IN2014CN04447A - - Google Patents

Info

Publication number
IN2014CN04447A
IN2014CN04447A IN4447CHN2014A IN2014CN04447A IN 2014CN04447 A IN2014CN04447 A IN 2014CN04447A IN 4447CHN2014 A IN4447CHN2014 A IN 4447CHN2014A IN 2014CN04447 A IN2014CN04447 A IN 2014CN04447A
Authority
IN
India
Prior art keywords
blade
trailing edge
fluid
airflow
kinetic energy
Prior art date
Application number
Inventor
Ashish Singh
Original Assignee
Lm Wp Patent Holding 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 Lm Wp Patent Holding As filed Critical Lm Wp Patent Holding As
Publication of IN2014CN04447A publication Critical patent/IN2014CN04447A/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
    • 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
    • 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
    • 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
    • F03D1/0633—Rotors characterised by their aerodynamic shape 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
    • F03D1/0608—Rotors characterised by their aerodynamic shape
    • F03D1/0633—Rotors characterised by their aerodynamic shape of the blades
    • F03D1/0641—Rotors characterised by their aerodynamic shape of the blades of the section profile of the blades, i.e. aerofoil profile
    • 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
    • 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
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F03D3/061—Rotors characterised by their aerodynamic shape, e.g. aerofoil profiles
    • 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
    • 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
    • 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
    • F05B2250/00—Geometry
    • F05B2250/10—Geometry two-dimensional
    • F05B2250/18—Geometry two-dimensional patterned
    • F05B2250/183—Geometry two-dimensional patterned zigzag
    • 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
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction

Abstract

A wind turbine blade is described having noise reduction features. The blade has a plurality of projecting elements provided at the blade trailing edge to reduce the scattering noise produced during operation of the blade. The blade further comprises a fluid injection system which can inject a fluid into the turbulent airflow at the trailing edge of the blade to absorb some of the turbulent kinetic energy at the trailing edge and accordingly further reduce the levels of output noise produced by the blade.In a further aspect the fluid injection system may be adjustable to inject fluid in an upstream direction i.e. against the oncoming airflow in order to provide an increased absorption of turbulent kinetic energy from the incident airflow and accordingly to provide improved noise reduction characteristics.
IN4447CHN2014 2011-11-23 2012-11-15 IN2014CN04447A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP11190374 2011-11-23
PCT/EP2012/072768 WO2013076008A1 (en) 2011-11-23 2012-11-15 A wind turbine blade

Publications (1)

Publication Number Publication Date
IN2014CN04447A true IN2014CN04447A (en) 2015-09-04

Family

ID=47189939

Family Applications (1)

Application Number Title Priority Date Filing Date
IN4447CHN2014 IN2014CN04447A (en) 2011-11-23 2012-11-15

Country Status (7)

Country Link
US (1) US20140301864A1 (en)
EP (1) EP2783107B1 (en)
CN (1) CN104220746B (en)
DK (1) DK2783107T3 (en)
ES (1) ES2704629T3 (en)
IN (1) IN2014CN04447A (en)
WO (1) WO2013076008A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014205016A1 (en) 2014-03-18 2015-09-24 Senvion Gmbh Noise-reduced rotor blade of a wind energy plant
WO2016057107A1 (en) * 2014-10-11 2016-04-14 Richard Von Berg Spacer for wind turbine rotor blade
US20160258417A1 (en) * 2014-10-24 2016-09-08 Joseph Chiang Stacked blade windmill
PL3096003T3 (en) * 2015-05-21 2021-10-04 Siemens Gamesa Renewable Energy A/S Rotor blade with serrations for wind turbine
CN105089925A (en) * 2015-09-15 2015-11-25 韩万龙 Flexible bionic feather band for lift augmentation and noise reduction of tail edge and blade tip of wind turbine blade
US10240576B2 (en) * 2015-11-25 2019-03-26 General Electric Company Wind turbine noise reduction with acoustically absorbent serrations
ES2715511T3 (en) * 2016-02-12 2019-06-04 Lm Wp Patent Holding As Serrated outlet edge panel for a wind turbine blade
CN106050566B (en) * 2016-07-13 2018-11-16 西北工业大学 A kind of blunt trailing edge wind mill airfoil circulation control device and method
DE102016117012A1 (en) * 2016-09-09 2018-03-15 Wobben Properties Gmbh Wind turbine rotor blade
EP3406892A1 (en) * 2017-05-22 2018-11-28 LM Wind Power International Technology II ApS A wind turbine blade comprising a noise reducing device
CN111322198A (en) * 2020-03-10 2020-06-23 上海理工大学 Wind turbine wing section for improving pneumatic performance through jet flow
DE102020129453A1 (en) 2020-11-09 2022-05-12 Hochschule Flensburg Wind turbine with device for emitting water into the atmosphere

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5813625A (en) * 1996-10-09 1998-09-29 Mcdonnell Douglas Helicopter Company Active blowing system for rotorcraft vortex interaction noise reduction
US7387491B2 (en) * 2004-12-23 2008-06-17 General Electric Company Active flow modifications on wind turbine blades
US7354247B2 (en) * 2005-10-27 2008-04-08 General Electric Company Blade for a rotor of a wind energy turbine
US20080166241A1 (en) 2007-01-04 2008-07-10 Stefan Herr Wind turbine blade brush
NL2000821C2 (en) * 2007-08-17 2009-02-18 Stichting Energie Wind turbine and rotor blade.
NL2000819C2 (en) * 2007-08-17 2009-02-18 Stichting Energie Wind turbine and rotor blade.
US7883313B2 (en) * 2009-11-05 2011-02-08 General Electric Company Active flow control system for wind turbine
EP2365216B1 (en) * 2010-03-05 2012-06-20 Siemens Aktiengesellschaft Wind turbine with liquid medium distribution system
US8449255B2 (en) * 2010-03-21 2013-05-28 Btpatent Llc Wind turbine blade system with air passageway
US8523515B2 (en) 2010-11-15 2013-09-03 General Electric Company Noise reducer for rotor blade in wind turbine
US8128364B2 (en) * 2010-12-07 2012-03-06 General Electric Company Wind turbine rotor blade with porous window and controllable cover member

Also Published As

Publication number Publication date
EP2783107B1 (en) 2018-10-03
WO2013076008A1 (en) 2013-05-30
CN104220746A (en) 2014-12-17
CN104220746B (en) 2017-12-08
ES2704629T3 (en) 2019-03-19
EP2783107A1 (en) 2014-10-01
US20140301864A1 (en) 2014-10-09
DK2783107T3 (en) 2019-01-28

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