WO2015158346A1 - Amortisseur de pales asymétrique - Google Patents

Amortisseur de pales asymétrique Download PDF

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Publication number
WO2015158346A1
WO2015158346A1 PCT/DK2015/050016 DK2015050016W WO2015158346A1 WO 2015158346 A1 WO2015158346 A1 WO 2015158346A1 DK 2015050016 W DK2015050016 W DK 2015050016W WO 2015158346 A1 WO2015158346 A1 WO 2015158346A1
Authority
WO
WIPO (PCT)
Prior art keywords
wind turbine
turbine rotor
blade
blades
specific
Prior art date
Application number
PCT/DK2015/050016
Other languages
English (en)
Inventor
Wout Ruijter
Original Assignee
Envision Energy (Denmark) Aps
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Envision Energy (Denmark) Aps filed Critical Envision Energy (Denmark) Aps
Publication of WO2015158346A1 publication Critical patent/WO2015158346A1/fr

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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
    • 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
    • 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
    • F05B2260/964—Preventing, counteracting or reducing vibration or noise by damping means
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present invention relates to a wind turbine rotor suitable for a modern wind turbine, said wind turbine rotor comprising at least two wind turbine rotor blades, each having a length extending from a first end, e.g. a root end, to a second end, e.g.
  • said wind turbine rotor blade further comprises a leading edge and a trailing edge, where a pressure side and a suction side extend between said leading edge and trailing edge, and thus defines an airfoil shaped cross section, where said wind turbine rotor blades are manufactured at least partly from fibre reinforced resin and thus comprises a laminate of fibres, and where said wind turbine rotor further comprises a hub, ar- ranged at a main shaft, at a nacelle on top of a wind turbine tower, wherein a first wind turbine rotor blade comprises a specific first edgewise resonance frequency configuration, and where at least a second wind turbine rotor blade comprises a specific second edgewise resonance frequency configuration.
  • the invention further relates to a method for damping oscillations in a wind turbine rotor, where said rotor comprises at least two wind turbine blades arranged at a hub as mentioned above, wherein said method comprises arranging at least two wind turbine blades at a wind turbine rotor, where said wind turbine blades each comprise a specific and different set of resonance frequencies.
  • the shape is very important due to several facts. First of all the aerodynamic shape of the rotor blade plays a big role in the efficiency of the rotor blade or if the rotor com- prises a number of rotor blades. A more efficient blade profile increases the potential power production of the wind turbine. Another challenge when designing and producing wind turbine rotor blades is vibrations or oscillations due to the blades eigenfrequency also called the resonance frequency or e.g. the first, second or third natural frequency. Oscillations in the flapwise direction of a wind turbine blade are not seen as a cause of many damages due to high damping in this direction, but oscillations in the edgewise direction are much more severe, as this may cause cracks to propagate in the blade structure.
  • the trailing edge is normally preferred to be thin, and at other locations along the circumference of a wind turbine blade the rotor blade needs to have rather stiff and solid areas, and at other locations the thickness and stiffness need to have even other values in order to be able to handle the wind acting on the rotor blade, and in order to handle any side effects of the complete wind turbine being used.
  • a typical wind turbine rotor blade comprises a leading edge, a trailing edge, a suction side and a pressure side. On the suction and pressure side there will typically be arranged some kind of main structure also called a main laminate or a spar cap. And also at the leading edge there will typically be some kind of more solid laminates as well as along the trailing edge.
  • a typical wind turbine blade will comprise sandwich constructions comprising lightweight materials arranged between skin layers of relatively thin fibre composite.
  • Wind farms often comprise multiple wind turbines with rotor blades having similar airfoil and similar length.
  • Such rotor blades can be manufactured using the same mould, however tolerances and inconsistencies in the manufacturing process mean that the weight distribution and total weight will vary from blade to blade. The blades are thus either matched in pairs according to their weight distribution or balanced for each rotor to avoid any mismatches.
  • Blades manufactured according to these inventions are similar and address oscillations in the rotor via means arranged in the individual and similar blades or by operating one or more individual and similar blades.
  • the invention relates to a wind turbine rotor suitable for a modern wind turbine, said wind turbine rotor comprising at least two wind turbine rotor blades, each having a length extending from a first end, e.g. a root end, to a second end, e.g.
  • said wind turbine rotor blade further comprises a leading edge and a trailing edge, where a pressure side and a suction side extend between said leading edge and trailing edge, and thus defines an airfoil shaped cross section, where said wind turbine rotor blades are manufactured at last partly from fibre reinforced resin and thus comprises a laminate of fibres, and where said wind turbine rotor further comprises a hub, arranged at a main shaft, at a nacelle on top of a wind turbine tower.
  • a first wind turbine rotor blade comprises a specific first edgewise resonance frequency configuration, and where at least a second wind turbine rotor blade comprises a specific second edgewise resonance frequency configuration.
  • This will remove symmetry from the wind turbine rotor as the resonance frequency is different from a first blade to a second blade.
  • the second blade At a first edgewise resonance frequency, the second blade will act as a damper, and at a specific second edgewise resonance frequency, the first blade will act as a damper.
  • one blade will always act as a damper in relation to a second or even in relation to a third blade.
  • a wind turbine blade according to the invention comprises a rotor damping method for damping oscillations, where the damping is provided by a designed mismatch in the frequency of the blades comprised in the rotor. It is thus the wind turbine rotor as a unit that acts as a passive damper and not a damping achieved by operating an individual blade or by similar means in two or more blades.
  • the problem solved by this invention concerns in particular edgewise oscillations of the blade in the rotational plane of a rotor on which two or more blades are installed.
  • the oscillations addressed here are mainly oscillations/vibrations that do not couple to torque on the main shaft of the wind turbine. Edgewise oscillations are considered more critical due to low aerodynamic damping.
  • Standstill and operation vibrations/oscillations may cause damage, in particular in the trailing edge area of the wind turbine blade.
  • the trailing edge area is generally seen as sensitive due to the presence of a glue line between two shell parts, a relatively high curvature, a twist of the blade, and a thin and stiff laminate, due to the use of unidirectional (UD) fibre mats in this area.
  • UD unidirectional
  • the damper system in the blade or blades of a rotor may be tuned to dampen different types of oscillations in the blade and thus in the rotor.
  • the oscillations may be caused by matching of the blade frequency with (a multiple of) the tower passing frequency.
  • the term frequency should be understood as an eigenfrequency, a resonance frequency, a first, second or even a third natural frequency, and especially in the edgewise direction as it is most interesting to avoid or at least dampen oscillations in the edgewise direction as such oscillations may cause cracks or at least reduce the lifetime of the blades.
  • Using a wind turbine rotor according to the invention will allow optimum production of the wind turbine even though a resonance frequency is passed, as no physical adjustment of any blades are needed as if e.g. the pitch angle were changed.
  • the wind turbine can actually be operated at any conditions without having problems with oscil- lations as the rotor, as a unit, automatically dampens such oscillations before they even become a problem.
  • one of the advantages by the present invention is that the blades will never be able to oscillate at the same frequency, and thus there will be no coupling between oscillation in one blade and in another blade. This is due to the fact that the blades do not have the same stiffness/weight distribution and thus has its own resonance frequency.
  • At least one of the first and second specific resonance frequencies is tuned into a specific frequency band by one or more weight elements arranged in that wind turbine rotor blade in a first set of positions. This allows at least one of the blades to be tuned into a resonance frequency band while other blades and thus the resonance frequency bands thereof may remain unchanged.
  • the first and second specific resonance edgewise frequencies are tuned into specific and different frequency bands by one or more weight elements arranged in the first wind turbine rotor blade in a first set of positions, and by one or more weight elements arranged in the second wind turbine rotor blade in a second set of positions.
  • a wind turbine rotor, and the dampening effect of such a rotor, according to the invention can be obtained by operating several different parameters, and the invention may also be obtained by carefully adjusting one or more structural elements.
  • Said structural elements are located in at least one of the blades and comprise at least one of the following:
  • a rotor according to the invention By adding stiffness to e.g. a first blade in relation to a second blade, a rotor according to the invention is provided. This can be taken care of by adding extra layers to the laminate at special locations which will change the stiffness and/or weight of the rotor blade and thus also change the edgewise resonance frequency. This can be done by placing the laminate in e.g. the trailing edge in an offset position and/or by using fibre mats with a different stiffness or orientation of fibres. It is e.g. possible to use fibres made from E-glass, S-glass, C-glass, carbon, basalt or other types of fibres or combinations thereof that possesses different properties and thus also provides a wind turbine blade with another behaviour/resonance frequency.
  • Tuning the blades into different frequency bands can also be obtained by twisting the structural parts in the first blade in relation to the second blade about e.g. a central axis along the blade.
  • the main laminate, spar cap or other areas of a blade can be arranged offset in relation to another blade e.g. an offset of 50 millimetres of one or more of the structural areas. By such an offset the frequency will be different in one blade compared to another blade. The overall visual and aerodynamic appearance and function will however be unchanged.
  • weight elements may comprise at least one of the following:
  • the frequency of a wind turbine blade can be designed by using added one or more masses, e.g. weight elements, to the blade at specific locations, e.g. at the root end and at the tip end.
  • One blade of a two bladed rotor may comprise extra layers of fibre mats and the other blade may be fitted with one or more weight elements in order to bal- ance the two blades, where the blades still has different resonance frequencies.
  • the one blade may also be fitted with one or more weight elements instead of extra layers of fibre mats.
  • the masses added to each of the blades may have the same total weight, but said masses may be arranged at different positions in each blade.
  • a wind turbine rotor according to the invention may comprise two wind turbine rotor blades, where each wind turbine rotor blade is a partial pitch blade comprising an inner blade part and an outer blade part, where said inner and outer blade parts are interconnected by a pitch bearing system. Only the inner blade part or the outer blade part or both blade parts may be designed and constructed with a specific build up that has a unique resonance frequency in the edgewise direction.
  • One possible way of adding weight elements to a blade may be to arrange weight elements at the pitch system since such weight elements are easily arranged at the structural parts in the blade. The use of weight elements also allows for an easy balancing of the rotor and thus the wind turbine blades.
  • a wind turbine rotor according to the invention may comprise at least two wind turbine rotor blades, where each wind turbine rotor blade may comprise a pitch system arranged between the wind turbine rotor blade and the hub of said wind turbine rotor.
  • the invention can, in other words, also be used on wind turbines using traditional pitch blades.
  • said wind turbine rotor blades have a similar airfoil shaped cross section along the wind turbine blades at similar distance from the first end of the wind turbine rotor blades. There is thus no aerodynamic difference between the blades even though the edgewise resonance frequency is different to a sufficient extend in order to prevent the blades from having overlapping frequencies.
  • the invention further comprises a method for damping oscillations in a wind turbine rotor, where said rotor comprises at least two wind turbine blades arranged at a hub as described above.
  • Said method may comprise arranging at least two wind turbine blades at a wind turbine rotor, where said wind turbine blades each comprises a specific and different set of resonance frequencies. This will remove symmetry from the wind turbine rotor as the resonance frequency is different from one blade to a second blade. At a first edgewise resonance frequency, the second blade will act as a damper, and at a specific second edgewise resonance frequency, the first blade will act as a damper.
  • Said method according to the invention may further comprise at least the steps of: - arranging a specific resonance frequency configuration in a specific wind turbine rotor blade after manufacturing of said wind turbine rotor blade,
  • first wind turbine rotor blade having a specific resonance frequency configuration with at least a second wind turbine rotor blade having another specific resonance frequency configuration.
  • the blades as described here may also be manufactured in identical moulds, where a first blade after de-moulding is fitted with a specific set of resonance frequency dependent means, e.g. weight elements made from lead, steel, heavy rubber compounds or other suitable material, and where a second blade is fitted with similar weight ele- ments but arranged differently in order to have a different frequency.
  • a set of blades e.g. two blades or three blades, may be paired after production and fitment in order to provide a set of blades having different edgewise resonance frequencies.
  • said method may fur- ther comprise at least the steps of:
  • the blades as described here may be manufactured in identical moulds, where a first blade comprises a specific set of resonance frequency dependent means, e.g. fibre mats made from a type of fibres different from fibres used in a second and otherwise identical blade.
  • weight elements may be arranged at predetermined locations in the blade, e.g. the laminate, during manufacturing. The weight elements and/or structural elements are then integrated into the blade, while maintain- ing the outer aerodynamic profile of the blade.
  • a set of blades e.g. two blades or three blades, may be paired after production in order to provide a set of blades having different edgewise resonance frequencies.
  • said method fur- ther comprises at least the step of:
  • the blades as described here may further be balanced after production to provide a balanced rotor during operation.
  • Each blade may be weighed, e.g. at the root and at the tip, and the required additional mass for each blade may be calculated based the differences in the weight distribution.
  • the masses may then be arranged in the blades at strategically locations, e.g. the root, the tip or the pitch system.
  • said step of arranging a specific resonance frequency configuration and said step of balancing comprise arranging one or more weight elements in at least one of the first and second wind turbine rotor blades.
  • the wind turbine rotor as described herein may advantagely be balanced in regards to the weight distribution and tuned to different resonance frequencies at the same time. This may be done by placing and arranging weight elements/masses at predetermined locations in at least one of the blades, optionally in all the blades. Altering the position of at least one of the weight elements in one blade relative to another blade, e.g. by offsetting the position along the longitudinal length or the chord length of the blade, means that the edgewise resonance frequency of each blade can be tuned into a specific frequency band, while altering the weight distribution of the blade.
  • Fig. 1 shows a wind turbine with three full pitch blades.
  • Fig. 2 shows a wind turbine with two partial pitch blades.
  • Fig. 3 shows a wind turbine blade oscillating in the flapwise direction.
  • Fig. 4 shows a wind turbine blade oscillating in the edgewise direction.
  • Fig. 5 shows a first cross section of a wind turbine rotor blade.
  • Fig. 6 shows a second cross section of a wind turbine rotor blade.
  • Fig. 7 shows a third cross section of a wind turbine rotor blade.
  • Fig. 8 shows a fourth cross section of a wind turbine rotor blade.
  • Fig. 9 shows a fifth cross section of a wind turbine rotor blade.
  • Fig. 10 shows a wind turbine with three rotor blades having an individual frequency
  • Fig. 11 shows a wind turbine with two rotor blades having an individual frequency
  • a typical wind turbine 1 comprising a tower 2 installed at a foundation 3.
  • a nacelle 4 comprising e.g. a gearbox, a generator and other components is seen.
  • a shaft for carrying a rotor comprising a hub 5 and three wind turbine rotor blades 6.
  • the rotor blades 6 are arranged at the hub 5 at a first end 7 called the root end of the rotor blade 6.
  • the second end 8 of the rotor blades 6 constitutes a tip end.
  • Fig. 2 shows another type of wind turbine 1, namely a partial pitch wind turbine. Also this type comprises a tower 2 installed at a foundation 3.
  • a nacelle 3 comprising e.g. a gearbox, a generator and other components is seen.
  • a shaft for carrying a rotor comprising a hub 5 and two wind turbine rotor blades 6.
  • the rotor blades 6 are arranged at the hub 5 at a first end 7 called the root end of the rotor blade 6.
  • the second end 8 of the rotor blades 6 constitutes a tip end.
  • the blades 6 comprise an inner blade part 9 and an outer blade part 10.
  • a pitch bearing system that allows the outer blade part 10 to be pitched in relation to the inner blade part 9.
  • Fig. 3 and 4 shows a wind turbine blade 6 as seen in fig. 1 but the figures may also be understood as showing the outer blade part 10 as seen in fig. 2.
  • the blade 6 comprises a leading edge 13, a trailing edge 14, a pressure side 15 and a suction side 16.
  • fig. 3 the blade 6 is depicted with the tip end 8 oscillating - drawn with the dotted lines - in the flapwise direction 11.
  • fig. 4 the blade 6 is depicted with the tip end 8 oscillating - drawn with the dotted lines - in the edgewise direction 12.
  • Fig. 5 to 9 shows cross sections of a wind turbine rotor blade 6 with a leading edge 13 and a trailing edge 14 connected by a pressure side 15 and a suction side 16 of the specific air foil profile. Both the leading edge 13 and the trailing edge 14 are depicted as an area behind a line as the terms "leading edge 13" and “trailing edge 14" more or less refer to an area and not a well-defined line.
  • Fig. 5 and 6 show the same overall cross section, but structural parts/weights 17 are placed in a rotated position in relation to each other. These figures only serve as a theoretical example of how the invention works and here the structural parts/weights 17 are rotated approximately 45 degrees about the central axis 18 of the blade 6. In fig.
  • FIG. 7 and 8 another example is seen where structural parts/weights 17 in fig. 7 are arranged near the trailing edge 14 along the pressure side 15 and along the suction side 16, and in fig. 8 the structural parts/weights are arranged at a larger distance to the trailing edge 14.
  • Fig. 9 shows yet another variant of a blade 6 according to the invention, where structural parts/weights 17 are arranged at the trailing edge 14 on the suction side 16 and at the leading edge 13.
  • Figs. 5 to 9 all shows examples of how aerodynamically identical individual blades 6 can be designed in order to have different resonance frequencies, that, when installed at a hub 5 on a wind turbine 1, will act as a damper of especially edgewise oscillations.
  • a pair of blades according to fig. 5 and 6 or according to fig 7 and 8 will work perfect as a set of blades 6 as seen on the wind turbine 1 in fig. 2.
  • the blades 6 could comprise e.g. blades as seen in fig. 5, 6 and 7, or as seen in fig. 5, 7 and 9 or in any other combination as long as the resonance frequency of each blade is different compared to the other blades. Furthermore, the difference need to be sufficient in order not to prevent overlapping of the frequency of one of the other blades 6.
  • Fig. 10 shows a wind turbine as also seen in fig 1, where one blade 6' is seen with no extra structural parts/weights 17, a second blade 6" is seen with a single structural parts/weight 17, and where a third blade 6"' is seen with two extra structural parts/weights 17. This will cause the blades to have different resonance frequency and thus any edgewise oscillations will be dampened.
  • fig. 11 shows a wind turbine as also seen in fig 2, where one blade 6' is seen with a single extra structural parts/weight 17 and a second blade 6" is seen with two extra structural parts/weights 17. This will also cause the blades to have different resonance frequency, and thus any edgewise oscillations will be dampened.

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  • 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)
  • Wind Motors (AREA)

Abstract

L'invention porte sur un amortisseur de pales asymétrique. L'invention concerne un rotor de turbine éolienne approprié pour une turbine éolienne moderne, lequel rotor de turbine éolienne comprend au moins deux pales de rotor de turbine éolienne, ayant chacune une longueur s'étendant à partir d'une première extrémité, par exemple une extrémité de racine, jusqu'à une seconde extrémité, par exemple une extrémité de pointe, ladite pale de rotor de turbine éolienne comprenant de plus un bord d'attaque et un bord de fuite, un intrados et un extrados s'étendant entre ledit bord d'attaque et ledit bord de fuite, et définissant ainsi une section transversale en forme de profil aérodynamique, lesdites pales de rotor de turbine éolienne étant fabriquées au moins partiellement à partir de résine renforcée par des fibres, et comprenant ainsi un stratifié de fibres, et lequel rotor de turbine éolienne comprend de plus un moyeu, disposé au niveau d'un arbre principal, dans une nacelle au sommet d'une tour de turbine éolienne. L'invention porte également sur un procédé pour amortir des oscillations dans un rotor de turbine éolienne, ledit rotor comprenant au moins deux pales de turbine éolienne disposées au niveau d'un moyeu comme mentionné ci-dessus.
PCT/DK2015/050016 2014-04-14 2015-01-22 Amortisseur de pales asymétrique WO2015158346A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA201470215 2014-04-14
DKPA201470215 2014-04-14

Publications (1)

Publication Number Publication Date
WO2015158346A1 true WO2015158346A1 (fr) 2015-10-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107829885A (zh) * 2017-10-25 2018-03-23 西安锐益达风电技术有限公司 一种考虑环境参数修正的风力发电机叶片振动监测及系统

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999043955A1 (fr) * 1998-02-24 1999-09-02 Lm Glasfiber A/S Pale d'eolienne
EP0955461A2 (fr) * 1998-05-04 1999-11-10 Husumer Schiffswerft Inh. Gebrüder Kröger GmbH & Co.KG Pales de rotor pour éolienne
EP1783366A1 (fr) * 2005-11-04 2007-05-09 Daubner & Stommel GbR Bau-Werk-Planung Eolienne
CA2553896A1 (fr) * 2006-07-28 2008-01-28 Sharolyn Vettese Accessoire d'equilibrage des aubes d'eolienne horizontale
WO2010022739A2 (fr) * 2008-08-29 2010-03-04 Vestas Wind Systems A/S Générateur d’éolienne comprenant un rotor ayant des propriétés d’absorption de vibrations
EP2357356A2 (fr) * 2010-02-01 2011-08-17 Wölfel Beratende Ingenieure GmbH & Co. KG Pale de rotor pour une éolienne et procédé d'amortissement d'oscillations d'une pale de rotor
WO2012059381A2 (fr) * 2010-11-03 2012-05-10 Siemens Aktiengesellschaft Système et procédé d'amortissement de mouvement d'éolienne

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999043955A1 (fr) * 1998-02-24 1999-09-02 Lm Glasfiber A/S Pale d'eolienne
EP0955461A2 (fr) * 1998-05-04 1999-11-10 Husumer Schiffswerft Inh. Gebrüder Kröger GmbH & Co.KG Pales de rotor pour éolienne
EP1783366A1 (fr) * 2005-11-04 2007-05-09 Daubner & Stommel GbR Bau-Werk-Planung Eolienne
CA2553896A1 (fr) * 2006-07-28 2008-01-28 Sharolyn Vettese Accessoire d'equilibrage des aubes d'eolienne horizontale
WO2010022739A2 (fr) * 2008-08-29 2010-03-04 Vestas Wind Systems A/S Générateur d’éolienne comprenant un rotor ayant des propriétés d’absorption de vibrations
EP2357356A2 (fr) * 2010-02-01 2011-08-17 Wölfel Beratende Ingenieure GmbH & Co. KG Pale de rotor pour une éolienne et procédé d'amortissement d'oscillations d'une pale de rotor
WO2012059381A2 (fr) * 2010-11-03 2012-05-10 Siemens Aktiengesellschaft Système et procédé d'amortissement de mouvement d'éolienne

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107829885A (zh) * 2017-10-25 2018-03-23 西安锐益达风电技术有限公司 一种考虑环境参数修正的风力发电机叶片振动监测及系统
CN107829885B (zh) * 2017-10-25 2020-04-07 西安锐益达风电技术有限公司 一种考虑环境参数修正的风力发电机叶片振动监测及系统

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