US20160084226A1 - Cooling system - Google Patents

Cooling system Download PDF

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Publication number
US20160084226A1
US20160084226A1 US14/888,499 US201314888499A US2016084226A1 US 20160084226 A1 US20160084226 A1 US 20160084226A1 US 201314888499 A US201314888499 A US 201314888499A US 2016084226 A1 US2016084226 A1 US 2016084226A1
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US
United States
Prior art keywords
generator
air
wind turbine
cavity
stator
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.)
Abandoned
Application number
US14/888,499
Other languages
English (en)
Inventor
Uffe Eriksen
Soeren Gundtoft
Thorkil Munk-Hansen
Claus Thygesen
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
Assigned to SIEMENS WIND POWER A/S reassignment SIEMENS WIND POWER A/S ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ERIKSEN, UFFE, Munk-Hansen, Thorkil, Thygesen, Claus, GUNDTOFT, SOEREN
Assigned to SIEMENS AKTIENGESELLSCHAFT reassignment SIEMENS AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SIEMENS WIND POWER A/S
Publication of US20160084226A1 publication Critical patent/US20160084226A1/en
Abandoned legal-status Critical Current

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Classifications

    • F03D9/002—
    • 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
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • 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
    • F03D15/00—Transmission of mechanical power
    • F03D15/20—Gearless transmission, i.e. direct-drive
    • 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
    • F03D80/80—Arrangement of components within nacelles or towers
    • 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
    • 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
    • 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
    • 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
    • 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
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/60—Fluid transfer
    • F05B2260/64—Aeration, ventilation, dehumidification or moisture removal of closed spaces
    • 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 following relates to a wind turbine generator cooling system.
  • a wind turbine comprises a nacelle that is rotatable arranged on top of a tower.
  • a rotor hub that comprises at least one rotor blade is rotatable attached to the nacelle.
  • the rotor hub In a direct driven wind turbine the rotor hub is directly coupled to the rotor of an electrical generator. The rotation of the rotor hub is not transferred by a gear.
  • the electrical generator comprises a stator and a rotor.
  • the stator is attached to the stationary part of the nacelle of the wind turbine.
  • the rotor is arranged rotatable in respect to the stator of the electrical generator.
  • the wind interacts with the rotor blade so that the rotor hub and the rotor of the electrical generator rotate.
  • the generator produces electrical energy. Heat is created in the stator and the rotor of the electrical generator due to eddy currents and losses. This excess heat can become so intense that parts of the generator get damaged. Thus, the generator needs to be cooled.
  • EP 2141360 A2 discloses a wind turbine with a tower and a nacelle with a generator.
  • the generator comprises a stator, a rotor and a fan.
  • the nacelle is divided into a front part and a rear part by the generator, the front part and the rear part of the nacelle are connected by the air gap of the generator, wherein the fan is blowing air from the rear part of the nacelle through the air gap to the front part of the nacelle. The air is sucked in through an opening in the nacelle and is cooling the generator.
  • An aspect relates to providing an improved generator cooling system.
  • a wind turbine generator cooling system for a direct driven wind turbine whereby the electrical generator comprises a stator, a rotor, and an air gap between the stator and the rotor, and the rotor is rotatable in respect to the stator around an axis of rotation.
  • the generator comprises a cavity that is abutting on the stator in a radial direction, whereby a fan is connected to the cavity, so that the fan moves air through the cavity to cool the generator.
  • a duct extends through the cavity in a mainly axial direction from a first side of the generator to a second side of the generator to allow the air that moves through the cavity, that cools the generator, and that collects at least partially at the first side of the generator, to flow from the first side of the generator to the second side of the generator to exit the generator.
  • the wind turbine generator cooling system for a direct driven wind turbine cools the generator of the wind turbine using air as the cooling medium. Air is available in and around a wind turbine to be used as a cooling medium.
  • the generator of the wind turbine comprises a rotor and a stator.
  • An air gap is defined between the rotor and the stator of the electrical generator.
  • the rotor is arranged rotatable in respect to the stator around an axis of rotation.
  • the generator comprises a certain expansion along the axis of rotation, thus a certain axial length.
  • the rotor and the stator have a certain distance from the axis of rotation, thus they have a certain radius.
  • stator and the rotor increase in temperature due to the excess heat.
  • excess heat has to be removed by a cooling system.
  • the generator comprises a cavity.
  • the cavity is directly abutting on the stator, thus it is in direct contact with the stator.
  • the cavity is abutting on the stator in a radial direction.
  • the cavity is abutting radially inward of the stator.
  • the cavity is abutting on the stator radially outward of the stator.
  • the cavity does not interfere with the air gap or the rotor of the generator.
  • a fan is connected to the cavity.
  • the fan moves air through the cavity to cool the generator.
  • the fan moves the air through the cavity either by sucking the air through the cavity or by blowing the air into the cavity.
  • the generator is cooled by the air.
  • the air that moves through the cavity at least partially collects at a first side of the generator.
  • the first side of the generator is at one of the axial ends of the generator.
  • a duct extends through the cavity.
  • the duct leads through the cavity in a mainly axial direction from a first side of the generator to a second side of the generator.
  • the duct allows air to flow from the first side of the generator to the second side of the generator. There the air can exit the generator.
  • the air moves through the cavity, cools the generator, and collects at least partially at the first side of the generator.
  • the warm air that picked up the heat of the generator flows through the duct in the cavity to the other side of the generator without mixing with the air in the cavity, or nearly without increasing the temperature of the air inside the cavity.
  • the air flows through the duct to the second side of the generator and exits the generator there.
  • the fan that moves the air through the cavity, and the air exit of the generator are arranged at the same side of the generator.
  • the closed side of the generator can be used to connect the rotor of the wind turbine to the generator, whereby an interference with connections of the cooling system with the rotor of the wind turbine is avoided.
  • the cavity comprises a first wall to separate the interior of the cavity from a first side of the generator, and a second wall to separate the interior of the cavity from a second side of the generator.
  • the first wall and the second wall define the axial ends of the cavity, and the duct extends through the interior of the cavity from an opening in the first wall of the cavity to an opening in the second wall of the cavity.
  • the ends of the cavity are closed by a wall each.
  • the walls separate the cavity form the first side and from the second side of the generator.
  • the walls define the axial end of the cavity.
  • the first side and the second side of the generator are axial sides of the generator.
  • the first end of the cavity is closed by a wall.
  • the wall comprises an opening.
  • a first end of the duct is connected to the opening in the wall of the first end of the cavity.
  • the second end of the cavity comprises a wall.
  • the wall comprises an opening and the second end of the duct is connected to the opening in the wall of the second end of the cavity.
  • the duct connects the first side of the generator with the second side of the generator in a way that air can flow through the duct from the first side of the generator to the second side of the generator.
  • the air within the duct is separated from the air in the cavity and will not mix with the air in the cavity.
  • the warm air that carries the heat of the generator can be transported through the cavity separated from the cool air in the cavity.
  • connection to an air inlet into the cavity and the connection to allow air to exit the generator are arranged at the same side of the generator.
  • connection is easier to establish and easier to reach by personnel for service purpose.
  • one side of the generator is free of connections of the cooling system.
  • the side free of connection scan be closed by a cover of a housing.
  • one side of the generator protected to prevent, that wind, aerosols and water can enter the generator.
  • the stator of the generator is connected to a stationary part of the wind turbine.
  • the stator is arranged with a certain radial distance to the stationary part.
  • the stator is connected to the stationary part by a wall on each axial side of the stator.
  • the stator, the stationary part, and the walls define a cavity. This cavity is used as the cavity for the cooling system, to move air through the cavity.
  • the stator comprises a plurality of ducts that connect the cavity with the air gap in a way that the air from the cavity flows into the air gap, and along the air gap to the first side and to the second side of the generator.
  • the stator comprises a plurality of ducts that connect the cavity with the air gap in a way that the air present in the cavity can flow through the plurality of ducts into the air gap of the generator.
  • the air is moved by the fan into the cavity and through the plurality of ducts into the air gap of the electrical generator.
  • the air flows along the air gap of the electrical generator and cools the stator and the rotor of the generator.
  • the plurality of ducts in the stator of the generator are openings leading through the lamination package of the stator. These openings can be gaps between stacks of lamination plates of the stator.
  • the excess heat is present in the air gap and in the parts of the rotor and stator adjacent to the air gap.
  • the cool air from the cavity flows along the air gap and cools the stator and the rotor of the electrical generator.
  • excess heat is removed from the generator during the operation of the wind turbine.
  • the cool air from the cavity flows through a plurality of ducts into the air gap.
  • the cooling air enters the air gap in different places.
  • the cooling air is equally distributed in the air gap.
  • the cooling effect within the air gap is quite equalized.
  • the cool air from the cavity is equally distributed in the air gap and thus, the cooling effect along the surface of the rotor and the stator is equalized. Thus, no hot spots along the surface of the rotor and the stator in the generator can develop.
  • the air flows along the air gap in both directions to exit the air gap at the first side and the second side of the generator.
  • the first side and the second side are axial ends of the generator.
  • the warm air carries the excess heat out of the generator into both axial directions towards the sides of the generator.
  • the way of the air moving through the air gap is minimized.
  • the cooling effect of the cooling system is optimized.
  • the air exiting the air gap at the first side of the generator flows through the duct from the first side to the second side of the generator. There the air from the first side meets the air that exits the air gap at the second side of the generator.
  • the duct allows the air to flow back from the first side to the second side so that the air flows following the two directions of the air gap can be combined and can exit the wind turbine together through one exit.
  • the exit used by the warm air to flow out of the wind turbine is problematic in the sense of rain and humidity can enter the wind turbine through the exit when the wind turbine is not in operation. Rain water and humidity are problematic for mechanical and electrical components in the wind turbine. Due to the arrangement described, one exit out of the wind turbine can be avoided.
  • the air flows along the air gap in two axial directions.
  • the air exits the air gap at two axial ends of the generator.
  • the air flows through the winding overhang of the windings of the stator. The winding overhangs produce excess heat during operation and need to be cooled.
  • the rotor is arranged radially outward of the stator and the stator is attached to a main shaft of the wind turbine and the cavity is arranged between the stator and the main shaft.
  • the rotor of the generator is arranged rotatable in respect to the stator outside of the stator.
  • the generator comprises an outer rotor.
  • the stator of the electrical generator is connected to a main shaft.
  • the main shaft is connected to the nacelle of the wind turbine.
  • the stator is arranged radially outward of the main shaft.
  • the stator is connected to the main shaft by two walls, one at each axial end of the stator.
  • a cavity is defined between the stator and the main shaft and the two walls that support the stator in respect to the main shaft.
  • This hollow space between the stator and the main shaft is used as a cavity for the described cooling system.
  • the space between the stator and the main shaft is a part of the cooling system so that air can move through the cavity to cool the generator.
  • the wind turbine comprises a nacelle, and the electrical generator is attached to the nacelle.
  • the nacelle comprises a housing.
  • An air outlet connects the interior of the generator to the exterior of the wind turbine.
  • the air outlet is arranged between the nacelle and the rotor of the generator to allow the warm air from inside the generator to exit the wind turbine.
  • the electrical generator of the wind turbine is attached to the nacelle.
  • the stator of the electrical generator is connected to the stationary part of the wind turbine in the nacelle.
  • the rotor of the electrical generator is connected rotatable in respect to the stator of the generator.
  • the rotor is rotatable in respect to the stationary part of the wind turbine and thus in respect to the housing of the nacelle.
  • a gap is present between the rotor of the generator and the housing of the nacelle to allow the rotation of the rotor.
  • the air outlet is arranged within the gap between the nacelle and the rotor of the generator.
  • the warm air from inside the generator exits the wind turbine through the gap between the generator rotor and the housing of the nacelle.
  • Openings in the housing of the wind turbine are potential entry ports for humidity, rain and particles.
  • the air outlet comprises a sealing.
  • This sealing can be a labyrinth sealing for example.
  • the sealing prevents the entry of humid air and rain into the wind turbine.
  • the area of the gap and the sealing is used to allow the warm air from the generator to exit the wind turbine.
  • Humid air and rain can cause damage due to corrosion in the wind turbine. Humid air and rain is hindered in entering the wind turbine. Thus damage is prevented.
  • An air inlet duct is connected to a fan, and a filter is attached to the air inlet duct so that the air is filtered before it is blown into the cavity.
  • the air is blown by the fan through the air inlet into the cavity.
  • the fan is connected to an air inlet duct and the air inlet duct comprises a filter.
  • the air is filtered before it enters the cavity.
  • the air within the cavity is filtered.
  • the air flowing through the plurality of ducts into the air gap is filtered.
  • the filter is an aerosol filter.
  • Aerosols are particles like pollen, or salt, or dust, or sand for example. Aerosols can cause damage in the generator of the wind turbine due to corrosion and abrasion.
  • the aerosols are filtered from the air before it enters into the cavity and from there into the air gap of the generator. Thus, damages occurring from aerosols particles like pollen, salt, dust, moisture or sand in the air gap of the generator are avoided.
  • the nacelle comprises an air inlet for air to enter the nacelle.
  • the fan moves air from the nacelle into the cavity.
  • air will flow from outside of the wind turbine into the nacelle.
  • an air inlet needs to be provided to allow air to enter the nacelle.
  • the air inlet to the nacelle comprises a dehumidifier and/or a filter for aerosols.
  • Aerosols are particles like salt, or sand, or dust, or pollen for example.
  • Aerosols cause damage in the electrical generator of the wind turbine, by corrosion or abrasion.
  • the air inlet comprises a filter to filter out the aerosols.
  • the amount of salt, sand, dust, moisture or pollen that enters the nacelle together with the air is reduced.
  • the amount of salt, sand, moisture or pollen that enters the cavity and the air gap of the generator is reduced.
  • the dehumidifier removes water from the air. This includes water in the gaseous phase, like humidity, and water in the liquid phase, like mist, fog, or droplets.
  • a dehumidifier removing mist, fog, or droplets of water from the air is also called a demister.
  • the air inlet of the nacelle is arranged in the back wall of the housing of the nacelle.
  • the nacelle of the wind turbine shows a front end and a back end.
  • the rotor of the wind turbine is arranged at the front end of the nacelle.
  • the back end of the nacelle is the end of the nacelle pointing away from the front end of the nacelle.
  • the wind advances towards the nacelle of the wind turbine. It flows through the rotor of the wind turbine and then along the nacelle.
  • the air inlet of the nacelle is arranged at a side of the housing of the nacelle.
  • the air advancing towards the wind turbine flows through the rotor of the wind turbine and then along the sides of the nacelle.
  • the sides of the nacelle do not experience wind pressing against the housing during the operation of the wind turbine. Thus, no air is pushed by the wind into the nacelle of the wind turbine.
  • the air needed for cooling of the generator is sucked through the air inlet at a side of the nacelle.
  • the side of the nacelle comprises a large area that is not used otherwise.
  • the air inlet is arranged at a side of the nacelle without occupying space needed for other installations and components of the wind turbine.
  • the plurality of ducts in the stator is arranged in the lamination plates of the generator.
  • the air for cooling the generator flows through the lamination plates of the generator and thus cools the lamination plates of the generator.
  • the plurality of ducts in the stator are gaps between at least two stacks of lamination plates of the generator.
  • the lamination plates in the generator are arranged in stacks. Spacers are arranged between the stacks of lamination plates.
  • gaps are present between the stacks of lamination plates. These gaps between the stacks of lamination plates can be used as ducts to allow the air from the cavity to flow through the stator of the generator and thus into the air gap of the generator.
  • the cooling system as described above is used for cooling a generator of a wind turbine.
  • FIG. 1 shows a first embodiment of a cooling system of a wind turbine generator
  • FIG. 2 shows a second embodiment of the cooling system
  • FIG. 3 shows a third embodiment of the cooling system
  • FIG. 4 shows an embodiment of an air inlet at the side of the nacelle.
  • FIG. 1 shows a first embodiment of a cooling system of a wind turbine generator.
  • the wind turbine comprises a nacelle 1 and a generator.
  • the generator comprises a rotor 2 and a stator 3 .
  • An air gap 17 is present between the rotor 2 and the stator 3 .
  • the rotor 2 is arranged around the stator 3 of the generator. Thus the rotor 2 is arranged radially outward of the stator 2 .
  • a cavity 4 is abutting on the stator 3 .
  • the cavity is arranged radially inward of the stator 3 between the stator 3 and the main shaft 10 of the wind turbine.
  • the cavity 4 is limited by the stator 3 of the generator at the outer side and by the shaft 10 of the wind turbine at the inner side.
  • the generator comprises a first side 20 and a second side 21 .
  • the cavity 4 is mainly closed by a wall to separate the cavity from the first side 20 and at the second side 21 of the generator.
  • the wall at the first side 20 and the second side 21 is arranged mainly radial and connects the stator 3 and the shaft 10 .
  • a fan 14 blows air into the cavity 4 .
  • the fan 14 is connected to an air channel 15 .
  • the air channel 15 is connected to an air inlet 5 in the wall of the cavity 4 .
  • the air flow 8 goes from the fan 14 through the air channel 15 and the air inlet 5 into the cavity 4 .
  • the air flow 8 is leading from the cavity 4 through ducts 16 in the stator 3 into the air gap 17 between the rotor 2 and the stator 3 .
  • the air flow 8 is going along the air gap 17 into both directions towards the open end of the air gap 17 .
  • the air flow 8 cools the part of the rotor 2 and the stator 3 adjacent to the air gap 17 . At the end of the air gap 17 the air flow 8 flows through the winding overhang 18 and cools the winding overhang 18 .
  • a duct 9 is arranged within the cavity 4 .
  • a first end of the duct 9 is connected to the wall at the first side 20 of the generator.
  • the second end of the duct 9 is connected to the wall at the second side 21 of the generator in a way that air from the first side of the generator flows through the duct 9 to the second side 21 .
  • the duct 9 is used to guide the air flow 8 from one side of the generator to the other side of the generator and to the air outlet 6 .
  • the air outlet 6 is arranged between the rotor 2 of the generator and the housing of the nacelle 1 .
  • the air flow 8 exits the air gap 17 at both sides towards the first side 20 and the second side 21 of the generator.
  • the part of the air flow 8 that leaves the air gap 17 at the first side 21 of the generator flows through the duct 9 towards the second side 21 .
  • the air flow 8 recombines at the second side 21 and is then leaving the wind turbine at the air outlet 6 between the rotor 2 of the generator and the housing of the nacelle 1 .
  • the air is taken from within the nacelle 1 .
  • An aerosol filter 7 is connected to the fan 14 and/or the air channel 15 to filter aerosols like dust, salt, moisture, pollen, or sand form the air.
  • the air in the cavity 4 is kept under a higher pressure then the ambient air, to force the air to flow through the ducts 16 into the air gap 17 .
  • FIG. 2 shows a second embodiment of the cooling system.
  • the air used for cooling the generator is taken from outside of the nacelle 1 .
  • the nacelle 1 comprises an air inlet 13 at the back side 12 of the nacelle 1 .
  • An air channel 15 connect the air inlet 13 with the filter 7 , the fan 14 , and with the air inlet 5 of the cavity 4 .
  • the air flow 8 goes through ducts 16 through the stator into the air gap 17 , from there along the air gap 17 , to the winding overhangs 18 , and to an air outlet 6 between the rotor 2 of the generator and the housing of the nacelle 1 .
  • An aerosol filter 7 is connected to the air inlet 13 and/or the air channel 15 to filter dust, salt, pollen, moisture, or sand form the air.
  • the air outlet 6 comprises a sealing.
  • This sealing can be a labyrinth-sealing for example.
  • the air inside the cooling system is kept at a higher pressure then the air surrounding the wind turbine.
  • the air flow 8 from the inside of the cooling system flows through the sealing and exits the wind turbine.
  • FIG. 3 shows a third embodiment of the cooling system.
  • the nacelle 1 comprises an opening in the back side 12 of the nacelle 1 .
  • the opening is used as an air inlet 13 for the cooling system.
  • the air inlet comprises a dehumidifier 11 that is arranged at the opening in the back side 12 of the nacelle 1 .
  • the air inlet 13 is connected to an air channel 15 .
  • a fan 14 is arranged in the air channel 15 to move the air from outside of the nacelle 1 through the dehumidifier 11 and the air channel 15 .
  • the air flow 8 generated by the fan 14 , is forced through the air inlet 5 into the cavity 4 .
  • An additional filter for example an aerosol filter, for dust, salt, sand, moisture or pollen, can be connected to the air channel 15 .
  • the air pressure in the cavity 4 is kept on a higher level than the pressure of the air surrounding the wind turbine.
  • the cavity 4 is connected by ducts 16 with the air gap 17 , so that the air in the cavity 4 flows through the duct 16 into the air gap 17 .
  • the air gap comprises a first end that is present at the first side 20 of the generator, and the air gap comprises a second end that is present at the second side 21 of the generator.
  • the air flows along the air gap 17 towards both end of the air gap 17 and collects at the first side 20 and the second side 21 .
  • the first side 20 of the generator is connected to the second side 21 by a duct 9 in a way that the air from the first side 20 flows through the duct 9 towards the second side 21 of the generator.
  • the cavits is separated from the first side 20 and the second side 21 of the generator by a wall on each side. The walls connect the stator 3 and the shaft 10 .
  • the first end of the duct 9 is connected to an opening in the wall at the first side 20 of the generator.
  • the second end of the duct 9 is connected to an opening in the wall at the second side 21 of the generator.
  • the duct 9 is arranged between the opening in the wall on the first side 20 and the opening in the wall on the second side 21 so that the duct leads through the cavity 4 .
  • the air flow 8 from the air gap 17 collects at the second side 21 of the generator.
  • An air outlet 6 is arranged between the housing of the nacelle 1 and the rotor 2 of the generator. The air flow exits the wind turbine at the air outlet 6 .
  • FIG. 4 shows an air inlet at the side of the nacelle.
  • FIG. 4 shows a cut through the nacelle 1 of a wind turbine.
  • FIG. 4 shows a view from the back side of the nacelle 1 into the nacelle 1 towards the generator of the wind turbine.
  • the nacelle 1 comprises a side wall 19 .
  • An air inlet is arranged in the side wall 19 of the nacelle 1 .
  • a dehumidifier 11 is arranged at the air inlet.
  • An air channel 15 leads along the inner side of the housing of the nacelle 1 .
  • the air cannel 15 comprises a fan 14 that forces the air through the air inlet 5 into the cavity in the generator of the wind turbine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Wind Motors (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
US14/888,499 2013-05-22 2013-09-12 Cooling system Abandoned US20160084226A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP13168761.8 2013-05-22
EP13168761.8A EP2806542B1 (en) 2013-05-22 2013-05-22 Airflow control arrangement
PCT/EP2013/068943 WO2014187507A1 (en) 2013-05-22 2013-09-12 Cooling system

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US20160084226A1 true US20160084226A1 (en) 2016-03-24

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US14/888,499 Abandoned US20160084226A1 (en) 2013-05-22 2013-09-12 Cooling system
US14/253,893 Active 2035-07-15 US9624908B2 (en) 2013-05-22 2014-04-16 Airflow control arrangement

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US14/253,893 Active 2035-07-15 US9624908B2 (en) 2013-05-22 2014-04-16 Airflow control arrangement

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US (2) US20160084226A1 (ko)
EP (4) EP2806542B1 (ko)
JP (1) JP6478485B2 (ko)
KR (1) KR102175644B1 (ko)
CN (3) CN105210273B (ko)
BR (1) BR102014012259A2 (ko)
DE (1) DE102014208791A1 (ko)
DK (2) DK2806542T3 (ko)
IN (1) IN2014DE00953A (ko)
WO (2) WO2014187507A1 (ko)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150345473A1 (en) * 2012-09-13 2015-12-03 Jaime Miguel Bardia On or off grid vertical axis wind turbine and self contained rapid deployment autonoous battlefield robot recharging & forward operating base horizontal axis wind turbine
US10819170B2 (en) 2016-12-21 2020-10-27 Wobben Properties Gmbh Stator support for a stator of a wind turbine generator, stator,generator, and wind turbine comprising the stator support
US11009011B2 (en) * 2019-04-05 2021-05-18 Siemens Gamesa Renewable Energy Cooling arrangement for a wind turbine
US20220349382A1 (en) * 2021-04-28 2022-11-03 General Electric Renovables Espana, S.L. Back-up power supply for wind turbines

Families Citing this family (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK2795108T3 (en) * 2011-12-21 2018-06-25 Wobben Properties Gmbh Wind turbine Nacelle
DK2662952T3 (en) * 2012-05-11 2015-09-14 Siemens Ag Generator, especially for a wind turbine
EP2806542B1 (en) * 2013-05-22 2016-09-14 Siemens Aktiengesellschaft Airflow control arrangement
EP2902619B1 (en) * 2014-01-29 2018-01-17 Siemens Aktiengesellschaft Cooling arrangement for a direct drive wind turbine
DK2937562T3 (en) 2014-04-25 2017-10-16 Siemens Ag Device for attenuating acoustic noise caused by air cooling of at least one wind turbine component provided with the nacelle of a wind turbine
CN104600886B (zh) * 2015-01-27 2017-01-25 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
EP3054565A1 (en) * 2015-02-06 2016-08-10 Siemens Aktiengesellschaft Cooling arrangement
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
CN104810997B (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密封协同干燥控制方法
FR3042327B1 (fr) * 2015-10-07 2019-08-02 Guillemot Corporation Systeme de refroidissement d'un moteur electrique
DE102015015338A1 (de) * 2015-11-26 2017-06-01 Munters Euroform Gmbh Windkraftanlage, Gondel und Kühleinrichtung für eine Windkraftanlage
DE102015122855A1 (de) * 2015-12-28 2017-06-29 Wobben Properties Gmbh Windenergieanlage und Kühlvorrichtung für eine Windenergieanlage
CN105736258B (zh) * 2016-03-02 2019-05-03 新疆金风科技股份有限公司 一种流体输运装置及多相流分离装置
CN105553182B (zh) * 2016-03-02 2018-09-14 新疆金风科技股份有限公司 一种风力发电机系统及流体输运装置
GB2558171A (en) * 2016-03-18 2018-07-11 Cummins Generator Technologies Adaptor with improved airflow
CN106014882A (zh) * 2016-06-03 2016-10-12 国电联合动力技术有限公司 一种风电机组的冷却方法及冷却系统
DE102016111332B3 (de) * 2016-06-21 2017-06-29 Aerodyn Engineering Gmbh Modular aufgebaute Windenergieanlage
EP3270491A1 (en) * 2016-07-15 2018-01-17 Siemens Aktiengesellschaft Cooling arrangement of a wind turbine generator
EP3273578B1 (en) * 2016-07-21 2020-06-03 Siemens Aktiengesellschaft Cooling arrangement of a wind turbine generator
DK3279469T3 (da) 2016-08-05 2020-05-25 Siemens Gamesa Renewable Energy As Vindmølle med forbedret køling af generatoren og fremgangsmåde til køling af generatoren af en vindmølle
US20180038351A1 (en) * 2016-08-05 2018-02-08 Siemens Aktiengesellschaft Wind turbine with improved cooling
CN106121940A (zh) * 2016-08-25 2016-11-16 优利康达（天津）科技有限公司 风电机舱温度调节系统
CN106089603A (zh) * 2016-08-25 2016-11-09 优利康达（天津）科技有限公司 风电机舱通风装置
CN109642553B (zh) * 2016-09-30 2021-02-05 弗兰德有限公司 冷却安装在风力涡轮机的机舱中的发电机的装置及方法
DE102017100134A1 (de) * 2017-01-05 2018-07-05 Wobben Properties Gmbh Windenergieanlage und Verwendung eines Tropfenabscheiders in einem Windenergieanlagenrotor
EP3560080A1 (en) * 2017-02-02 2019-10-30 Siemens Gamesa Renewable Energy A/S Cooling arrangement
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
CN106894955B (zh) * 2017-03-13 2019-01-04 新疆金风科技股份有限公司 风力发电机组的机舱风冷降温系统及风力发电机组
EP3382199B1 (en) * 2017-03-27 2023-12-20 Siemens Gamesa Renewable Energy A/S Nacelle for a wind turbine including a cooling circuit
DE102017107897A1 (de) * 2017-04-12 2018-10-18 Wobben Properties Gmbh Verfahren zum Kühlen einer getriebelosen Windenergieanlage
CN107605666B (zh) * 2017-09-11 2019-01-11 北京金风科创风电设备有限公司 具有抑制涡激振动功能的围护结构及抑制涡激振动的方法
EP3477101B1 (en) * 2017-10-25 2020-06-03 Siemens Gamesa Renewable Energy A/S Wind turbine with a nacelle including a water draining device
EP3482815B1 (en) 2017-11-08 2020-06-17 Siemens Gamesa Renewable Energy A/S Operating a wind turbine generator cooling system
CN108019324B (zh) 2017-12-06 2019-07-09 北京金风科创风电设备有限公司 轴系的冷却系统及其控制方法以及风力发电机组
EP3508720B1 (en) * 2018-01-09 2020-06-17 Siemens Gamesa Renewable Energy A/S Wind turbine including a cooling circuit
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CN108843524B (zh) * 2018-06-22 2020-04-10 北京金风科创风电设备有限公司 用于风力发电机组的散热系统及风力发电机组
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DE102019117893B4 (de) * 2019-07-03 2021-10-07 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Antriebsstrang für ein Kraftfahrzeug mit einer direktgekühlten elektrischen Maschine und einem Getriebe, Kraftfahrzeug
CN110318958B (zh) * 2019-07-17 2022-02-08 上海电气风电集团股份有限公司 直驱发电机主轴承机构的冷却系统及直驱发电机
KR102390066B1 (ko) * 2020-09-21 2022-04-25 유니슨 주식회사 풍력터빈용 발전기
DE102021101937A1 (de) * 2021-01-28 2022-07-28 Rolls-Royce Deutschland Ltd & Co Kg Elektrische Maschine und Verfahren zur Reinigung eines Luftspalts in einer elektrischen Maschine
CN112922796B (zh) * 2021-03-02 2021-11-30 中国华能集团清洁能源技术研究院有限公司 一种用于风力发电机组的冷却装置
EP4064555A1 (de) 2021-03-25 2022-09-28 Wobben Properties GmbH Windenergieanlage und verfahren zum steuern einer windenergieanlage
EP4125189A1 (en) * 2021-07-27 2023-02-01 General Electric Renovables España S.L. Cooling of active elements of electrical machines
CN113898542B (zh) * 2021-09-27 2023-04-07 国网浙江省电力有限公司磐安县供电公司 用于风电发电机的散热装置
EP4160009A1 (en) * 2021-10-01 2023-04-05 Siemens Gamesa Renewable Energy A/S Method of controlling a wind turbine
EP4167447A1 (de) * 2021-10-15 2023-04-19 Wobben Properties GmbH Generator und windenergieanlage
EP4167449A1 (de) * 2021-10-15 2023-04-19 Wobben Properties GmbH Generator und windenergieanlage
EP4167448A1 (de) * 2021-10-15 2023-04-19 Wobben Properties GmbH Generator und windenergieanlage
EP4234929A1 (en) * 2022-02-25 2023-08-30 Siemens Gamesa Renewable Energy A/S Method of controlling a wind turbine
US11829214B2 (en) * 2022-04-06 2023-11-28 Microsoft Technology Licensing, Llc Device cooling

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100102655A1 (en) * 2008-10-28 2010-04-29 Uffe Eriksen Arrangement for cooling of an electrical machine
US8047774B2 (en) * 2008-09-11 2011-11-01 General Electric Company System for heating and cooling wind turbine components
US20120156053A1 (en) * 2010-12-20 2012-06-21 Henrik Stiesdal Wind turbine, method of control of a wind turbine and air-conditioning system
US9624908B2 (en) * 2013-05-22 2017-04-18 Siemens Aktiengesellschaft Airflow control arrangement

Family Cites Families (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5714105B2 (ko) * 1973-04-09 1982-03-23
JPS5865977A (ja) * 1981-10-14 1983-04-19 Hitachi Ltd 風力発電装置の冷却機構
JP3715238B2 (ja) * 1999-07-14 2005-11-09 アロイス・ヴォベン 閉冷却回路を有する風力利用設備
FI108962B (fi) * 1999-08-20 2002-04-30 Nokia Corp Laitekaapin jäähdytysjärjestelmä
NL1013129C2 (nl) 1999-09-24 2001-03-27 Lagerwey Windturbine B V Windmolen.
US6882068B2 (en) * 2002-10-08 2005-04-19 General Electric Company Forced air stator ventilation system and stator ventilation method for superconducting synchronous machine
JP2004301094A (ja) * 2003-03-31 2004-10-28 Ebara Corp 風力発電装置
US20050092384A1 (en) * 2003-10-29 2005-05-05 Superior Air Ducts Semi-flexible air duct
DE102004014876B4 (de) * 2004-03-22 2010-06-10 Mdexx Gmbh Ventilatorummantelung, Ventilator mit einer Ventilatorummantelung und Windenergieanlage mit einem Ventilator
DE102004018758A1 (de) * 2004-04-16 2005-11-03 Klinger, Friedrich, Prof. Dr.-Ing. Turmkopf einer Windenergieanlage
DE102004064007B4 (de) * 2004-09-24 2009-08-20 Aloys Wobben Windenergieanlage mit einer Generatorkühlung
JP2007002773A (ja) * 2005-06-24 2007-01-11 Fuji Heavy Ind Ltd 水平軸風車
DE202006009355U1 (de) * 2006-06-13 2006-09-07 Pfannenberg Gmbh Filterlüfter mit einer Schnellbefestigungseinrichtung
EP2123139B1 (en) * 2007-02-14 2010-08-04 Vestas Wind Systems A/S A system for recirculation of air in a component of a wind turbine
JP4994944B2 (ja) * 2007-05-18 2012-08-08 三菱重工業株式会社 風力発電装置
JP4796039B2 (ja) * 2007-11-22 2011-10-19 三菱重工業株式会社 風力発電装置
ITMI20081122A1 (it) * 2008-06-19 2009-12-20 Rolic Invest Sarl Generatore eolico provvisto di un impianto di raffreddamento
JP5123780B2 (ja) * 2008-07-28 2013-01-23 三菱重工業株式会社 風力発電装置
WO2010022724A2 (en) * 2008-08-28 2010-03-04 Vestas Wind Systems A/S Filtering of debris in wind turbines
KR101021333B1 (ko) * 2008-09-01 2011-03-14 두산중공업 주식회사 풍력터빈의 나셀 냉각 시스템
US7843080B2 (en) * 2009-05-11 2010-11-30 General Electric Company Cooling system and wind turbine incorporating same
ES2377696B1 (es) * 2009-07-06 2013-02-14 Gamesa Innovation & Technology S.L. Sistema de aportación de aire filtrado al interior de un aerogenerador.
US8360715B2 (en) * 2009-07-09 2013-01-29 Mitsubishi Heavy Industries, Ltd. Wind turbine generator
US20110204652A1 (en) * 2009-08-18 2011-08-25 Mitsubishi Heavy Industries, Ltd. Wind power generator
JP5455508B2 (ja) 2009-08-28 2014-03-26 三菱重工業株式会社 風力発電用風車
CN102577044B (zh) * 2009-10-21 2015-04-29 西门子公司 发电机
JP5072994B2 (ja) * 2010-03-17 2012-11-14 三菱重工業株式会社 風力発電装置
JP5511549B2 (ja) * 2010-06-30 2014-06-04 三菱重工業株式会社 風力発電装置
DE102010043435A1 (de) 2010-11-04 2012-05-10 Aloys Wobben Windenergieanlage
ITMI20110376A1 (it) * 2011-03-10 2012-09-11 Wilic Sarl Aerogeneratore raffreddato a fluido
CN202096855U (zh) * 2011-05-25 2012-01-04 国电联合动力技术有限公司 一种海上或近海风力发电机机舱盐雾过滤通风装置
EP2546515B1 (en) * 2011-07-14 2013-09-18 Siemens Aktiengesellschaft Wind turbine cooling arrangement
FI123727B (fi) * 2011-09-01 2013-10-15 Abb Oy Järjestely ja menetelmä sähkökoneen jäähdyttämiseksi
CN102748244A (zh) * 2012-07-13 2012-10-24 国电联合动力技术有限公司 一种海上用风力发电机组通风过滤换热装置及方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8047774B2 (en) * 2008-09-11 2011-11-01 General Electric Company System for heating and cooling wind turbine components
US20100102655A1 (en) * 2008-10-28 2010-04-29 Uffe Eriksen Arrangement for cooling of an electrical machine
US20120156053A1 (en) * 2010-12-20 2012-06-21 Henrik Stiesdal Wind turbine, method of control of a wind turbine and air-conditioning system
US9624908B2 (en) * 2013-05-22 2017-04-18 Siemens Aktiengesellschaft Airflow control arrangement

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150345473A1 (en) * 2012-09-13 2015-12-03 Jaime Miguel Bardia On or off grid vertical axis wind turbine and self contained rapid deployment autonoous battlefield robot recharging & forward operating base horizontal axis wind turbine
US9528498B2 (en) * 2012-09-13 2016-12-27 Jaime Miguel Bardia On or off grid vertical axis wind turbine and self contained rapid deployment autonoous battlefield robot recharging and forward operating base horizontal axis wind turbine
US10819170B2 (en) 2016-12-21 2020-10-27 Wobben Properties Gmbh Stator support for a stator of a wind turbine generator, stator,generator, and wind turbine comprising the stator support
US11009011B2 (en) * 2019-04-05 2021-05-18 Siemens Gamesa Renewable Energy Cooling arrangement for a wind turbine
US20220349382A1 (en) * 2021-04-28 2022-11-03 General Electric Renovables Espana, S.L. Back-up power supply for wind turbines
US11867158B2 (en) * 2021-04-28 2024-01-09 General Electric Renovables Espana, S.L. Back-up power supply for wind turbines

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KR20140138062A (ko) 2014-12-03
CN105210273B (zh) 2019-07-09
US9624908B2 (en) 2017-04-18
DK2806542T3 (en) 2016-12-19
JP6478485B2 (ja) 2019-03-06
DE102014208791A1 (de) 2014-11-27
EP2806542A1 (en) 2014-11-26
BR102014012259A2 (pt) 2015-05-26
EP2976829B1 (en) 2017-01-18
EP2806543A1 (en) 2014-11-26
EP2981714A1 (en) 2016-02-10
CN105210273A (zh) 2015-12-30
WO2014187507A1 (en) 2014-11-27
CN104179641B (zh) 2019-08-06
DK2981714T3 (da) 2020-06-02
EP2806542B1 (en) 2016-09-14
CN105229301A (zh) 2016-01-06
CN104179641A (zh) 2014-12-03
EP2981714B1 (en) 2020-04-01
IN2014DE00953A (ko) 2015-06-05
EP2976829A1 (en) 2016-01-27
US20140346781A1 (en) 2014-11-27
JP2014230487A (ja) 2014-12-08
WO2014187577A1 (en) 2014-11-27
KR102175644B1 (ko) 2020-11-09

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