WO2014048581A1 - Pale d'éolienne dotée d'un dispositif de réduction du bruit - Google Patents
Pale d'éolienne dotée d'un dispositif de réduction du bruit Download PDFInfo
- Publication number
- WO2014048581A1 WO2014048581A1 PCT/EP2013/052728 EP2013052728W WO2014048581A1 WO 2014048581 A1 WO2014048581 A1 WO 2014048581A1 EP 2013052728 W EP2013052728 W EP 2013052728W WO 2014048581 A1 WO2014048581 A1 WO 2014048581A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wind turbine
- trailing edge
- turbine blade
- spines
- blade according
- Prior art date
Links
- 230000001603 reducing effect Effects 0.000 title claims abstract description 15
- 210000001520 comb Anatomy 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- RLQJEEJISHYWON-UHFFFAOYSA-N flonicamid Chemical compound FC(F)(F)C1=CC=NC=C1C(=O)NCC#N RLQJEEJISHYWON-UHFFFAOYSA-N 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010959 steel 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
- F03D1/0608—Rotors characterised by their aerodynamic shape
-
- 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
-
- 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
- F05B2260/962—Preventing, counteracting or reducing vibration or noise by means creating "anti-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
- a WIND TURBINE BLADE WITH A NOISE REDUCING DEVICE The present invention relates to a wind turbine blade having a noise reducing device attached at its trailing edge.
- Wind turbine blades generate aerodynamic noise when the wind turbine operates and the rotor is in rotational movement.
- aerodynamic noise source mechanism for lifting air ⁇ foils can be classified as follows: a) turbulent boundary- layer flow shed off of the trailing edge, b) separated boundary-layer and stalled airfoil flow, c) vortex shedding due to laminar boundary-layer instabilities, and d) vortex shedding from blunt trailing edges.
- Noise sets a limitation on how close a wind turbine can be built to residential areas and at what rotational frequency a rotor of a wind turbine can rotate.
- EP 0652367 Al proposes a wind turbine having a trailing edge with a saw-tooth form.
- a saw- tooth-shaped strip can be used which is fixed to the trailing edge of the rotor blade.
- US 2008/0166241 Al discloses a wind turbine blade brush with bristles or a brush disposed on an outer surface of the wind turbine blade.
- the function of the bristles is to achieve a noise reduction effect.
- the bristles can be arranged in at least one row along a longitudinal direction of the blade or in the vicinity of a trailing edge.
- DE 10340978 Bl similarly discloses a wind turbine blade with a brush attached to the trailing edge wherein single fibers of the brush branch out. The branches of the brush imitate feathers of an owl. It is an object of the present invention to provide a wind turbine blade with an efficient noise reducing device.
- the noise reducing device comprises a trailing edge comb with multiple aligned spines.
- the present invention is based on the idea that aerodynamic noise can be reduced significantly by using a trailing edge comb comprising several spines which are positioned in a certain distance from each other. Each spine has a
- the diameter of a spine decreases towards the trailing edge. This means that the smaller diameter of a spine is at the outer side of the trailing edge.
- said multiple aligned spines are arranged in parallel at the trailing edge.
- the trailing edge comb comprises aligned spines which differ in diameter and/or stiffness and/or length.
- the trailing edge comb comprises aligned spines with a different distance between adjacent spines.
- Each trailing edge comb has to be specifically adapted to the airfoil of the wind turbine blade and its dimensions. Another factor which influences the effect of the trailing edge comb is the projected rotational speed of the wind turbine blade. In every case the properties and dimensions of the spines have to be adapted to the wind turbine blade.
- trailing edge comb for the inventive wind turbine blade comprising two or more layers of combs stacked one above another, whereby spines of one layer preferably cover a space between adjacent spines of another layer.
- spines of different layers have different properties and dimensions.
- the trailing edge comb can be arranged in a section ranging approximately from 75 % to 95 % of the span. It was found out that this section is particularly relevant in order to reduce aerodynamic noise by using a trailing edge comb.
- the trailing edge comb is printed by a 3D printer.
- This production technology allows to give the trailing edge comb and its spines varying stiffness within the structure.
- the trailing edge comb can be made of casted plastic or cut out and machined from a plate.
- the invention further relates to a wind turbine, comprising a tower, an electrical generator with a rotor shaft and a hub to which wind turbine blades are connected.
- the inventive wind turbine comprises said inventive wind turbine blades.
- fig. 1 is a top view of an inventive wind turbine blade
- fig. 2 is a perspective view of a trailing edge comb
- fig. 3 is a sectional view of an inventive wind turbine blade with several trailing edge combs.
- Fig. 1 is a top view of a wind turbine blade 1 with a blade root 2 by which it is connected to a hub of a rotor, which is part of an electrical generator. Further the wind turbine blade 1 comprises a trailing edge 3, a leading edge 4 and a blade tip 5. At the trailing edge 3 a noise reducing device is attached which is formed as a trailing edge comb 6. Said trailing edge comb 6 is attached in a section ranging from about 75 % to 95 % of the span of the wind turbine blade 1.
- Fig. 2 is a perspective view of the trailing edge comb 6.
- the trailing edge comb 6 comprises of aligned spines 7, whereby each spine has a decreasing
- All spines 7 are arranged in parallel and the size and diameter of the spines 7 can be modified in order to influence and adjust the noise reducing effect. Another factor is the distance between adjacent spines, which is chosen with regard to the aerodynamic and noise reducing effect.
- the outer ends of spines 7 are attached on or close to the trailing edge 3.
- outer ends of spines extend from the trailing edge to the outside so that the spines are only partially disposed on the trailing edge.
- the inner end of spines 7 of trailing edge comb 6 is attached to the trailing edge 3, the opposite outer end of spines 7 extends from the trailing edge 3.
- Fig. 3 is a cross-sectional view and shows a trailing edge comb 8 arranged on the trailing edge 3.
- Trailing edge comb 8 comprises two layers of spines 9, 10 which are stacked above one another.
- the lower layer consisting of spines 9 has larger cross- sections compared to the upper layer of spines 10.
- spines 10 of the upper layer partially cover a space between adjacent spines 9 of the lower layer.
- spines 9, 10 are printed with a 3D printer. Using this production technology several spines with slightly different dimensions and varying stiffness within the
- Spines 9, 10 are made from a plastic material. Other materials are possible, too, for example casted plastic or metal, in particular aluminium or steel .
- the use of the trailing edge comb as noise reducing device significantly improves the emission of noise during rotation of the wind turbine blade. Consequently such wind turbines can be built closer to residential areas.
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
L'invention concerne une pale d'éolienne (1) dotée d'un dispositif de réduction du bruit fixé au niveau de son bord de fuite (3), le dispositif de réduction du bruit comprenant un peigne de bord de fuite (6, 8) comportant de multiples dents alignées (7, 9, 10).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12185966.4 | 2012-09-25 | ||
EP12185966 | 2012-09-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014048581A1 true WO2014048581A1 (fr) | 2014-04-03 |
Family
ID=47716024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2013/052728 WO2014048581A1 (fr) | 2012-09-25 | 2013-02-12 | Pale d'éolienne dotée d'un dispositif de réduction du bruit |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2014048581A1 (fr) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104976075A (zh) * | 2014-04-14 | 2015-10-14 | 西门子公司 | 与风力涡轮机叶片上的后缘特征对准的旋涡发生器 |
WO2015192915A1 (fr) * | 2014-06-18 | 2015-12-23 | Siemens Aktiengesellschaft | Pale de rotor dotée de moyens de réduction du bruit |
WO2015193654A1 (fr) * | 2014-06-16 | 2015-12-23 | Brunel University | Réduction de bruit au niveau du bord de fuite d'un corps fluide dynamique |
US10400744B2 (en) | 2016-04-28 | 2019-09-03 | General Electric Company | Wind turbine blade with noise reducing micro boundary layer energizers |
EP3587799A1 (fr) * | 2018-06-27 | 2020-01-01 | Siemens Gamesa Renewable Energy A/S | Structure aérodynamique |
US10746157B2 (en) | 2018-08-31 | 2020-08-18 | General Electric Company | Noise reducer for a wind turbine rotor blade having a cambered serration |
US11359600B2 (en) | 2018-06-27 | 2022-06-14 | Siemens Gamesa Renewable Energy A/S | Aerodynamic structure |
EP3696402B1 (fr) | 2019-02-18 | 2022-07-20 | LM Wind Power A/S | Réducteur de bruit pour une pale de rotor de turbine éolienne |
WO2023205270A1 (fr) * | 2022-04-20 | 2023-10-26 | National Technology & Engineering Solutions Of Sandia, Llc | Pales d'éolienne ayant des pointes intégrées au système et procédés de fabrication utilisant la fabrication additive |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0652367A1 (fr) | 1993-11-04 | 1995-05-10 | Stork Product Engineering B.V. | Réduction de bruit pour folienne |
EP1314885A1 (fr) | 2001-11-26 | 2003-05-28 | Bonus Energy A/S | Bord de fuite flexible et cranelée pour pale d'éolienne |
WO2008035149A2 (fr) * | 2006-02-23 | 2008-03-27 | Stichting Nationaal Lucht- En Ruimtevaart Laboratorium | Aube de rotor pour éolienne |
US20080166241A1 (en) | 2007-01-04 | 2008-07-10 | Stefan Herr | Wind turbine blade brush |
DE10340978B4 (de) | 2003-09-05 | 2008-09-18 | Moosdorf, Reinhard W. | Kunstfaserelement für Rotorblätter |
US20120134837A1 (en) * | 2011-12-19 | 2012-05-31 | General Electric Company | Noise reducer for rotor blade in wind turbine |
EP2570656A1 (fr) * | 2011-09-19 | 2013-03-20 | Nordex Energy GmbH | Pale de rotor d'éolienne dotée d'un rebord arrière à profil épais |
-
2013
- 2013-02-12 WO PCT/EP2013/052728 patent/WO2014048581A1/fr active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0652367A1 (fr) | 1993-11-04 | 1995-05-10 | Stork Product Engineering B.V. | Réduction de bruit pour folienne |
EP1314885A1 (fr) | 2001-11-26 | 2003-05-28 | Bonus Energy A/S | Bord de fuite flexible et cranelée pour pale d'éolienne |
DE10340978B4 (de) | 2003-09-05 | 2008-09-18 | Moosdorf, Reinhard W. | Kunstfaserelement für Rotorblätter |
WO2008035149A2 (fr) * | 2006-02-23 | 2008-03-27 | Stichting Nationaal Lucht- En Ruimtevaart Laboratorium | Aube de rotor pour éolienne |
US20080166241A1 (en) | 2007-01-04 | 2008-07-10 | Stefan Herr | Wind turbine blade brush |
EP2570656A1 (fr) * | 2011-09-19 | 2013-03-20 | Nordex Energy GmbH | Pale de rotor d'éolienne dotée d'un rebord arrière à profil épais |
US20120134837A1 (en) * | 2011-12-19 | 2012-05-31 | General Electric Company | Noise reducer for rotor blade in wind turbine |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104976075B (zh) * | 2014-04-14 | 2020-04-10 | 西门子歌美飒可再生能源公司 | 与风力涡轮机叶片上的后缘特征对准的旋涡发生器 |
CN104976075A (zh) * | 2014-04-14 | 2015-10-14 | 西门子公司 | 与风力涡轮机叶片上的后缘特征对准的旋涡发生器 |
EP2933475A1 (fr) * | 2014-04-14 | 2015-10-21 | Siemens Aktiengesellschaft | Générateurs de vortex alignés avec des caractéristiques de bord de fuite sur une pale d'éolienne |
US9476406B2 (en) | 2014-04-14 | 2016-10-25 | Siemens Aktiengesellschaft | Vortex generators aligned with trailing edge features on wind turbine blade |
WO2015193654A1 (fr) * | 2014-06-16 | 2015-12-23 | Brunel University | Réduction de bruit au niveau du bord de fuite d'un corps fluide dynamique |
US10900465B2 (en) | 2014-06-16 | 2021-01-26 | Brunel University London | Noise reduction to the trailing edge of fluid dynamic bodies |
WO2015192915A1 (fr) * | 2014-06-18 | 2015-12-23 | Siemens Aktiengesellschaft | Pale de rotor dotée de moyens de réduction du bruit |
US11181093B2 (en) | 2014-06-18 | 2021-11-23 | Siemens Gamesa Renewable Energy A/S | Rotor blade with noise reduction means |
US10400744B2 (en) | 2016-04-28 | 2019-09-03 | General Electric Company | Wind turbine blade with noise reducing micro boundary layer energizers |
EP3587799A1 (fr) * | 2018-06-27 | 2020-01-01 | Siemens Gamesa Renewable Energy A/S | Structure aérodynamique |
CN110645140A (zh) * | 2018-06-27 | 2020-01-03 | 西门子歌美飒可再生能源公司 | 空气动力学结构 |
US11236722B2 (en) | 2018-06-27 | 2022-02-01 | Siemens Gamesa Renewable Energy A/S | Aerodynamic structure |
US11359600B2 (en) | 2018-06-27 | 2022-06-14 | Siemens Gamesa Renewable Energy A/S | Aerodynamic structure |
CN110645140B (zh) * | 2018-06-27 | 2022-10-21 | 西门子歌美飒可再生能源公司 | 空气动力学结构 |
US10746157B2 (en) | 2018-08-31 | 2020-08-18 | General Electric Company | Noise reducer for a wind turbine rotor blade having a cambered serration |
EP3696402B1 (fr) | 2019-02-18 | 2022-07-20 | LM Wind Power A/S | Réducteur de bruit pour une pale de rotor de turbine éolienne |
WO2023205270A1 (fr) * | 2022-04-20 | 2023-10-26 | National Technology & Engineering Solutions Of Sandia, Llc | Pales d'éolienne ayant des pointes intégrées au système et procédés de fabrication utilisant la fabrication additive |
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