US20130272892A1 - Noise reducer for rotor blade in wind turbine - Google Patents
Noise reducer for rotor blade in wind turbine Download PDFInfo
- Publication number
- US20130272892A1 US20130272892A1 US13/988,357 US201013988357A US2013272892A1 US 20130272892 A1 US20130272892 A1 US 20130272892A1 US 201013988357 A US201013988357 A US 201013988357A US 2013272892 A1 US2013272892 A1 US 2013272892A1
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- US
- United States
- Prior art keywords
- rotor blade
- mounting plate
- blade assembly
- fastening device
- noise reducer
- 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
Links
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- 230000009467 reduction Effects 0.000 claims abstract description 24
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
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- 239000002131 composite material Substances 0.000 description 1
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- 239000011888 foil Substances 0.000 description 1
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- 239000012811 non-conductive material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
-
- 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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/30—Lightning protection
-
- 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
-
- 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 present disclosure relates in general to wind turbine rotor blades, and more particularly to noise reducers mounted to the rotor blades.
- Wind power is considered one of the cleanest, most environmentally friendly energy sources presently available, and wind turbines have gained increased attention in this regard.
- a modern wind turbine typically includes a tower, generator, gearbox, nacelle, and one or more rotor blades.
- the rotor blades capture kinetic energy of wind using known foil principles.
- the rotor blades transmit the kinetic energy in the form of rotational energy so as to turn a shaft coupling the rotor blades to a gearbox, or if a gearbox is not used, directly to the generator.
- the generator then converts the mechanical energy to electrical energy that may be deployed to a utility grid.
- various components are attached to the rotor blades of wind turbines to perform various functions during operation of the wind turbines. These components may frequently be attached adjacent to the trailing edges of the rotor blades.
- noise reducers may be attached to the trailing edges of the rotor blades to reduce the noise and increase the efficiency associated with the rotor blade.
- Typical prior art noise reducers are mounted directly to a surface of the rotor blade using glue or another suitable adhesive.
- These noise reducers may have a variety of disadvantages.
- the noise reducers are generally mounted to rotor blades during manufacturing before the rotor blades are transported to the wind turbine site. The noise reducers are thus easily susceptible to damage during transportation.
- the adhesives used to mount the noise reducers make replacement of the noise reducers difficult, expensive, and time consuming.
- the noise reducers are particularly vulnerable to damage from lightning strikes. The lightning strikes may additionally damage the rotor blade as a result of contact with the noise reducers.
- an improved noise reducer for a rotor blade would be desired.
- a noise reducer that allows for on-site mounting to a rotor blade would be advantageous.
- a noise reducer that allows for relatively easy, cost-effective, and efficient replacement would be advantageous.
- a noise reducer that reduces the vulnerability of the noise reducer and rotor blade to damage from lightning strikes would be desired.
- a rotor blade assembly for a wind turbine includes a rotor blade having surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a tip and a root.
- the rotor blade assembly further includes a mounting plate and a noise reducer.
- the mounting plate is configured on a surface of the rotor blade.
- the noise reducer includes a base plate and a plurality of noise reduction features.
- the base plate is mounted to the mounting plate.
- the plurality of noise reduction features extend from the base plate.
- a rotor blade assembly for a wind turbine.
- the rotor blade assembly includes a rotor blade having surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a tip and a root, the surfaces further defining a rotor blade interior.
- the rotor blade assembly further includes a lightning protection device, a mounting plate and a noise reducer.
- the lightning protection device is disposed at least partially in the rotor blade interior.
- the mounting plate is configured on a surface of the rotor blade and is operatively connected to the lighting protection device.
- the noise reducer is mounted to the mounting plate.
- FIG. 1 is a perspective view of one embodiment of a wind turbine of the present disclosure
- FIG. 2 is a perspective view of one embodiment of a rotor blade assembly of the present disclosure
- FIG. 3 is a sectional perspective view of one embodiment of a rotor blade assembly of the present disclosure
- FIG. 4 is a cross-sectional view of another embodiment of a rotor blade assembly of the present disclosure.
- FIG. 5 is a cross-sectional view of another embodiment of a rotor blade assembly of the present disclosure.
- FIG. 6 is a cross-sectional view of another embodiment of a rotor blade assembly of the present disclosure.
- FIG. 7 is a cross-sectional view of another embodiment of a rotor blade assembly of the present disclosure.
- FIG. 1 illustrates a wind turbine 10 of conventional construction.
- the wind turbine 10 includes a tower 12 with a nacelle 14 mounted thereon.
- a plurality of rotor blades 16 are mounted to a rotor hub 18 , which is in turn connected to a main flange that turns a main rotor shaft.
- the wind turbine power generation and control components are housed within the nacelle 14 .
- the view of FIG. 1 is provided for illustrative purposes only to place the present invention in an exemplary field of use. It should be appreciated that the invention is not limited to any particular type of wind turbine configuration.
- a rotor blade 16 may include surfaces defining a pressure side 22 (see FIGS. 3 through 7 ) and a suction side 24 extending between a leading edge 26 and a trailing edge 28 .
- the rotor blade 16 may extend from a blade tip 32 to a blade root 34 .
- the surfaces defining the pressure side 22 , suction side 24 , leading edge 26 , and trailing edge 28 further define a rotor blade interior 40 .
- the rotor blade 16 may include a plurality of individual blade segments aligned in an end-to-end order from the blade tip 32 to the blade root 34 .
- Each of the individual blade segments may be uniquely configured so that the plurality of blade segments define a complete rotor blade 16 having a designed aerodynamic profile, length, and other desired characteristics.
- each of the blade segments may have an aerodynamic profile that corresponds to the aerodynamic profile of adjacent blade segments.
- the aerodynamic profiles of the blade segments may form a continuous aerodynamic profile of the rotor blade 16 .
- the rotor blade 16 may be formed as a singular, unitary blade having the designed aerodynamic profile, length, and other desired characteristics.
- the rotor blade 16 may, in exemplary embodiments, be curved. Curving of the rotor blade 16 may entail bending the rotor blade 16 in a generally flapwise direction and/or in a generally edgewise direction.
- the flapwise direction may generally be construed as the direction (or the opposite direction) in which the aerodynamic lift acts on the rotor blade 16 .
- the edgewise direction is generally perpendicular to the flapwise direction. Flapwise curvature of the rotor blade 16 is also known as pre-bend, while edgewise curvature is also known as sweep. Thus, a curved rotor blade 16 may be pre-bent and/or swept. Curving may enable the rotor blade 16 to better withstand flapwise and edgewise loads during operation of the wind turbine 10 , and may further provide clearance for the rotor blade 16 from the tower 12 during operation of the wind turbine 10 .
- the present disclosure may further be directed to a rotor blade assembly 100 .
- the rotor blade assembly 100 may include a rotor blade 16 , a mounting plate 110 , and a noise reducer 112 .
- the mounting plate 110 may be configured to couple the noise reducer 112 to the rotor blade 16 .
- the noise reducer 110 may be configured to reduce the aerodynamic noise being emitted from the rotor blade 16 during operation of the wind turbine 10 and/or may increase the efficiency of the rotor blade 16 .
- the mounting plate 110 may be configured to couple the noise reducer 112 to the rotor blade 16 .
- the mounting plate 110 may be formed from a metal or metal alloy.
- the mounting plate 110 may be formed from aluminum.
- the mounting plate 110 may be formed from any suitable material.
- the mounting plate 110 may be formed from a material suitable to conduct the electrical current from lightning strikes, as discussed below.
- the mounting plate 110 may be formed from any material suitable for coupling the noise reducer 112 to the rotor blade 16 .
- the mounting plate 110 may be configured on a surface of the rotor blade 16 .
- the mounting plate 110 may extend from a surface of the rotor blade 16 .
- the mounting plate 110 may be configured on, and extend from, the trailing edge 28 of the rotor blade 16 .
- the mounting plate 110 may be disposed between the pressure side 22 and the suction side 24 of the rotor blade 16 .
- the rotor blade 16 may be formed from one or more shell portions.
- one shell portion may include the pressure side 22 and extend between the leading edge 26 and the trailing edge 28
- another shell portion may include the suction side 24 and extend between the leading edge 26 and the trailing edge 28 .
- the mounting plate 110 may be disposed between these shell portions such that a portion of the mounting plate 110 is disposed in the interior 40 of the rotor blade 16 , while another portion extends from the rotor blade 16 .
- the mounting plate 110 may be disposed between the pressure side 22 and the suction side 24 at the trailing edge 28 , such that the mounting plate 110 is configured on the trailing edge 28 .
- a suitable adhesive 113 or, alternatively, suitable mechanical fasteners, may be utilized to secure the mounting plate 110 as required.
- the mounting plate 110 may extend through a surface of the rotor blade 16 .
- the mounting plate 110 may extend through a shell portion of the rotor blade 16 at a desired location, such as at the trailing edge 28 , such that a portion of the mounting plate 110 is disposed in the interior 40 of the rotor blade 16 , while another portion extends from the rotor blade 16 .
- a suitable adhesive 113 or, alternatively, suitable mechanical fasteners, may be utilized to secure the mounting plate 110 as required.
- the mounting plate 110 may be mounted directly to the exterior of the rotor blade 16 through the use of, for example, a suitable adhesive 113 or suitable mechanical fasteners.
- the mounting plate 110 may be mounted between the pressure side 22 and the suction side 24 , such as, for example, mounted directly to the trailing edge 28 .
- the mounting plate 110 may be co-infused with a surface of the rotor blade 16 .
- the mounting plate 110 may be co-infused with the pressure side 22 , as shown in FIG. 7 , or the suction side 24 .
- the mounting plate 110 is formed into the surface.
- the blade skin 114 forming the exterior of, for example, the pressure side 22 or suction side 24 of the rotor blade 16 may be formed around both the mounting plate 110 and the material 116 forming the interior of the pressure side 22 or suction side 24 , such that the mounting plate 110 is formed into the pressure side 22 or suction side 24 .
- the blade skin 114 may further be infused together with the interior material 116 and/or the mounting plate 110 to form, for example, the pressure side 22 or the suction side 24 .
- the rotor blade assembly 100 of the present disclosure may further include a lightning protection device 120 .
- the lightning protection device 120 protects the rotor blade 16 and wind turbine 10 in general from lightning strikes.
- the lightning protection device 120 is a cable, such as a copper cable.
- the lighting protection device 120 may be disposed at least partially in the interior 40 of the rotor blade 16 .
- the lightning protection device 120 may extend in the interior 40 through at least a portion of the length of the rotor blade 16 .
- the lightning protection device 120 may be connected at various locations along the length of the rotor blade 16 to one or more electrically conducting lightning receptors (not shown) disposed on one or more of the surfaces of the rotor blade 16 .
- the lightning protection device 120 may further be in conductive communication with a grounding system in the wind turbine 10 , such as in the tower 12 of the wind turbine 10 .
- a grounding system in the wind turbine 10 , such as in the tower 12 of the wind turbine 10 .
- the mounting plate 110 may be operatively connected to the lightning protection device 120 .
- the lightning protection device 120 may protect the mounting plate 110 and noise reducer 112 from lightning strikes.
- the electrical current from lightning striking the mounting plate 110 or the noise reducer 112 may flow through the mounting plate 110 to the lightning protection device 120 .
- a conduction cable 122 or a plurality of conduction cables 122 may be provided to operatively connect the mounting plate 110 to the lightning protection device 120 .
- the conduction cable 122 is connected at one end to the mounting plate 110 and at the other end to the lightning protection device 120 . Electrical current from lightning strikes to the mounting plate 110 or the noise reducer 112 may thus flow from the mounting plate 110 through the conduction cable 122 to the lightning protection device 120 .
- the mounting plate 110 couples the noise reducer 112 to the rotor blade 16 .
- the noise reducer 112 may be mounted to the mounting plate 110 .
- the noise reducer 112 may be formed from any suitable material for reducing the noise and/or increasing the efficiency associated with the rotor blade 16 and wind turbine 10 .
- the noise reducer may be formed from a metal or metal alloy, such as aluminum, or from any material suitable to conduct the electrical current from lighting strikes, as discussed above.
- the noise reducer may be formed from any suitable non-conductive materials, such as from a glass-reinforced plastic composite.
- the noise reducer 112 may further include a plurality of noise reduction features 130 .
- the noise reduction features 130 in exemplary embodiments are serrations 132 .
- the noise reduction features 130 are not limited to serrations 132 .
- the noise reduction features 130 may be bristles. Further, any suitable noise reduction features 130 are within the scope and spirit of the present disclosure.
- the noise reduction features 130 may extend generally from the mounting plate 110 . While in exemplary embodiments the serrations 132 are generally V-shaped, as shown in FIGS. 2 and 3 , in alternative embodiments the serrations 132 may be U-shaped, or may have any other shape or configuration suitable for reducing the noise being emitted from and/or increasing the efficiency of the rotor blade 16 during operation of the wind turbine 10 .
- noise reduction features 130 may have any suitable characteristics, such as widths, lengths, shapes, or orientations, depending on the desired noise reduction characteristics for the noise reducer 110 . Further, individual noise reduction features 130 may have individual characteristics, or various groups of noise reduction features 130 may have similar characteristics, or all noise reduction features 130 may have similar characteristics, depending on the desired noise reduction characteristics for the noise reducer 110 .
- the noise reducer 112 may include a base plate 134 .
- the base plate 134 in these embodiments may generally be that portion of the noise reducer 110 that is mounted to the mounting plate 110 , and the noise reduction features 130 may extend from the base plate 134 .
- the noise reduction features 130 may be mounted directly to the mounting plate 110 , and extend directly from the mounting plate 110 .
- FIGS. 2 through 7 illustrate various apparatus for mounting the noise reducer 112 to the mounting plate 110 .
- at least one mechanical fastener 140 or a plurality of mechanical fasteners 140 may be provided to mount the noise reducer 112 to the mounting plate 110 .
- the mechanical fasteners may be, for example, nut/bolt combinations, rivets, screws, nails, or any other suitable mechanical fasteners.
- the mechanical fasteners may extend through the noise reducer 112 and mounting plate 110 to secure the noise reducer 112 and mounting plate 110 together.
- a male fastening device 142 and a female fastening device 144 may be provided to mount the noise reducer 112 to the mounting plate 110 .
- the male fastening device 142 and the female fastening device 144 may be configured to couple the noise reducer 112 and the mounting plate 110 together.
- the mounting plate 110 may include one of the male fastening device 142 and the female fastening device 144
- the noise reducer may include the other of the male fastening device 142 and the female fastening device 144 .
- FIG. 4 illustrates one embodiment of the male fastening device 142 and the female fastening device 144 .
- the male fastening device 142 is included on the mounting plate 110 and the female fastening device 144 is included on the noise reducer 112 .
- the male fastening device 142 may be include on the noise reducer 112 and the female fastening device 144 included on the mounting plate 110 .
- the male fastening device 142 is an end portion 152 of the mounting plate 110 configured to protrude into the female fastening device 144 .
- the female fastening device 144 is a bracketed portion 154 of the noise reducer 112 configured to accept the male fastening device 144 .
- the bracketed portion 154 is a generally U-shaped bracket. However, it should be understood that the bracketed portion 154 may have any shape suitable for accepting a male fastening device 144 therein. In some exemplary embodiments, as shown in FIG. 4 , various mechanical fasteners 140 may further be included to mount the noise reducer 112 to the mounting plate 110 .
- FIG. 5 illustrates another embodiment of the male fastening device 142 and the female fastening device 144 .
- the male fastening device 142 is included on the mounting plate 110 and the female fastening device 144 is included on the noise reducer 112 .
- the male fastening device 142 may be include on the noise reducer 112 and the female fastening device 144 included on the mounting plate 110 .
- the male fastening device 142 is a head portion 162 of the mounting plate 110 configured to protrude into the female fastening device 144 .
- the female fastening device 144 is a socket portion 164 of the noise reducer 112 configured to accept the male fastening device 144 .
- the head portion 162 and socket portion 164 are generally spherically-shaped. However, it should be understood that the head portion 162 and socket portion 164 may have any shapes suitable for engaging each other.
- the socket portion 164 may be a snap-fit socket portion 164 , such that the head portion 162 may be snap-fit into the socket portion 164 .
- the head portion 162 and socket portion 164 may be engaged in the generally chord-wise direction relative to the rotor blade 16 .
- the head portion 162 and socket portion 164 may be engaged in the generally span-wise direction relative to the rotor blade 16 by sliding the head portion 162 through the socket portion 164 in the generally span-wise direction.
- various mechanical fasteners 140 may be included to mount the noise reducer 112 to the mounting plate 110 .
- FIG. 6 illustrates another embodiment of the male fastening device 142 and the female fastening device 144 .
- the male fastening device 142 is included on the noise reducer 112 and the female fastening device 144 is included on the mounting plate 110 .
- the male fastening device 142 may be include on the mounting plate 110 and the female fastening device 144 included on the noise reducer 112 .
- the male fastening device 142 is an offset end portion 172 of the mounting plate 110 configured to protrude into the female fastening device 144 .
- the offset end portion 172 defines an engagement wall 173 .
- the female fastening device 144 is a bracketed portion 174 of the noise reducer 112 configured to accept the male fastening device 144 .
- the bracketed portion 174 is a generally U-shaped bracket. However, it should be understood that the bracketed portion 174 may have any shape suitable for accepting a male fastening device 144 therein.
- the bracketed portion 174 may include an engagement lip 175 . When the male fastening device 142 and the female fastening device 144 are coupled together, the engagement wall 173 and engagement lip 175 may engage each other.
- the engagement lip 175 may thus accept the centrifugal load of the noise reducer 112 as transmitted through the engagement wall 173 .
- various mechanical fasteners 140 may further be included to mount the noise reducer 112 to the mounting plate 110 .
- the embodiments as disclosed above for mounting the noise reducer 112 to the mounting plate 110 may, advantageously, allow for the noise reducers 112 to be efficiently and cost-effectively mounted to rotor blades 16 on-site. Further, the above embodiments may allow for efficient and cost-effective replacement of the noise reducers 112 as required.
- FIGS. 2 through 7 illustrate various embodiments of apparatus for mounting the noise reducer 112 to the mounting plate 110
- any suitable apparatus for mounting the noise reducer 112 to the mounting plate 110 are within the scope and spirit of the present disclosure.
Abstract
A rotor blade assembly for a wind turbine is disclosed. The rotor blade assembly includes a rotor blade having surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a tip and a root. The rotor blade assembly further includes a mounting plate and a noise reducer. The mounting plate is configured on a surface of the rotor blade. The noise reducer may include a base plate and a plurality of noise reduction features. The base plate is mounted to the mounting plate. The plurality of noise reduction features extend from the base plate.
Description
- The present disclosure relates in general to wind turbine rotor blades, and more particularly to noise reducers mounted to the rotor blades.
- Wind power is considered one of the cleanest, most environmentally friendly energy sources presently available, and wind turbines have gained increased attention in this regard. A modern wind turbine typically includes a tower, generator, gearbox, nacelle, and one or more rotor blades. The rotor blades capture kinetic energy of wind using known foil principles. The rotor blades transmit the kinetic energy in the form of rotational energy so as to turn a shaft coupling the rotor blades to a gearbox, or if a gearbox is not used, directly to the generator. The generator then converts the mechanical energy to electrical energy that may be deployed to a utility grid.
- In many cases, various components are attached to the rotor blades of wind turbines to perform various functions during operation of the wind turbines. These components may frequently be attached adjacent to the trailing edges of the rotor blades. For example, noise reducers may be attached to the trailing edges of the rotor blades to reduce the noise and increase the efficiency associated with the rotor blade.
- Typical prior art noise reducers are mounted directly to a surface of the rotor blade using glue or another suitable adhesive. These noise reducers may have a variety of disadvantages. For example, the noise reducers are generally mounted to rotor blades during manufacturing before the rotor blades are transported to the wind turbine site. The noise reducers are thus easily susceptible to damage during transportation. Additionally, the adhesives used to mount the noise reducers make replacement of the noise reducers difficult, expensive, and time consuming. Further, during operation of a wind turbine, the noise reducers are particularly vulnerable to damage from lightning strikes. The lightning strikes may additionally damage the rotor blade as a result of contact with the noise reducers.
- Thus, an improved noise reducer for a rotor blade would be desired. For example, a noise reducer that allows for on-site mounting to a rotor blade would be advantageous. Further, a noise reducer that allows for relatively easy, cost-effective, and efficient replacement would be advantageous. Additionally, a noise reducer that reduces the vulnerability of the noise reducer and rotor blade to damage from lightning strikes would be desired.
- Aspects and advantages of the invention will be set forth in part in the following description, or may be obvious from the description, or may be learned through practice of the invention.
- In one embodiment, a rotor blade assembly for a wind turbine is disclosed. The rotor blade assembly includes a rotor blade having surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a tip and a root. The rotor blade assembly further includes a mounting plate and a noise reducer. The mounting plate is configured on a surface of the rotor blade. The noise reducer includes a base plate and a plurality of noise reduction features. The base plate is mounted to the mounting plate. The plurality of noise reduction features extend from the base plate.
- In another embodiment, a rotor blade assembly for a wind turbine is disclosed. The rotor blade assembly includes a rotor blade having surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a tip and a root, the surfaces further defining a rotor blade interior. The rotor blade assembly further includes a lightning protection device, a mounting plate and a noise reducer. The lightning protection device is disposed at least partially in the rotor blade interior. The mounting plate is configured on a surface of the rotor blade and is operatively connected to the lighting protection device. The noise reducer is mounted to the mounting plate.
- These and other features, aspects and advantages of the present invention will become better understood with reference to the following description and appended claims. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
- A full and enabling disclosure of the present invention, including the best mode thereof, directed to one of ordinary skill in the art, is set forth in the specification, which makes reference to the appended figures, in which:
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FIG. 1 is a perspective view of one embodiment of a wind turbine of the present disclosure; -
FIG. 2 is a perspective view of one embodiment of a rotor blade assembly of the present disclosure; -
FIG. 3 is a sectional perspective view of one embodiment of a rotor blade assembly of the present disclosure; -
FIG. 4 is a cross-sectional view of another embodiment of a rotor blade assembly of the present disclosure; -
FIG. 5 is a cross-sectional view of another embodiment of a rotor blade assembly of the present disclosure; -
FIG. 6 is a cross-sectional view of another embodiment of a rotor blade assembly of the present disclosure; and, -
FIG. 7 is a cross-sectional view of another embodiment of a rotor blade assembly of the present disclosure. - Reference now will be made in detail to embodiments of the invention, one or more examples of which are illustrated in the drawings. Each example is provided by way of explanation of the invention, not limitation of the invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For instance, features illustrated or described as part of one embodiment can be used with another embodiment to yield a still further embodiment. Thus, it is intended that the present invention covers such modifications and variations as come within the scope of the appended claims and their equivalents.
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FIG. 1 illustrates awind turbine 10 of conventional construction. Thewind turbine 10 includes atower 12 with anacelle 14 mounted thereon. A plurality ofrotor blades 16 are mounted to arotor hub 18, which is in turn connected to a main flange that turns a main rotor shaft. The wind turbine power generation and control components are housed within thenacelle 14. The view ofFIG. 1 is provided for illustrative purposes only to place the present invention in an exemplary field of use. It should be appreciated that the invention is not limited to any particular type of wind turbine configuration. - Referring to
FIG. 2 , arotor blade 16 according to the present disclosure may include surfaces defining a pressure side 22 (seeFIGS. 3 through 7 ) and asuction side 24 extending between a leadingedge 26 and atrailing edge 28. Therotor blade 16 may extend from ablade tip 32 to ablade root 34. The surfaces defining thepressure side 22,suction side 24, leadingedge 26, andtrailing edge 28 further define arotor blade interior 40. - In some embodiments, the
rotor blade 16 may include a plurality of individual blade segments aligned in an end-to-end order from theblade tip 32 to theblade root 34. Each of the individual blade segments may be uniquely configured so that the plurality of blade segments define acomplete rotor blade 16 having a designed aerodynamic profile, length, and other desired characteristics. For example, each of the blade segments may have an aerodynamic profile that corresponds to the aerodynamic profile of adjacent blade segments. Thus, the aerodynamic profiles of the blade segments may form a continuous aerodynamic profile of therotor blade 16. Alternatively, therotor blade 16 may be formed as a singular, unitary blade having the designed aerodynamic profile, length, and other desired characteristics. - The
rotor blade 16 may, in exemplary embodiments, be curved. Curving of therotor blade 16 may entail bending therotor blade 16 in a generally flapwise direction and/or in a generally edgewise direction. The flapwise direction may generally be construed as the direction (or the opposite direction) in which the aerodynamic lift acts on therotor blade 16. The edgewise direction is generally perpendicular to the flapwise direction. Flapwise curvature of therotor blade 16 is also known as pre-bend, while edgewise curvature is also known as sweep. Thus, acurved rotor blade 16 may be pre-bent and/or swept. Curving may enable therotor blade 16 to better withstand flapwise and edgewise loads during operation of thewind turbine 10, and may further provide clearance for therotor blade 16 from thetower 12 during operation of thewind turbine 10. - As illustrated in
FIGS. 2 through 7 , the present disclosure may further be directed to arotor blade assembly 100. Therotor blade assembly 100 may include arotor blade 16, a mountingplate 110, and anoise reducer 112. In general, the mountingplate 110 may be configured to couple thenoise reducer 112 to therotor blade 16. Thenoise reducer 110 may be configured to reduce the aerodynamic noise being emitted from therotor blade 16 during operation of thewind turbine 10 and/or may increase the efficiency of therotor blade 16. - As mentioned, the mounting
plate 110 may be configured to couple thenoise reducer 112 to therotor blade 16. In exemplary embodiments, the mountingplate 110 may be formed from a metal or metal alloy. For example, the mountingplate 110 may be formed from aluminum. Alternatively, however, the mountingplate 110 may be formed from any suitable material. For example, in some embodiments, the mountingplate 110 may be formed from a material suitable to conduct the electrical current from lightning strikes, as discussed below. Alternatively, the mountingplate 110 may be formed from any material suitable for coupling thenoise reducer 112 to therotor blade 16. - The mounting
plate 110 may be configured on a surface of therotor blade 16. For example, in some embodiments as illustrated inFIGS. 2 through 6 , the mountingplate 110 may extend from a surface of therotor blade 16. As shown, the mountingplate 110 may be configured on, and extend from, the trailingedge 28 of therotor blade 16. - In exemplary embodiments as shown in
FIGS. 2 through 6 , the mountingplate 110 may be disposed between thepressure side 22 and thesuction side 24 of therotor blade 16. In these embodiments, therotor blade 16 may be formed from one or more shell portions. For example, one shell portion may include thepressure side 22 and extend between theleading edge 26 and the trailingedge 28, while another shell portion may include thesuction side 24 and extend between theleading edge 26 and the trailingedge 28. The mountingplate 110 may be disposed between these shell portions such that a portion of the mountingplate 110 is disposed in theinterior 40 of therotor blade 16, while another portion extends from therotor blade 16. In exemplary embodiments, the mountingplate 110 may be disposed between thepressure side 22 and thesuction side 24 at the trailingedge 28, such that the mountingplate 110 is configured on the trailingedge 28. Asuitable adhesive 113 or, alternatively, suitable mechanical fasteners, may be utilized to secure the mountingplate 110 as required. - In alternative embodiments, the mounting
plate 110 may extend through a surface of therotor blade 16. For example, the mountingplate 110 may extend through a shell portion of therotor blade 16 at a desired location, such as at the trailingedge 28, such that a portion of the mountingplate 110 is disposed in theinterior 40 of therotor blade 16, while another portion extends from therotor blade 16. Asuitable adhesive 113 or, alternatively, suitable mechanical fasteners, may be utilized to secure the mountingplate 110 as required. - In further alternative embodiments, the mounting
plate 110 may be mounted directly to the exterior of therotor blade 16 through the use of, for example, asuitable adhesive 113 or suitable mechanical fasteners. For example, the mountingplate 110 may be mounted between thepressure side 22 and thesuction side 24, such as, for example, mounted directly to the trailingedge 28. - In other alternative embodiments, as shown in
FIG. 7 , the mountingplate 110 may be co-infused with a surface of therotor blade 16. For example, the mountingplate 110 may be co-infused with thepressure side 22, as shown inFIG. 7 , or thesuction side 24. To be co-infused with a surface of therotor blade 16, the mountingplate 110 is formed into the surface. For example, theblade skin 114 forming the exterior of, for example, thepressure side 22 orsuction side 24 of therotor blade 16 may be formed around both the mountingplate 110 and thematerial 116 forming the interior of thepressure side 22 orsuction side 24, such that the mountingplate 110 is formed into thepressure side 22 orsuction side 24. Theblade skin 114 may further be infused together with theinterior material 116 and/or the mountingplate 110 to form, for example, thepressure side 22 or thesuction side 24. - As shown in
FIGS. 2 through 7 , therotor blade assembly 100 of the present disclosure may further include alightning protection device 120. In general, thelightning protection device 120 protects therotor blade 16 andwind turbine 10 in general from lightning strikes. In exemplary embodiments, thelightning protection device 120 is a cable, such as a copper cable. Thelighting protection device 120 may be disposed at least partially in theinterior 40 of therotor blade 16. For example, thelightning protection device 120 may extend in the interior 40 through at least a portion of the length of therotor blade 16. Further, thelightning protection device 120 may be connected at various locations along the length of therotor blade 16 to one or more electrically conducting lightning receptors (not shown) disposed on one or more of the surfaces of therotor blade 16. Thelightning protection device 120 may further be in conductive communication with a grounding system in thewind turbine 10, such as in thetower 12 of thewind turbine 10. Thus, in general, when lightning strikes therotor blade 16, the electrical current flows from the lightning receptors through thelightning protection device 120 to the ground, thereby preventing damage to thewind turbine 10. - In exemplary embodiments, the mounting
plate 110 may be operatively connected to thelightning protection device 120. When the mountingplate 110 andlightning protection device 120 are operatively connected, thelightning protection device 120 may protect the mountingplate 110 andnoise reducer 112 from lightning strikes. Thus, for example, the electrical current from lightning striking the mountingplate 110 or thenoise reducer 112, discussed below, may flow through the mountingplate 110 to thelightning protection device 120. In some embodiments, aconduction cable 122 or a plurality ofconduction cables 122 may be provided to operatively connect the mountingplate 110 to thelightning protection device 120. Theconduction cable 122 is connected at one end to the mountingplate 110 and at the other end to thelightning protection device 120. Electrical current from lightning strikes to the mountingplate 110 or thenoise reducer 112 may thus flow from the mountingplate 110 through theconduction cable 122 to thelightning protection device 120. - As discussed above, the mounting
plate 110 couples thenoise reducer 112 to therotor blade 16. Thus, thenoise reducer 112 may be mounted to the mountingplate 110. Thenoise reducer 112 may be formed from any suitable material for reducing the noise and/or increasing the efficiency associated with therotor blade 16 andwind turbine 10. In some embodiments, the noise reducer may be formed from a metal or metal alloy, such as aluminum, or from any material suitable to conduct the electrical current from lighting strikes, as discussed above. In alternative embodiments, the noise reducer may be formed from any suitable non-conductive materials, such as from a glass-reinforced plastic composite. - The
noise reducer 112 may further include a plurality of noise reduction features 130. As described herein and illustrated inFIGS. 2 and 3 , the noise reduction features 130 in exemplary embodiments areserrations 132. However, it should be understood that the noise reduction features 130 are not limited toserrations 132. For example, in some alternative embodiments the noise reduction features 130 may be bristles. Further, any suitable noise reduction features 130 are within the scope and spirit of the present disclosure. - As shown in
FIGS. 2 through 7 , the noise reduction features 130, such as theserrations 132, may extend generally from the mountingplate 110. While in exemplary embodiments theserrations 132 are generally V-shaped, as shown inFIGS. 2 and 3 , in alternative embodiments theserrations 132 may be U-shaped, or may have any other shape or configuration suitable for reducing the noise being emitted from and/or increasing the efficiency of therotor blade 16 during operation of thewind turbine 10. - It should be understood that the noise reduction features 130 according to the present disclosure may have any suitable characteristics, such as widths, lengths, shapes, or orientations, depending on the desired noise reduction characteristics for the
noise reducer 110. Further, individual noise reduction features 130 may have individual characteristics, or various groups of noise reduction features 130 may have similar characteristics, or all noise reduction features 130 may have similar characteristics, depending on the desired noise reduction characteristics for thenoise reducer 110. - In some exemplary embodiments, as shown in
FIGS. 2 through 7 , thenoise reducer 112 may include abase plate 134. Thebase plate 134 in these embodiments may generally be that portion of thenoise reducer 110 that is mounted to the mountingplate 110, and the noise reduction features 130 may extend from thebase plate 134. Alternatively, the noise reduction features 130 may be mounted directly to the mountingplate 110, and extend directly from the mountingplate 110. -
FIGS. 2 through 7 illustrate various apparatus for mounting thenoise reducer 112 to the mountingplate 110. In some embodiments, as shown inFIGS. 2 , 3, and 7, for example, at least onemechanical fastener 140 or a plurality ofmechanical fasteners 140 may be provided to mount thenoise reducer 112 to the mountingplate 110. The mechanical fasteners may be, for example, nut/bolt combinations, rivets, screws, nails, or any other suitable mechanical fasteners. The mechanical fasteners may extend through thenoise reducer 112 and mountingplate 110 to secure thenoise reducer 112 and mountingplate 110 together. - In other embodiments, as shown in
FIGS. 4 through 6 , amale fastening device 142 and afemale fastening device 144 may be provided to mount thenoise reducer 112 to the mountingplate 110. In general, themale fastening device 142 and thefemale fastening device 144 may be configured to couple thenoise reducer 112 and the mountingplate 110 together. The mountingplate 110 may include one of themale fastening device 142 and thefemale fastening device 144, and the noise reducer may include the other of themale fastening device 142 and thefemale fastening device 144. - For example,
FIG. 4 illustrates one embodiment of themale fastening device 142 and thefemale fastening device 144. In this embodiment, themale fastening device 142 is included on the mountingplate 110 and thefemale fastening device 144 is included on thenoise reducer 112. It should be understood, however, that in other embodiments, themale fastening device 142 may be include on thenoise reducer 112 and thefemale fastening device 144 included on the mountingplate 110. As shown, themale fastening device 142 is anend portion 152 of the mountingplate 110 configured to protrude into thefemale fastening device 144. Thefemale fastening device 144 is a bracketedportion 154 of thenoise reducer 112 configured to accept themale fastening device 144. As shown, the bracketedportion 154 is a generally U-shaped bracket. However, it should be understood that the bracketedportion 154 may have any shape suitable for accepting amale fastening device 144 therein. In some exemplary embodiments, as shown inFIG. 4 , variousmechanical fasteners 140 may further be included to mount thenoise reducer 112 to the mountingplate 110. -
FIG. 5 illustrates another embodiment of themale fastening device 142 and thefemale fastening device 144. In this embodiment, themale fastening device 142 is included on the mountingplate 110 and thefemale fastening device 144 is included on thenoise reducer 112. It should be understood, however, that in other embodiments, themale fastening device 142 may be include on thenoise reducer 112 and thefemale fastening device 144 included on the mountingplate 110. As shown, themale fastening device 142 is ahead portion 162 of the mountingplate 110 configured to protrude into thefemale fastening device 144. Thefemale fastening device 144 is asocket portion 164 of thenoise reducer 112 configured to accept themale fastening device 144. As shown, thehead portion 162 andsocket portion 164 are generally spherically-shaped. However, it should be understood that thehead portion 162 andsocket portion 164 may have any shapes suitable for engaging each other. In some embodiments, thesocket portion 164 may be a snap-fit socket portion 164, such that thehead portion 162 may be snap-fit into thesocket portion 164. Thus, thehead portion 162 andsocket portion 164 may be engaged in the generally chord-wise direction relative to therotor blade 16. Additionally or alternatively, thehead portion 162 andsocket portion 164 may be engaged in the generally span-wise direction relative to therotor blade 16 by sliding thehead portion 162 through thesocket portion 164 in the generally span-wise direction. Further, in some embodiments, variousmechanical fasteners 140 may be included to mount thenoise reducer 112 to the mountingplate 110. -
FIG. 6 illustrates another embodiment of themale fastening device 142 and thefemale fastening device 144. In this embodiment, themale fastening device 142 is included on thenoise reducer 112 and thefemale fastening device 144 is included on the mountingplate 110. It should be understood, however, that in other embodiments, themale fastening device 142 may be include on the mountingplate 110 and thefemale fastening device 144 included on thenoise reducer 112. As shown, themale fastening device 142 is an offsetend portion 172 of the mountingplate 110 configured to protrude into thefemale fastening device 144. The offsetend portion 172 defines anengagement wall 173. Thefemale fastening device 144 is a bracketedportion 174 of thenoise reducer 112 configured to accept themale fastening device 144. As shown, the bracketedportion 174 is a generally U-shaped bracket. However, it should be understood that the bracketedportion 174 may have any shape suitable for accepting amale fastening device 144 therein. The bracketedportion 174 may include anengagement lip 175. When themale fastening device 142 and thefemale fastening device 144 are coupled together, theengagement wall 173 andengagement lip 175 may engage each other. Advantageously, when thewind turbine 10 is in operation and therotor blade 16 is moving, theengagement lip 175 may thus accept the centrifugal load of thenoise reducer 112 as transmitted through theengagement wall 173. In some exemplary embodiments, as shown inFIG. 6 , variousmechanical fasteners 140 may further be included to mount thenoise reducer 112 to the mountingplate 110. - The embodiments as disclosed above for mounting the
noise reducer 112 to the mountingplate 110 may, advantageously, allow for thenoise reducers 112 to be efficiently and cost-effectively mounted torotor blades 16 on-site. Further, the above embodiments may allow for efficient and cost-effective replacement of thenoise reducers 112 as required. - It should be understood that, while
FIGS. 2 through 7 illustrate various embodiments of apparatus for mounting thenoise reducer 112 to the mountingplate 110, any suitable apparatus for mounting thenoise reducer 112 to the mountingplate 110 are within the scope and spirit of the present disclosure. - This written description uses examples to disclose the invention, including the best mode, and also to enable any person skilled in the art to practice the invention, including making and using any devices or systems and performing any incorporated methods. The patentable scope of the invention is defined by the claims, and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they include structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal languages of the claims.
Claims (20)
1. A rotor blade assembly for a wind turbine, comprising:
a rotor blade having surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a tip and a root;
a mounting plate configured on a surface of the rotor blade; and,
a noise reducer, the noise reducer comprising a base plate and a plurality of noise reduction features, the base plate mounted to the mounting plate, the plurality of noise reduction features extending from the base plate.
2. The rotor blade assembly of claim 1 , wherein the mounting plate extends through a surface of the rotor blade.
3. The rotor blade assembly of claim 1 , wherein the mounting plate and one of the pressure side and the suction side are co-infused.
4. The rotor blade assembly of claim 1 , wherein the mounting plate is disposed between the pressure side and the suction side.
5. The rotor blade assembly of claim 1 , wherein the mounting plate is configured on the trailing edge.
6. The rotor blade assembly of claim 1 , wherein the surfaces of the rotor blade further define a rotor blade interior, wherein the rotor blade further comprises a lightning protection device disposed at least partially in the rotor blade interior, and wherein the mounting plate is operatively connected to the lighting protection device.
7. The rotor blade assembly of claim 6 , further comprising a conduction cable operatively connecting the mounting plate to the lightning protection device.
8. The rotor blade assembly of claim 1 , further comprising at least one mechanical fastener mounting the base plate to the mounting plate.
9. The rotor blade assembly of claim 1 , wherein the mounting plate includes one of a male fastening device or a female fastening device, wherein the base plate includes the other of the male fastening device or the female fastening device, and wherein the male fastening device and female fastening device are configured to couple the base plate and the mounting plate together.
10. The rotor blade assembly of claim 1 , wherein the plurality of noise reduction features are a plurality of serrations.
11. A rotor blade assembly for a wind turbine, comprising:
a rotor blade having surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a tip and a root, the surfaces further defining a rotor blade interior;
a lightning protection device disposed at least partially in the rotor blade interior;
a mounting plate configured on a surface of the rotor blade and operatively connected to the lighting protection device; and,
a noise reducer mounted to the mounting plate.
12. The rotor blade assembly of claim 11 , wherein the mounting plate extends through a surface of the rotor blade.
13. The rotor blade assembly of claim 11 , wherein the mounting plate and one of the pressure side and the suction side are co-infused.
14. The rotor blade assembly of claim 11 , wherein the mounting plate is disposed between the pressure side and the suction side.
15. The rotor blade assembly of claim 11 , wherein the mounting plate is configured on the trailing edge.
16. The rotor blade assembly of claim 11 , further comprising at least one mechanical fastener mounting the noise reducer to the mounting plate.
17. The rotor blade assembly of claim 11 , wherein the mounting plate includes one of a male fastening device or a female fastening device, wherein the noise reducer includes the other of the male fastening device or the female fastening device, and wherein the male fastening device and female fastening device are configured to couple the noise reducer and the mounting plate together.
18. The rotor blade assembly of claim 11 , further comprising a conduction cable operatively connecting the mounting plate to the lightning protection device.
19. The rotor blade assembly of claim 11 , wherein the noise reducer comprising a base plate and a plurality of noise reduction features, the base plate mounted to the mounting plate, the plurality of noise reduction features extending from the base plate.
20. The rotor blade assembly of claim 19 , wherein the plurality of noise reduction features are a plurality of serrations.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2010/001920 WO2012071679A1 (en) | 2010-11-30 | 2010-11-30 | Noise reducer for rotor blade in wind turbine |
Publications (1)
Publication Number | Publication Date |
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US20130272892A1 true US20130272892A1 (en) | 2013-10-17 |
Family
ID=46171139
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US13/988,357 Abandoned US20130272892A1 (en) | 2010-11-30 | 2010-11-30 | Noise reducer for rotor blade in wind turbine |
Country Status (4)
Country | Link |
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US (1) | US20130272892A1 (en) |
EP (1) | EP2646682A4 (en) |
CA (1) | CA2818201C (en) |
WO (1) | WO2012071679A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120141277A1 (en) * | 2011-09-09 | 2012-06-07 | General Electric Company | Integrated Lightning Receptor System and Trailing Edge Noise Reducer for a Wind Turbine Rotor Blade |
EP2868916A1 (en) * | 2013-10-31 | 2015-05-06 | General Electric Company | Chord extenders for a wind turbine rotor blade assembly |
US20150300317A1 (en) * | 2012-12-07 | 2015-10-22 | Wobben Properties Gmbh | Wind turbine |
WO2015185065A1 (en) * | 2014-06-05 | 2015-12-10 | Vestas Wind Systems A/S | Improvements relating to lightning protection systems for wind turbine blades |
US9494134B2 (en) | 2013-11-20 | 2016-11-15 | General Electric Company | Noise reducing extension plate for rotor blade in wind turbine |
US10746157B2 (en) | 2018-08-31 | 2020-08-18 | General Electric Company | Noise reducer for a wind turbine rotor blade having a cambered serration |
US10767623B2 (en) | 2018-04-13 | 2020-09-08 | General Electric Company | Serrated noise reducer for a wind turbine rotor blade |
WO2020231828A1 (en) * | 2019-05-10 | 2020-11-19 | Blade Dynamics Limited | Longitudinal edge extension |
US11608815B2 (en) * | 2018-11-20 | 2023-03-21 | Lm Wind Power A/S | Wind turbine blade lightning protection system |
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CN104736841A (en) * | 2012-09-24 | 2015-06-24 | 西门子公司 | A wind turbine blade with a noise reducing device |
GB201410675D0 (en) | 2014-06-16 | 2014-07-30 | Univ Brunel | Noise reduction to the trailing edge of fluid dynamic bodies |
EP3176425A1 (en) * | 2015-12-01 | 2017-06-07 | Stichting Nationaal Lucht- en Ruimtevaart Laboratorium | Assembly of aerofoil-shaped body and noise reducing serration and wind turbine provided therewith |
US10400744B2 (en) | 2016-04-28 | 2019-09-03 | General Electric Company | Wind turbine blade with noise reducing micro boundary layer energizers |
CN108194258B (en) * | 2017-12-27 | 2020-01-31 | 江苏金风科技有限公司 | Noise reduction device for blade, wind generating set and noise reduction method |
GB202002557D0 (en) * | 2020-02-24 | 2020-04-08 | Kudhail Jagjeet Singh | Noise reduction element and a wind turbine blade comprising a noise reduction element |
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NL9301910A (en) * | 1993-11-04 | 1995-06-01 | Stork Prod Eng | Wind turbine. |
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EP1338793A3 (en) * | 2002-02-22 | 2010-09-01 | Mitsubishi Heavy Industries, Ltd. | Serrated wind turbine blade trailing edge |
CN100455793C (en) * | 2003-03-31 | 2009-01-28 | 丹麦技术大学 | Control of power, loads and/or stability of a horizontal axis wind turbine by use of variable blade geometry control |
DK176352B1 (en) * | 2005-12-20 | 2007-09-10 | Lm Glasfiber As | Profile series for blade for wind turbines |
ES2310958B1 (en) * | 2006-09-15 | 2009-11-10 | GAMESA INNOVATION & TECHNOLOGY, S.L. | OPTIMIZED AEROGENERATOR SHOVEL. |
JP2008115783A (en) * | 2006-11-06 | 2008-05-22 | Fuji Heavy Ind Ltd | Blade for wind turbine |
US7413408B1 (en) * | 2007-02-22 | 2008-08-19 | Samuel B Tafoya | Vibration-reducing and noise-reducing spoiler for helicopter rotors, aircraft wings, propellers, and turbine blades |
ES2345583B1 (en) * | 2007-05-31 | 2011-07-28 | GAMESA INNOVATION & TECHNOLOGY, S.L. | AEROGENERATOR SHOVEL WITH ANTI-NOISE DEVICES. |
CN102007291A (en) * | 2008-08-06 | 2011-04-06 | 三菱重工业株式会社 | Wind turbine blade and wind power generator using the same |
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2010
- 2010-11-30 EP EP10860387.9A patent/EP2646682A4/en not_active Withdrawn
- 2010-11-30 US US13/988,357 patent/US20130272892A1/en not_active Abandoned
- 2010-11-30 CA CA2818201A patent/CA2818201C/en not_active Expired - Fee Related
- 2010-11-30 WO PCT/CN2010/001920 patent/WO2012071679A1/en active Application Filing
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120141277A1 (en) * | 2011-09-09 | 2012-06-07 | General Electric Company | Integrated Lightning Receptor System and Trailing Edge Noise Reducer for a Wind Turbine Rotor Blade |
US8834117B2 (en) * | 2011-09-09 | 2014-09-16 | General Electric Company | Integrated lightning receptor system and trailing edge noise reducer for a wind turbine rotor blade |
US20150300317A1 (en) * | 2012-12-07 | 2015-10-22 | Wobben Properties Gmbh | Wind turbine |
US10082129B2 (en) * | 2012-12-07 | 2018-09-25 | Wobben Properties Gmbh | Wind turbine |
EP2868916A1 (en) * | 2013-10-31 | 2015-05-06 | General Electric Company | Chord extenders for a wind turbine rotor blade assembly |
US9494134B2 (en) | 2013-11-20 | 2016-11-15 | General Electric Company | Noise reducing extension plate for rotor blade in wind turbine |
WO2015185065A1 (en) * | 2014-06-05 | 2015-12-10 | Vestas Wind Systems A/S | Improvements relating to lightning protection systems for wind turbine blades |
US10767623B2 (en) | 2018-04-13 | 2020-09-08 | General Electric Company | Serrated noise reducer for a wind turbine rotor blade |
US10746157B2 (en) | 2018-08-31 | 2020-08-18 | General Electric Company | Noise reducer for a wind turbine rotor blade having a cambered serration |
US11608815B2 (en) * | 2018-11-20 | 2023-03-21 | Lm Wind Power A/S | Wind turbine blade lightning protection system |
WO2020231828A1 (en) * | 2019-05-10 | 2020-11-19 | Blade Dynamics Limited | Longitudinal edge extension |
Also Published As
Publication number | Publication date |
---|---|
WO2012071679A1 (en) | 2012-06-07 |
EP2646682A4 (en) | 2014-08-06 |
CA2818201C (en) | 2014-11-18 |
CA2818201A1 (en) | 2012-06-07 |
EP2646682A1 (en) | 2013-10-09 |
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