EP3120018A1 - Geräuschreduziertes rotorblatt einer windenergieanlage - Google Patents
Geräuschreduziertes rotorblatt einer windenergieanlageInfo
- Publication number
- EP3120018A1 EP3120018A1 EP15712290.4A EP15712290A EP3120018A1 EP 3120018 A1 EP3120018 A1 EP 3120018A1 EP 15712290 A EP15712290 A EP 15712290A EP 3120018 A1 EP3120018 A1 EP 3120018A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor blade
- closure element
- air flow
- rotor
- profile
- 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- Withdrawn
Links
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims description 2
- 230000000295 complement effect Effects 0.000 description 5
- 239000011152 fibreglass Substances 0.000 description 5
- 230000000153 supplemental effect Effects 0.000 description 5
- 239000006260 foam Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- YAFQFNOUYXZVPZ-UHFFFAOYSA-N liproxstatin-1 Chemical compound ClC1=CC=CC(CNC=2C3(CCNCC3)NC3=CC=CC=C3N=2)=C1 YAFQFNOUYXZVPZ-UHFFFAOYSA-N 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
Classifications
-
- 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
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
-
- 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
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
-
- 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
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0296—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor to prevent, counteract or reduce noise emissions
-
- 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
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05B2240/301—Cross-section characteristics
-
- 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
-
- 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
- F05B2260/96—Preventing, counteracting or reducing vibration or noise
-
- 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 rotor blade of a wind turbine with a rotor, which in particular has a substantially horizontal axis of rotation, wherein the rotor blade has a rotor blade shell with a suction side and a pressure side and extending from a root-side end to a rotor blade tip, wherein the rotor blade also has a profile wherein the profile defines a chord extending from a rotor blade nose to a rotor blade trailing edge.
- the invention further relates to a method for operating a wind energy plant with a rotor, which has at least one rotor blade, wherein the rotor blade has a rotor blade shell.
- Wind turbines in particular axial design, ie. Wind turbines whose rotor has an axis of rotation which is arranged substantially horizontally, usually serve to generate electricity. Due to the relatively fast moving ro- however, it can create a flow noise, so that the wind turbines can only be installed at relatively large distances from residential areas. Also when setting up in the sea, d .h. Offshore, noise reduction plays an increasingly important role in protecting marine fauna.
- WO 201 3/076008 A1 discloses a wind energy plant in which a fluid is introduced into a turbulent air flow at the trailing edge of a rotor blade in order to reduce the noise generated by the rotor blade.
- a rotor blade of a wind turbine with a rotor having in particular a substantially horizontal axis of rotation the rotor blade having a rotor blade shell with a suction side and a pressure side and extending from a root end to a rotor blade tip, wherein the rotor blade also has a profile, wherein the profile defines a chord extending from a rotor blade nose a rotor blade trailing edge, which is further developed in that a closable air flow device is provided, which provides a closure element in the rotor blade shell, wherein for providing a supplemental air flow to a prevailing on the suction side and / or pressure side air flow, the closure element is or is opened.
- the closure element is at least partially elastic. As a result, the closure element without wear or with little wear is often closed and reopened.
- the closure element is designed as a flexible lip.
- the closure element is biased towards the closed state or to the closed position.
- the closure element thus closes the air flow device when no further forces open the closure element.
- the closure element is preferably in the open state as a slot nozzle directed towards the rotor blade trailing edge, a large area of the rotor blade, in particular in the vicinity of the rotor blade tip, can be efficiently operated with reduced noise.
- the closure element is arranged on the suction side of the rotor blade shell. As a result, can be achieved without too much aerodynamic losses a very low-noise operation of the wind turbine.
- the closure element in the closed state conforms to the outside of the profile of the rotor blade, the aerodynamic properties of the rotor blade remain essentially unchanged by the closure element.
- the outside of the closure element preferably assumes the contour of the profile or the outside of the rotor blade shell.
- the air flow device has an air guide channel extending from the root end of the rotor blade in the direction of the rotor blade tip to the height of the closure element, an efficient and aerodynamically favorable supply of a supplementary air flow or a complementary air flow to the closure element is possible.
- the closure element is preferably arranged at a height of between 75% and 95%, in particular between 80% and 95%, in particular between 80% and 90%, of the chord length of the rotor blade nose.
- the closure element is thus arranged in the vicinity of the rotor blade trailing edge.
- turbulent air flow structures change in the region of the trailing edge of the rotor blade.
- larger turbulence bales are destroyed and disintegrate into smaller turbulence bales that are less acoustically relevant.
- the closure element is substantially or arranged completely parallel to the rotor blade trailing edge.
- the height of the opening of the opened closure element is between 0.5% and 3% of the chord line length.
- an adjustment of the level of the supplementary air flow to the voltage applied to the rotor blade boundary layer takes place.
- the boundary layer is at the rear of a turbulent air layer, which rests against the rotor blade shell and is enclosed by the rotor blade shell and a free outside air flow.
- the supplemental air flow has a velocity of from 10% to 15%, in particular 25% to 75%, of the prevailing air flow, turbulent kinetic energy in the boundary layer is reduced. In particular, not so much air is blown out that a boundary layer-caused speed deficit is compensated directly behind the rotor blade. It is preferably provided that the supplementary air flow essentially serves exclusively to reduce turbulence, and thus to reduce the noise pollution.
- the closure element is formed at a predeterminable differential pressure between the pressure within the air supply and outside the rotor blade in the region of the closure element opening.
- the differential pressure may be predetermined so that upon rotation of the rotor at a prescribable speed, the centrifugal force of the air in the air flow device is sufficient to open the closure element.
- the air guide channel is designed to be porous in the region of the closure element towards the closure element and / or at the root end of the rotor blade a flow is provided, it is possible to provide a uniform complementary air flow and / or to clean the additional air flow and / or adjust the amount forth.
- a fan which generates an air flow in the air flow device, wherein in particular a heating device is provided, by means of which a heated air flow is available or is available.
- the fan is preferably provided in the rotor hub of the wind turbine.
- the rotor blade according to the invention preferably has a specially shaped Ausblasschl itz, which can be closed with an at least partially flexible or at least partially elastic closure element.
- an air flow is generated, which is supplied, for example, by compressed air from a compressed air reservoir or a supply which extends from the rotor blade root into the region of the reservoir.
- a supply between the compressed air reservoir and the blow-out slot may be provided.
- the air flowing out of the blow-out slot influences the turbulent boundary layer in the area of the blade edge in such a way that the turbulence-generated pressure fluctuations and thus the radiated trailing edge sound are reduced.
- a slot height of the blow-out slot in the ratio of the chord line length of 0.5% to 3%.
- a position of the Ausblasschl itze from the leading edge or rotor blade nose is measured at 80% to 95% of the chord.
- an outlet angle of 0 ° to -30 °, in particular -1 ° to -1 5 °, relative to the angle of the chord is particularly preferred zugt to produce an air flow or jet, which runs parallel to the profile geometry.
- the blow-out speed of the compressed air at the slot is preferably 10% to 1 50%, in particular 25% to 75%, of the free outflow speed on the blade segment.
- the compressed air can be generated for example with a blower.
- a blower depending on the position of the blow-out slot in the rotor blade, more or less the natural centrifugal force promotes the conveyance of the air. It can also be provided by the centrifugal force, a promotion of the air, so that the blower can be turned off or not even installed.
- an elastic lip for example a rubber lip or a thin and flexible layer of glass fiber reinforced plastic, is preferably provided, which stands out only by the internal pressure and / or the negative pressure on the profile outside and thus the Can release blow-out.
- the elastic lip also serves to protect the fine or sharp edge of the rotor blade shell in the gap area from the weather.
- the closure element may be the lip.
- a wind turbine is provided with a rotor blade as described above.
- the object is further achieved by a method for operating a wind turbine with a rotor having at least one rotor blade, wherein the rotor blade has a rotor blade shell, wherein a closure element of a closable air flow device is opened during operation of the wind turbine from a predetermined speed of the rotor to one on one Pressure side and / or suction side of the rotor blade prevailing air flow to blow out a complementary air flow.
- a slit opens in the rotor blade shell, the supplementary air flow being blown out of the slot in the direction of a rotor blade trailing edge.
- the opening of the closure element occurs automatically from a predefinable pressure difference on the closure element.
- the supplemental air flow is blown out at a blow-off rate corresponding to between 1 0% and 1 50%, in particular 25% and 75%, of the velocity of the air flow velocity prevailing on the exterior of the closure element.
- the supplementary air flow is heated or is, in addition, a rotor blade deicing can be performed or supported.
- a rotor blade drainage can also be supported.
- Fig. 1 shows a schematic profile of a rotor blade according to the invention in a first embodiment
- FIG. 2 is a schematic representation of a section from FIG. 1 ,
- Fig. 3 a schematic representation of a rotor blade according to the invention in plan view
- Fig. 4 shows a schematic representation of a profile of a rotor blade according to the invention in a further embodiment
- Fig. 5 shows a schematic representation of a profile of a further rotor blade according to the invention in a third embodiment
- Fig. 6 is a diagram of the measured switching pressure level over a frequency
- Fig. 7 shows a schematic representation of a rotor blade according to the invention in a top view in a further embodiment
- Fig. 8 is a schematic representation of a profile of the rotor blade according to the invention from FIG. 7 along the section A-A, and
- Fig. 9 is a schematic sectional view of a part from Fig. 8 in an enlarged view.
- Fig. 1 schematically shows a profile 11 of a rotor blade 20 according to the invention, wherein the rotor blade 20 is shown here in a kind of sectional view.
- the profile 1 1 has a rotor blade nose 1 3 and a rotor blade trailing edge 14. Between the rotor blade nose 1 3 and the rotor blade trailing edge 14, a chord or chord, not shown, is defined, which may vary depending on the size of the rotor blade and the position of the profile between a rotor blade root 26 and a rotor blade tip 27.
- the profile 1 1 has a suction side 1 0 and a pressure side 1 2.
- the rotor blade 20 may preferably be made of glass fiber reinforced plastic as usual and have a rotor blade shell 29, which has a corresponding thickness.
- the rotor blade 20 is shown as a solid material.
- rotor blades are to be provided which have a rotor blade shell and are substantially hollow on the inside.
- an air reservoir 18 is provided, that an air flow or a compressed air via the air supply 1 7 leads to a blow-out slot 1 5.
- the blow-out slot 15 is open to the rotor blade interrand 14 and complements the air flow prevailing around the rotor blade or the air flow prevailing there on the suction side 1 0 by a supplementary air flow.
- a VerParkelennent 1 6 is now provided that is preferably designed as a flexible lip or elastic Ver gleichelennent and in particular preferably automatically then opens when the pressure that presses from the inside on the closure element 1 6, is greater than the pressure of externally presses on the closure element.
- the closure element 16, for example, also opens when a negative pressure is applied to the suction side of the rotor blade.
- the closure element 1 6 may be formed so that it opens only at a predetermined differential pressure.
- FIG. 2 once again schematically shows a section of FIG. 1, wherein the area of H interkante 1 4 is shown.
- the closure element 1 6 is shown closed.
- the angle of the closure element 1 6 to the profile of the rotor blade represents the discharge angle.
- An upward or downward opening of the closure element 1 6 indicates a negative angle.
- Preferred is an opening angle of -1 ° to -30 °, in particular from -1 0 ° to -1 5 °.
- the closure element 1 6 fits snugly against the profile 1 1 of the rotor blade, so that when the closure element 1 6 is closed, the aerodynamic properties of the rotor blade 20 or of the profile 1 1 are essentially unaffected.
- the closure element 1 6 may be closed with a corresponding bias and only from a predetermined pressure difference between internal pressure, d .h. in the feeder 1 7, in comparison rise to external pressure.
- a predetermined pressure difference between internal pressure, d .h. in the feeder 1 7, in comparison rise to external pressure By providing an elastic closure element very tight tolerances can be saved.
- the elastic closure element opens from a predefinable speed, which is in the range of the rotational speed, from which power is produced.
- the closure element opens above a starting speed.
- the closure element may for example be a rubber lip.
- the closure element can also be designed as a sealing element.
- Fig. 3 schematically shows a rotor blade 20 in a plan view.
- the rotor blade 20 extends from a rotor blade root 26 to a rotor blade tip 27.
- an air guide 22 is provided, which may be formed for example as a tube and further extends into the region of the rotor blade tip 27.
- the air guide 22 extends to the air reservoir 1 8, which is in operative connection with the blow-out slot 15.
- the Ausblasschlitz 1 5 may be closed by the lip 1 6.
- the lip 16 opens the Ausblasschl itz 1 5 or is part of the Ausblasschl itzes 1 fifth
- the rotor blade 20 has a rotor blade shell 29, for example made of glass fiber reinforced plastic, as is customary. There is also provided a belt which is not shown, and two webs 23 and 24 which connect the rotor blade upper side to the rotor blade lower side and absorb shear forces. It can be seen that the Ausblasschl itz 1 5 is located close to the trailing edge 14 of the rotor blade 20 and in the vicinity of the rotor blade tip 27. In Fig. 1 is the location of the blowout slot 25 relative to the chord line length at 95% measured from the rotor blade nose 1 3. In the Fig.
- Fig. 5 is also schematically a further profile of a rotor blade shown, being provided as a further special feature, a porous tube 28 which makes it possible homogenization of the air flow in the air supply 1 7, so that a very uniform air flow from the blow-out slot 1 5, the in Fig. 5 is closed by the lip 16, with open lip 1 6 can flow.
- Fig. 3 is still schematically a flow sieve 21, by means of which a uniform flow can be achieved and also a flow rate is adjustable. Depending on the intended blower pressure or speed of the rotor blade thus results in a certain amount of air that can be blown out of the blow-out slot 1 5.
- the turbulent structures in the area of the blade trailing edge change, in particular larger turbulence bales are destroyed and decay to smaller, which are acoustically less relevant.
- the fluid flowing around the rotor blade experiences a smoother transition from the solid surface to the free flow.
- Fig. 6 schematically shows a graph of a measured sound pressure level in dB over a frequency in Hz.
- the trailing edge sound measured here lies in a frequency range between 250 Hz and 750 Hz and is representative of test results of a wind tunnel model.
- the reference numeral 32 denotes a trailing edge sound without the blowout according to the invention and the reference numeral 33 the trailing edge sound with the blowout according to the invention. It can be seen in particular that in the range from 250 Hz to 750 Hz, a clear reduction of the sound is achieved by the use of the blowout stop according to the invention.
- the embodiments according to FIGS. 1 and 2 as well as 4 and 5 are preferably wind tunnel models.
- Fig. 7 shows schematically a plan view of a rotor blade according to the invention in a further embodiment. It can be seen that instead of a blow-out slot at the trailing edge of the rotor blade, three blow-out slots 1 5, 1 5 ', 1 5 "are preferably provided glued.
- Fig. 8 shows a schematic sectional view along the section of the line AA from FIG. 1 .
- the suction side 1 0 of the rotor blade is at the bonding sites 42 "and 42"'with the pressure side 1 2 glued.
- a front web 23 and a rear web 24 are shown.
- the air reservoir 1 8 is limited by the rear web 24 and the rotor blade shells of the suction side 1 0 and the pressure side 1 2.
- a flexible foam or a porous material 41 is glued from below onto the rotor blade shell of the suction side 1 0.
- a built-in part 40 is glued into the rotor blade shell, namely at the bonding sites 42 and 42 '.
- the bonding points of the rotor blade shell and the insert 40 are chamfered. In particular, these are each chamfered complementary to one another. This makes possible a very precise fitting.
- the built-in part 40 is preferably a composite component.
- the closure element 1 6 is formed as a thin lip of fiberglass reinforced plastic, which opens at a corresponding pressure difference or predeterminable pressure difference between the inside and the outside of the rotor blade.
- the profile-profiled outside 43 of the insert 40 corresponds to the contour of the profile 1 1 of the rotor blade.
- a rounding 45 is provided inside the fixture. Avoiding sharp edges also avoids overpressure loss.
- the built-in part 40 can also be reinforced exclusively from glass fiber. be made of plastic.
- the closure element 1 6 is formed so that it opens correspondingly wide at the prevailing pressure during operation, for example by -1 5 °, so that a corresponding Ausblaswinkel is given, which ensures that a complementary air flow is blown out parallel to Profile geometry runs.
- Typical values for blow-off speeds from 1 0% to 1 50% of the free outer flow are from 8 m / s to 1 20 m / s.
- a typical volume flow is between 0.25 m 3 / s and 4 m 3 / s per meter.
- exhaust air can also be warmed or warmed.
- exhaust air can be made available from the machine house. This can be used to avoid ice formation.
- the flexible lip or the closure element also serves as protection against weather-related influences.
- the Ausblasschl itz preferably in the outer third of the rotor blade is arranged.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Wind Motors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014205016.2A DE102014205016A1 (de) | 2014-03-18 | 2014-03-18 | Geräuschreduziertes Rotorblatt einer Windenergieanlage |
PCT/EP2015/055400 WO2015140093A1 (de) | 2014-03-18 | 2015-03-16 | Geräuschreduziertes rotorblatt einer windenergieanlage |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3120018A1 true EP3120018A1 (de) | 2017-01-25 |
Family
ID=52779602
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15712290.4A Withdrawn EP3120018A1 (de) | 2014-03-18 | 2015-03-16 | Geräuschreduziertes rotorblatt einer windenergieanlage |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3120018A1 (de) |
DE (1) | DE102014205016A1 (de) |
WO (1) | WO2015140093A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017112742A1 (de) | 2017-06-09 | 2018-12-13 | Wobben Properties Gmbh | Rotorblatt für eine Windenergieanlage und Windenergieanlage |
EP3945208B1 (de) | 2020-07-27 | 2024-05-15 | Wobben Properties GmbH | Rotorblatt für eine windenergieanlage und zugehörige windenergieanlage |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040201220A1 (en) * | 2003-04-10 | 2004-10-14 | Advantek Llc | Advanced aerodynamic control system for a high output wind turbine |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2053240B1 (de) * | 2007-10-22 | 2011-03-30 | Actiflow B.V. | Windenergieanlage mit Grenzschichtsteuerung |
US20110103950A1 (en) * | 2009-11-04 | 2011-05-05 | General Electric Company | System and method for providing a controlled flow of fluid to or from a wind turbine blade surface |
DE102010011275B4 (de) * | 2010-03-13 | 2012-04-26 | Kenersys Gmbh | Rotorblattentwässerung |
US20110211952A1 (en) * | 2011-02-10 | 2011-09-01 | General Electric Company | Rotor blade for wind turbine |
EP2549097A1 (de) * | 2011-07-20 | 2013-01-23 | LM Wind Power A/S | Windturbinenschaufel mit hubregulierenden Mitteln |
IN2014CN04447A (de) | 2011-11-23 | 2015-09-04 | Lm Wp Patent Holding As | |
US8616846B2 (en) * | 2011-12-13 | 2013-12-31 | General Electric Company | Aperture control system for use with a flow control system |
-
2014
- 2014-03-18 DE DE102014205016.2A patent/DE102014205016A1/de not_active Ceased
-
2015
- 2015-03-16 WO PCT/EP2015/055400 patent/WO2015140093A1/de active Application Filing
- 2015-03-16 EP EP15712290.4A patent/EP3120018A1/de not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040201220A1 (en) * | 2003-04-10 | 2004-10-14 | Advantek Llc | Advanced aerodynamic control system for a high output wind turbine |
Non-Patent Citations (1)
Title |
---|
See also references of WO2015140093A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2015140093A1 (de) | 2015-09-24 |
DE102014205016A1 (de) | 2015-09-24 |
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