WO2011039777A3 - System for controlling cone and pitch angle of a rotor blade assembly of a wind turbine - Google Patents

System for controlling cone and pitch angle of a rotor blade assembly of a wind turbine Download PDF

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Publication number
WO2011039777A3
WO2011039777A3 PCT/IN2010/000633 IN2010000633W WO2011039777A3 WO 2011039777 A3 WO2011039777 A3 WO 2011039777A3 IN 2010000633 W IN2010000633 W IN 2010000633W WO 2011039777 A3 WO2011039777 A3 WO 2011039777A3
Authority
WO
WIPO (PCT)
Prior art keywords
cone
rotor blades
bearing
wind turbine
rotor
Prior art date
Application number
PCT/IN2010/000633
Other languages
French (fr)
Other versions
WO2011039777A2 (en
Inventor
Varadharajan Ponnudurai
Original Assignee
Varadharajan Ponnudurai
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 Varadharajan Ponnudurai filed Critical Varadharajan Ponnudurai
Publication of WO2011039777A2 publication Critical patent/WO2011039777A2/en
Publication of WO2011039777A3 publication Critical patent/WO2011039777A3/en

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
    • F03D7/022—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
    • 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
    • F03D7/0236—Adjusting aerodynamic properties of the blades by changing the active surface of the wind engaging parts, e.g. reefing or furling
    • 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
    • F05B2240/202—Rotors with adjustable area of intercepted fluid
    • F05B2240/2022—Rotors with adjustable area of intercepted fluid by means of teetering or coning blades
    • 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
    • F05B2240/50—Bearings
    • 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

Abstract

A system for controlling cone and pitch angle of a rotor blade assembly of a wind turbine comprises a rotor mounted to a tower (1) of the wind turbine positioned on the ground surface/foundation/platform. The rotor is incorporated with a hub (2) and one or more rotor blades (3). A control mechanism (4) is associated between the hub (2) and the rotor blades (3) in such a way that the rotor blades (3) are swivel connected to the hub (2). The control mechanism (4) is configured with a drive, i.e. cone drive (6) and pitch drive (7), for coupling the hub to the rotor blades through a bearing, i.e. cone bearing (4b) and pitch bearing (5), in an inclined and swiveled manner. The control mechanism comprises an intermediate part that connects the cone bearing and the pitch bearing for coupling the hub to the rotor blades at the inclined angle for swiveling. The control mechanism is configured for operating the drive to drive the bearing, such that cone and pitch angles of the rotor blades are controlled simultaneously, independently or intermittently or synchronously to adjust rotor diameter along with changing the cone and pitch angles of the rotor blades, in accordance with variations in wind speeds. Such system improves a productivity and efficiency of the wind turbine in low, medium and high wind speeds, and effectively reduces the loads and stresses acting on the parts of the wind turbine due to the high and excessive wind speeds.
PCT/IN2010/000633 2009-10-01 2010-09-20 System for controlling cone and pitch angle of a rotor blade assembly of a wind turbine WO2011039777A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN2404/CHE/2009 2009-10-01
IN2404CH2009 2009-10-01

Publications (2)

Publication Number Publication Date
WO2011039777A2 WO2011039777A2 (en) 2011-04-07
WO2011039777A3 true WO2011039777A3 (en) 2011-11-03

Family

ID=43826739

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2010/000633 WO2011039777A2 (en) 2009-10-01 2010-09-20 System for controlling cone and pitch angle of a rotor blade assembly of a wind turbine

Country Status (1)

Country Link
WO (1) WO2011039777A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11333128B2 (en) * 2018-08-01 2022-05-17 Vestas Wind Systems A/S Method for controlling a tip height of a wind turbine
US20240077057A1 (en) * 2019-10-08 2024-03-07 Vestas Wind Systems A/S A method for starting a wind turbine with hinged wind turbine blades
CN113217269B (en) * 2021-05-17 2022-05-24 中国华能集团清洁能源技术研究院有限公司 Variable pre-cone angle device for wind wheel of wind turbine generator and use method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4431375A (en) * 1979-05-10 1984-02-14 Carter Wind Power Wind-driven generator apparatus
WO2001071183A1 (en) * 2000-03-22 2001-09-27 The Wind Turbine Company Rotor pitch control method and apparatus for parking wind turbine
WO2003019005A1 (en) * 2001-08-24 2003-03-06 William Currie A wind turbine and rotor assembly

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4533297A (en) 1982-09-15 1985-08-06 Bassett David A Rotor system for horizontal axis wind turbines
US5584655A (en) 1994-12-21 1996-12-17 The Wind Turbine Company Rotor device and control for wind turbine
US7071578B1 (en) 2002-01-10 2006-07-04 Mitsubishi Heavy Industries, Ltd. Wind turbine provided with a controller for adjusting active annular plane area and the operating method thereof
US7530785B1 (en) 2005-04-13 2009-05-12 The Wind Turbine Company Method and apparatus for controlling pitch and flap angles of a wind turbine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4431375A (en) * 1979-05-10 1984-02-14 Carter Wind Power Wind-driven generator apparatus
WO2001071183A1 (en) * 2000-03-22 2001-09-27 The Wind Turbine Company Rotor pitch control method and apparatus for parking wind turbine
WO2003019005A1 (en) * 2001-08-24 2003-03-06 William Currie A wind turbine and rotor assembly

Also Published As

Publication number Publication date
WO2011039777A2 (en) 2011-04-07

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