described in connection with Figures 1 and 2 can be combined 100 with other cooling devices of an electrical machine to Errei 2c so a required cooling of the stator 2, the rotor 4 and / or the stator winding heads ⁇ chen.
  • the present ⁇ invention (seen in Fig. 3) and an electrical machine 100 with a rotor 4 and a stator 2, wherein the stator comprises at least a stator winding 2 with at least ei ⁇ nem laminated stator core 2b , as shown in Figures 1 and 2, where ⁇ in the electric machine 100, the inventive cooling ⁇ device 1, as explained in connection with Figures 1 and 2, comprises.
  • the electric machine according to the invention may be without limitation a generator and / or a motor.
  • the present invention is not limited to the embodiments of the cooling device 1 and / or the electric machine 100.
  • the invention in detail by the preferred embodiments of thedevorrich- device 1 as well as preferred embodiments of the electrical machine 100 has been illustrated and described, the He ⁇ invention is not disclosed by the examples herein limited. Rather, variations are those disclosed herein Embodiments can be derived by the person skilled in the art without departing from the scope of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

L'invention concerne un dispositif de refroidissement (1) pour un moteur électrique (100) pourvu d'un enroulement de stator (2a) présentant au moins un paquet de tôles (2b), lequel comprend au moins un paquet de tôles (2b) et au moins une tête d'enroulement de stator (2c), le dispositif de refroidissement (1) comprenant une pluralité de canaux (6a) pouvant être traversés par un réfrigérant, lesquels sont reliés par une première extrémité (7a) à un accumulateur de pression (10a) et terminent par leur seconde extrémité (7b) dans une plaque de refroidissement par impact (8a) et/ou dans un canal d'une tête d'enroulement de stator (2c). La présente invention concerne en outre un moteur électrique (100) pourvu d'un rotor (4) et d'un stator (2) comprenant au moins un enroulement de stator (2a) présentant au moins un paquet de tôles (2b) et au moins une tête d'enroulement (2c), le moteur électrique (100) comprenant un dispositif de refroidissement (1) selon l'invention. Le moteur électrique peut être un générateur et/ou un moteur.
EP14758903.0A 2013-09-20 2014-09-03 Dispositif de refroidissement pour moteur électrique et moteur électrique comprenant un dispositif de refroidissement Withdrawn EP3014743A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14758903.0A EP3014743A2 (fr) 2013-09-20 2014-09-03 Dispositif de refroidissement pour moteur électrique et moteur électrique comprenant un dispositif de refroidissement

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP13185286.5A EP2852030A1 (fr) 2013-09-20 2013-09-20 Dispositif de refroidissement pour une machine électrique et machine électrique comprenant un dispositif de refroidissement
PCT/EP2014/068680 WO2015039864A2 (fr) 2013-09-20 2014-09-03 Dispositif de refroidissement pour moteur électrique et moteur électrique comprenant un dispositif de refroidissement
EP14758903.0A EP3014743A2 (fr) 2013-09-20 2014-09-03 Dispositif de refroidissement pour moteur électrique et moteur électrique comprenant un dispositif de refroidissement

Publications (1)

Publication Number Publication Date
EP3014743A2 true EP3014743A2 (fr) 2016-05-04

Family

ID=49230581

Family Applications (2)

Application Number Title Priority Date Filing Date
EP13185286.5A Withdrawn EP2852030A1 (fr) 2013-09-20 2013-09-20 Dispositif de refroidissement pour une machine électrique et machine électrique comprenant un dispositif de refroidissement
EP14758903.0A Withdrawn EP3014743A2 (fr) 2013-09-20 2014-09-03 Dispositif de refroidissement pour moteur électrique et moteur électrique comprenant un dispositif de refroidissement

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP13185286.5A Withdrawn EP2852030A1 (fr) 2013-09-20 2013-09-20 Dispositif de refroidissement pour une machine électrique et machine électrique comprenant un dispositif de refroidissement

Country Status (5)

Country Link
US (1) US20160226325A1 (fr)
EP (2) EP2852030A1 (fr)
JP (1) JP2016530855A (fr)
CN (1) CN105556801A (fr)
WO (1) WO2015039864A2 (fr)

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FR3066053B1 (fr) * 2017-05-03 2019-06-07 Safran Helicopter Engines Machine electrique a materiau a changement de phase d'un demarreur-generateur d'une turbomachine
CN107276275B (zh) * 2017-08-02 2019-09-13 华中科技大学 一种轴向冷却电机
EP3460206A1 (fr) * 2017-09-21 2019-03-27 Siemens Aktiengesellschaft Procédé de fonctionnement d'une turbine à vapeur
DE102017218865A1 (de) 2017-10-23 2019-04-25 Audi Ag Elektrische Maschine und Kraftfahrzeug
CN109385577B (zh) * 2018-05-14 2024-07-02 滨州学院 一种制备永磁材料的工艺及永磁电机
CN109546780B (zh) * 2018-05-14 2023-06-09 滨州学院 一种带有三级冷却的工程车用永磁发电机
CN108736631B (zh) * 2018-06-29 2024-06-04 李忠亮 高功率密度的电机
DE102022117308A1 (de) * 2022-07-12 2024-01-18 Bayerische Motoren Werke Aktiengesellschaft Statorkernkühlungsanordnung für eine elektrische Antriebsmaschine

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Also Published As

Publication number Publication date
EP2852030A1 (fr) 2015-03-25
US20160226325A1 (en) 2016-08-04
WO2015039864A2 (fr) 2015-03-26
CN105556801A (zh) 2016-05-04
WO2015039864A3 (fr) 2015-09-03
JP2016530855A (ja) 2016-09-29

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