PL1952017T3 - Sposób tłumienia drgań wieży w instalacji turbiny wiatrowej - Google Patents

Sposób tłumienia drgań wieży w instalacji turbiny wiatrowej

Info

Publication number
PL1952017T3
PL1952017T3 PL06812802T PL06812802T PL1952017T3 PL 1952017 T3 PL1952017 T3 PL 1952017T3 PL 06812802 T PL06812802 T PL 06812802T PL 06812802 T PL06812802 T PL 06812802T PL 1952017 T3 PL1952017 T3 PL 1952017T3
Authority
PL
Poland
Prior art keywords
wind turbine
turbine installation
damping tower
tower vibrations
vibrations
Prior art date
Application number
PL06812802T
Other languages
English (en)
Inventor
Finn Gunnar Nielsen
Bjørn Skaare
John Olav Giæver Tande
Ian Norheim
Kjetil Uhlen
Original Assignee
Hywind As
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 Hywind As filed Critical Hywind As
Publication of PL1952017T3 publication Critical patent/PL1952017T3/pl

Links

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
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/0296—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor to prevent, counteract or reduce noise emissions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • 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
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/022—Adjusting aerodynamic properties of the blades
    • F03D7/0224—Adjusting blade pitch
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/022—Adjusting aerodynamic properties of the blades
    • F03D7/024—Adjusting aerodynamic properties of the blades of individual 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
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/04—Automatic control; Regulation
    • F03D7/042—Automatic control; Regulation by means of an electrical or electronic controller
    • F03D7/043—Automatic control; Regulation by means of an electrical or electronic controller characterised by the type of control logic
    • F03D7/044—Automatic control; Regulation by means of an electrical or electronic controller characterised by the type of control logic with PID control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • F03D9/255—Wind motors characterised by the driven apparatus the apparatus being an electrical generator connected to electrical distribution networks; Arrangements therefor
    • 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
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/93—Mounting on supporting structures or systems on a structure floating on a liquid surface
    • 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
    • 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
    • Y02E10/727—Offshore wind turbines
PL06812802T 2005-11-01 2006-10-30 Sposób tłumienia drgań wieży w instalacji turbiny wiatrowej PL1952017T3 (pl)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO20055118A NO325856B1 (no) 2005-11-01 2005-11-01 Fremgangsmåte for demping av ustabile frie stivlegeme egensvingninger ved en flytende vindturbininstallasjon
EP06812802.4A EP1952017B1 (en) 2005-11-01 2006-10-30 A method for damping tower vibrations in a wind turbine installation
PCT/NO2006/000385 WO2007053031A1 (en) 2005-11-01 2006-10-30 A method for damping tower vibrations in a wind turbine installation

Publications (1)

Publication Number Publication Date
PL1952017T3 true PL1952017T3 (pl) 2016-04-29

Family

ID=35432892

Family Applications (1)

Application Number Title Priority Date Filing Date
PL06812802T PL1952017T3 (pl) 2005-11-01 2006-10-30 Sposób tłumienia drgań wieży w instalacji turbiny wiatrowej

Country Status (11)

Country Link
US (1) US8186949B2 (pl)
EP (1) EP1952017B1 (pl)
JP (1) JP2009513881A (pl)
CN (2) CN102943743B (pl)
BR (1) BRPI0618151B1 (pl)
CA (1) CA2627148C (pl)
ES (1) ES2560504T3 (pl)
HK (1) HK1182160A1 (pl)
NO (1) NO325856B1 (pl)
PL (1) PL1952017T3 (pl)
WO (1) WO2007053031A1 (pl)

Families Citing this family (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004013131A1 (de) * 2004-03-17 2005-10-06 Siemens Ag Windkraftanlage
MX2008011751A (es) * 2006-03-16 2008-11-12 Vestas Wind Sys As Metodo y sistema de control para reducir las cargas de fatiga en los componentes de una turbina eolica sometida a cargas asimentricas en el plano del rotor.
WO2008000265A1 (en) * 2006-06-30 2008-01-03 Vestas Wind Systems A/S A wind turbine tower and a control system and method for altering the eigenfrequency of a wind turbine tower
NO335851B1 (no) * 2006-08-22 2015-03-09 Hywind As Fremgangsmåte ved vindturbininstallasjon for demping av tårnsvingninger
MX2009006956A (es) * 2006-12-28 2009-07-09 Clipper Windpower Technology Amortiguado de movimiento resonante de torre para turbina de viento y movimiento de aspa simetrico utilizando metodos de estimacion.
CN101720387B (zh) * 2007-03-30 2014-01-08 维斯塔斯风力系统有限公司 具有被布置为减小其部件上的缩短寿命的负荷的桨距控制的风力涡轮机
ES2552162T5 (es) 2007-11-26 2020-03-02 Siemens Ag Método de amortiguación de vibraciones de torre de una turbina eólica y sistema de control de inclinación
DE102007063082B4 (de) 2007-12-21 2010-12-09 Repower Systems Ag Verfahren zum Betreiben einer Windenergieanlage
US8277185B2 (en) * 2007-12-28 2012-10-02 General Electric Company Wind turbine, wind turbine controller and method for controlling a wind turbine
US8004100B2 (en) * 2008-03-14 2011-08-23 General Electric Company Model based wind turbine drive train vibration damper
DK2107236T3 (en) 2008-04-02 2015-02-02 Siemens Ag Method for attenuating tower vibration of a wind turbine and wind turbine control system
EP2123906A1 (en) 2008-05-21 2009-11-25 Siemens Aktiengesellschaft Method and apparatus for damping tower oscillation in a wind turbine
ATE530765T1 (de) * 2008-07-16 2011-11-15 Siemens Ag Verfahren und anordnung zur dämpfung von turmschwingungen
GB2466649B (en) 2008-12-30 2014-01-29 Hywind As Blade pitch control in a wind turbine installation
ES2607118T3 (es) * 2009-02-27 2017-03-29 Acciona Windpower S.A. Método de control de turbina eólica para amortiguar las vibraciones
GB0907132D0 (en) 2009-04-24 2009-06-03 Statoilhydro Asa Wave energy extraction
US20100310376A1 (en) * 2009-06-09 2010-12-09 Houvener Robert C Hydrokinetic Energy Transfer Device and Method
US8207625B1 (en) 2009-09-28 2012-06-26 Constantine Gus Cristo Electrical power generating arrangement
JP5101689B2 (ja) * 2010-01-27 2012-12-19 三菱重工業株式会社 風力発電装置及び風力発電装置のヨー旋回制御方法
US8022566B2 (en) * 2010-06-23 2011-09-20 General Electric Company Methods and systems for operating a wind turbine
DE102010041508A1 (de) * 2010-09-28 2012-03-29 Repower Systems Se Drehzahlanpassung einer Windenergieanlage
DK2463517T3 (da) * 2010-12-08 2014-07-21 Siemens Ag Fremgangsmåde og styresystem til at reducere vibrationer af et vindenergianlæg
US8215896B2 (en) * 2010-12-20 2012-07-10 General Electric Company Apparatus and method for operation of an off-shore wind turbine
US8169098B2 (en) * 2010-12-22 2012-05-01 General Electric Company Wind turbine and operating same
EP2479426B1 (en) * 2011-01-24 2017-06-28 Siemens Aktiengesellschaft Method for determining a pitch angle offset signal and for controlling a rotor frequency of a wind turbine for speed avoidance control
JP6187935B2 (ja) * 2011-11-04 2017-08-30 国立研究開発法人 海上・港湾・航空技術研究所 浮体式洋上風力発電施設の制御装置
US20120133134A1 (en) * 2011-11-15 2012-05-31 General Electric Company Method and apparatus for damping vibrations in a wind energy system
ES2407955B1 (es) 2011-12-12 2014-05-08 Acciona Windpower, S.A. Procedimiento de control de un aerogenerador
US9644606B2 (en) * 2012-06-29 2017-05-09 General Electric Company Systems and methods to reduce tower oscillations in a wind turbine
GB201223088D0 (en) * 2012-12-20 2013-02-06 Statoil Asa Controlling motions of floating wind turbines
DK2924280T3 (en) 2012-12-27 2017-01-30 Mhi Vestas Offshore Wind As METHOD AND DEVICE FOR CONTROL OF DEVICE FOR GENERATION OF WINDOW ELECTRICITY ON A LIQUID BODY AND DEVICE FOR GENERATION OF WINDOW ELECTRICITY ON A LIQUID BODY
CN103244349B (zh) * 2013-04-24 2015-04-01 北京金风科创风电设备有限公司 风机塔架振动抑制系统和提高风机切出风速的控制系统
JP6388759B2 (ja) * 2013-05-29 2018-09-12 エムエイチアイ ヴェスタス オフショア ウィンド エー／エス 浮体式風力発電装置
CN105452651A (zh) * 2013-05-30 2016-03-30 菱重维斯塔斯海上风力有限公司 浮式风力涡轮机的倾斜阻尼器
CN103334876B (zh) * 2013-07-16 2015-04-01 北京金风科创风电设备有限公司 风机叶片在叶轮旋转平面的三阶频率振动抑制系统及方法
CN103541861B (zh) * 2013-10-30 2016-02-24 新疆金风科技股份有限公司 浮动式风电机组塔架负阻尼抑制系统和方法
US10145361B2 (en) 2013-11-25 2018-12-04 General Electric Company Methods and systems to shut down a wind turbine
WO2015086024A1 (en) 2013-12-09 2015-06-18 Vestas Wind Systems A/S Operating method for a wind turbine
WO2016023556A1 (en) * 2014-08-13 2016-02-18 Vestas Wind Systems A/S Improvements relating to the determination of rotor imbalances in a wind turbine
DK179069B1 (en) * 2015-09-04 2017-10-02 Envision Energy Denmark Aps A wind turbine and a method of operating a wind turbine with a rotational speed exclusion zone
JP6506664B2 (ja) * 2015-09-10 2019-04-24 株式会社日立製作所 風力発電システムまたは風力発電システムの制御方法
CN105604790B (zh) * 2015-12-29 2018-05-04 北京天诚同创电气有限公司 风电机组及其稳定控制装置与方法
WO2019114908A1 (en) * 2017-12-14 2019-06-20 Vestas Wind Systems A/S Tower damping in wind turbine power production
DE102018005134A1 (de) 2018-06-28 2020-01-02 Senvion Gmbh Verfahren und Steuerung zum Betreiben einer Windenergieanlage
US11635062B2 (en) 2018-11-07 2023-04-25 General Electric Renovables Espana, S.L. Wind turbine and method to determine modal characteristics of the wind turbine in a continuous manner
US11208986B2 (en) 2019-06-27 2021-12-28 Uptake Technologies, Inc. Computer system and method for detecting irregular yaw activity at a wind turbine
US10975841B2 (en) * 2019-08-02 2021-04-13 Uptake Technologies, Inc. Computer system and method for detecting rotor imbalance at a wind turbine
ES2812374B2 (es) * 2019-09-16 2022-02-17 Esteyco S A Procedimiento de control de un aerogenerador de torre mar adentro de tipo flotante, asi como el sistema y el aerogenerador que incorporan este procedimiento
CN111396249B (zh) * 2020-03-31 2022-08-30 新疆金风科技股份有限公司 在阵风风况下降低塔架的载荷的方法及装置
EP4063643A1 (en) 2021-03-22 2022-09-28 Siemens Gamesa Renewable Energy A/S Method and device of controlling an operation of a floating wind turbine
CN116505598B (zh) * 2023-06-26 2023-09-15 湖南大学 一种风电机群服役质量动态调控方法及系统

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5817884A (ja) 1981-07-23 1983-02-02 Ebara Infilco Co Ltd 復水処理方法
US4435647A (en) * 1982-04-02 1984-03-06 United Technologies Corporation Predicted motion wind turbine tower damping
US4420692A (en) * 1982-04-02 1983-12-13 United Technologies Corporation Motion responsive wind turbine tower damping
US4515525A (en) * 1982-11-08 1985-05-07 United Technologies Corporation Minimization of the effects of yaw oscillations in wind turbines
DE19731918B4 (de) 1997-07-25 2005-12-22 Wobben, Aloys, Dipl.-Ing. Windenergieanlage
EP1045988B1 (en) * 1998-01-14 2002-06-19 Dancontrol Engineering A/S Detecting and controlling oscillations in a wind turbine
DE10016912C1 (de) * 2000-04-05 2001-12-13 Aerodyn Eng Gmbh Turmeigenfrequenzabhängige Betriebsführung von Offshore-Windenergieanlagen
DE10106208C2 (de) * 2001-02-10 2002-12-19 Aloys Wobben Windenergieanlage
DE10113038C2 (de) * 2001-03-17 2003-04-10 Aloys Wobben Turmschwingungsüberwachung
WO2003004869A1 (en) * 2001-07-06 2003-01-16 Vestas Wind Systems A/S Offshore wind turbine with floating foundation
JP2003113769A (ja) * 2001-10-03 2003-04-18 Mitsubishi Heavy Ind Ltd ブレードピッチ角度制御装置および風力発電装置
US6888262B2 (en) * 2003-02-03 2005-05-03 General Electric Company Method and apparatus for wind turbine rotor load control
NO20033807D0 (no) 2003-08-27 2003-08-27 Norsk Hydro As Vindmölle for anvendelse offshore
CN100400861C (zh) * 2004-02-27 2008-07-09 三菱重工业株式会社 风力发电装置及其主动式减振方法以及风车塔架
NO20041208L (no) * 2004-03-22 2005-09-23 Sway As Fremgangsmate for reduskjon av aksialkraftvariasjoner for rotor samt retningskontroll for vindkraft med aktiv pitchregulering
US7317260B2 (en) * 2004-05-11 2008-01-08 Clipper Windpower Technology, Inc. Wind flow estimation and tracking using tower dynamics
WO2006056828A1 (en) 2004-11-29 2006-06-01 Thierry Navarro Volumetric pump with reciprocated and rotated piston
NO20052704L (no) * 2005-06-06 2006-12-07 Norsk Hydro As Flytende vindturbininstallasjon.
ES2341469T3 (es) * 2005-07-18 2010-06-21 Clipper Windpower, Inc. Estimacion y seguimiento de flujos de viento utilizando la dinamica de torre.
MX2009006956A (es) * 2006-12-28 2009-07-09 Clipper Windpower Technology Amortiguado de movimiento resonante de torre para turbina de viento y movimiento de aspa simetrico utilizando metodos de estimacion.

Also Published As

Publication number Publication date
BRPI0618151A8 (pt) 2018-04-03
EP1952017B1 (en) 2015-12-09
CN101300422B (zh) 2012-11-07
CN102943743A (zh) 2013-02-27
NO20055118D0 (no) 2005-11-01
ES2560504T3 (es) 2016-02-19
JP2009513881A (ja) 2009-04-02
WO2007053031A1 (en) 2007-05-10
CN101300422A (zh) 2008-11-05
BRPI0618151A2 (pt) 2012-02-28
NO20055118L (no) 2007-05-02
NO325856B1 (no) 2008-08-04
US8186949B2 (en) 2012-05-29
BRPI0618151B1 (pt) 2019-01-02
CA2627148C (en) 2012-08-07
US20080260514A1 (en) 2008-10-23
HK1182160A1 (en) 2013-11-22
EP1952017A1 (en) 2008-08-06
EP1952017A4 (en) 2012-05-02
CA2627148A1 (en) 2007-05-10
CN102943743B (zh) 2014-10-15

Similar Documents

Publication Publication Date Title
HK1182160A1 (en) A method for damping tower vibrations in a wind turbine installation
EP2054620A4 (en) METHOD FOR DAMPING TOWER OSCILLATIONS IN WIND TURF FACILITIES
PL1735533T3 (pl) Sposób wznoszenia wieży, jak również elektrownia wiatrowa
DK1972781T3 (da) Vibrationsdæmpning til et vindenergianlæg
GB2428748B (en) Method Of Operating A Wind Turbine
PL1658408T3 (pl) Wieża do elektrowni wiatrowej
GB0521129D0 (en) A wind turbine
EP1888917A4 (en) WIND TURBINES WITH VERTICAL AXIS
GB2445881B (en) A lighter than air wind turbine arrangement
ZA200809217B (en) Rotor blade for a wind energy installation
PL1961957T3 (pl) Sposób utrzymania komponentów turbiny wiatrowej oraz turbina obejmująca komponenty odpowiednie do utrzymania
PL1891328T3 (pl) Pływająca instalacja turbiny wiatrowej
ZA200709179B (en) Rotor for wind turbine
EP2102493A4 (en) WIND TURBINE DEVICE
EP2302137A4 (en) SUPPORTING ELEMENT FOR AN OFFSHORE WIND TURBINE, MANUFACTURING METHOD AND INSTALLATION METHOD THEREFOR
EP2161394A4 (en) LATTICE PYLON AND METHOD OF ERECTING A WIND TURBINE WITH A TRELLIS PYLON
EP1900939A4 (en) WIND TURBINE
EP1931876A4 (en) WIND TURBINE
EP1834087A4 (en) DIFFUSER IMPROVED WIND TURBINE
GB0407079D0 (en) Wind turbine
GB2440946B (en) Alternative wind turbine
GB0416775D0 (en) Wind turbines
GB0701041D0 (en) Vertical wind turbine
GB0425441D0 (en) Vertical axis wind turbine apparatus
GB0606356D0 (en) Wind turbine blade mounting arrangement