WO2008113349A3 - Slow rotating wind turbine rotor with slender blades - Google Patents

Slow rotating wind turbine rotor with slender blades Download PDF

Info

Publication number
WO2008113349A3
WO2008113349A3 PCT/DK2008/000102 DK2008000102W WO2008113349A3 WO 2008113349 A3 WO2008113349 A3 WO 2008113349A3 DK 2008000102 W DK2008000102 W DK 2008000102W WO 2008113349 A3 WO2008113349 A3 WO 2008113349A3
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
blades
wind turbine
lift coefficient
sub
Prior art date
Application number
PCT/DK2008/000102
Other languages
French (fr)
Other versions
WO2008113349A2 (en
Inventor
Kristian Balschmidt Godsk
Original Assignee
Vestas Wind Sys As
Kristian Balschmidt Godsk
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 Vestas Wind Sys As, Kristian Balschmidt Godsk filed Critical Vestas Wind Sys As
Publication of WO2008113349A2 publication Critical patent/WO2008113349A2/en
Publication of WO2008113349A3 publication Critical patent/WO2008113349A3/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
    • 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
    • F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05B2240/306—Surface measures
    • F05B2240/3062—Vortex generators
    • 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
    • F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05B2240/32—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor with roughened 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

Abstract

An advantageous new design of a wind turbine designed to a slow rotation of the rotor is obtained by providing one, two or more parallel rows of sub-boundary layer vortex generators, whereby a blade is obtained, which is resistant to stall and provides for a high maximum lift coefficient CL,maχ of the blades and a slender blade design, a low so-called radius specific solidity of the rotor. The very high lift coefficient CL allows for an advantageous new design of a rotor operated with a low tip speed of the blades, which reduces the generation of aerodynamic noise. The row or rows of sub-boundary layer vortex generators are in a preferred embodiment of the invention provided in combination with Gurney Flaps generating a very high lift coefficient CL with a relative gentle stall at very high angle of attack.
PCT/DK2008/000102 2007-03-20 2008-03-13 Slow rotating wind turbine rotor with slender blades WO2008113349A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200700428 2007-03-20
DKPA200700428 2007-03-20

Publications (2)

Publication Number Publication Date
WO2008113349A2 WO2008113349A2 (en) 2008-09-25
WO2008113349A3 true WO2008113349A3 (en) 2009-02-26

Family

ID=39766532

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2008/000102 WO2008113349A2 (en) 2007-03-20 2008-03-13 Slow rotating wind turbine rotor with slender blades

Country Status (1)

Country Link
WO (1) WO2008113349A2 (en)

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GB2466478A (en) * 2008-12-02 2010-06-30 Aerovortex Mills Ltd Suction generation device
EP2138714A1 (en) * 2008-12-12 2009-12-30 Lm Glasfiber A/S Wind turbine blade having a flow guiding device with optimised height
US8876064B2 (en) 2009-12-21 2014-11-04 Ramot At Tel-Aviv University Ltd. Oscillatory vorticity generator and applications thereof
CN102985684B (en) 2010-04-26 2015-11-25 Se刀片技术有限公司 For the rotor of wind turbine
US8061986B2 (en) 2010-06-11 2011-11-22 General Electric Company Wind turbine blades with controllable aerodynamic vortex elements
US8047801B2 (en) 2010-06-23 2011-11-01 General Electric Company Wind turbine blades with aerodynamic vortex elements
US8083488B2 (en) 2010-08-23 2011-12-27 General Electric Company Blade extension for rotor blade in wind turbine
EP2633186B1 (en) 2010-10-27 2020-06-17 Vestas Wind Systems A/S A wind turbine lightning protection system and wind turbine blade
US7976276B2 (en) 2010-11-04 2011-07-12 General Electric Company Noise reducer for rotor blade in wind turbine
US7976283B2 (en) * 2010-11-10 2011-07-12 General Electric Company Noise reducer for rotor blade in wind turbine
US8523515B2 (en) 2010-11-15 2013-09-03 General Electric Company Noise reducer for rotor blade in wind turbine
US8267657B2 (en) 2010-12-16 2012-09-18 General Electric Company Noise reducer for rotor blade in wind turbine
DK2479423T3 (en) 2011-01-24 2018-05-28 Siemens Ag Wind turbine rotor blade element
US8167554B2 (en) 2011-01-28 2012-05-01 General Electric Corporation Actuatable surface features for wind turbine rotor blades
DK2484896T3 (en) * 2011-02-04 2014-07-28 Lm Wp Patent Holding As Mounting of vortex generator devices via mounting plate
US8414261B2 (en) 2011-05-31 2013-04-09 General Electric Company Noise reducer for rotor blade in wind turbine
CN103974878B (en) 2011-07-22 2019-07-30 Lm Wp 专利控股有限公司 Vortex generator arrangement for aerofoil profile
PL2736805T3 (en) 2011-07-22 2017-12-29 Lm Wp Patent Holding A/S Wind turbine blade comprising vortex generators
EP2548800A1 (en) 2011-07-22 2013-01-23 LM Wind Power A/S Method for retrofitting vortex generators on a wind turbine blade
US8834127B2 (en) 2011-09-09 2014-09-16 General Electric Company Extension for rotor blade in wind turbine
US8834117B2 (en) 2011-09-09 2014-09-16 General Electric Company Integrated lightning receptor system and trailing edge noise reducer for a wind turbine rotor blade
US8430638B2 (en) 2011-12-19 2013-04-30 General Electric Company Noise reducer for rotor blade in wind turbine
US9297357B2 (en) 2013-04-04 2016-03-29 General Electric Company Blade insert for a wind turbine rotor blade
US9562513B2 (en) 2013-05-03 2017-02-07 General Electric Company Wind turbine rotor blade assembly with surface features
US9267491B2 (en) 2013-07-02 2016-02-23 General Electric Company Wind turbine rotor blade having a spoiler
US9506452B2 (en) 2013-08-28 2016-11-29 General Electric Company Method for installing a shear web insert within a segmented rotor blade assembly
US9523279B2 (en) 2013-11-12 2016-12-20 General Electric Company Rotor blade fence for a wind turbine
US9494134B2 (en) 2013-11-20 2016-11-15 General Electric Company Noise reducing extension plate for rotor blade in wind turbine
US9752559B2 (en) 2014-01-17 2017-09-05 General Electric Company Rotatable aerodynamic surface features for wind turbine rotor blades
CA2948068A1 (en) * 2014-05-06 2015-11-12 Siemens Aktiengesellschaft Noise reduction means for a rotor blade of a wind turbine
DK3037656T3 (en) 2014-12-22 2017-03-13 Siemens Ag Rotor blade with vortex generators
US10087912B2 (en) 2015-01-30 2018-10-02 General Electric Company Vortex generator for a rotor blade
US10180125B2 (en) 2015-04-20 2019-01-15 General Electric Company Airflow configuration for a wind turbine rotor blade
US10487798B2 (en) 2016-08-05 2019-11-26 General Electric Company System and method for locating airflow modifiers for installation on a wind turbine rotor blade
US10487796B2 (en) 2016-10-13 2019-11-26 General Electric Company Attachment methods for surface features of wind turbine rotor blades
US10465652B2 (en) 2017-01-26 2019-11-05 General Electric Company Vortex generators for wind turbine rotor blades having noise-reducing features
CN109386424A (en) * 2017-08-10 2019-02-26 上海电气风电集团有限公司 Vortex generator, pneumatic equipment bladess and its installation method with vortex generator
JP6783211B2 (en) 2017-10-20 2020-11-11 三菱重工業株式会社 How to determine the placement of the vortex generator on the wind turbine blades and wind turbine blades
US10767623B2 (en) 2018-04-13 2020-09-08 General Electric Company Serrated noise reducer for a wind turbine rotor blade
US10746157B2 (en) 2018-08-31 2020-08-18 General Electric Company Noise reducer for a wind turbine rotor blade having a cambered serration
WO2021028573A1 (en) 2019-08-14 2021-02-18 Power Curve Aps Wind turbine blade with a gurney flap
CN113107758B (en) * 2021-04-16 2022-03-04 北京腾燊科技有限公司 A device and blade of making an uproar falls in gradual shrinkage formula for blade

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990011929A1 (en) * 1989-04-07 1990-10-18 Wheeler Gary O Low drag vortex generators
WO2001016482A1 (en) * 1999-09-01 2001-03-08 Stichting Energieonderzoek Centrum Nederland Blade for a wind turbine
EP1674723A2 (en) * 2004-12-23 2006-06-28 General Electric Company Active flow modification on wind turbine blades
WO2006122547A1 (en) * 2005-05-17 2006-11-23 Vestas Wind Systems A/S A pitch controlled wind turbine blade, a wind turbine and use hereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990011929A1 (en) * 1989-04-07 1990-10-18 Wheeler Gary O Low drag vortex generators
WO2001016482A1 (en) * 1999-09-01 2001-03-08 Stichting Energieonderzoek Centrum Nederland Blade for a wind turbine
EP1674723A2 (en) * 2004-12-23 2006-06-28 General Electric Company Active flow modification on wind turbine blades
WO2006122547A1 (en) * 2005-05-17 2006-11-23 Vestas Wind Systems A/S A pitch controlled wind turbine blade, a wind turbine and use hereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
FUGLSANG P ET AL: "DEVELOPMENT OF THE RISO WIND TURBINE AIRFOILS", WIND ENERGY, WILEY, CHICHESTER, GB, vol. 7, no. 2, 1 January 2004 (2004-01-01), pages 145 - 162, XP008068651, ISSN: 1099-1824 *
WETZEL K K ET AL: "INFLUENCE OF VORTEX GENERATORS ON NREL S807 AIRFOIL AERODYNAMIC CHARACTERISTICS AND WIND TURBINE PERFORMANCE", WIND ENGINEERING, MULTI-SCIENCE PUBLISHING CO., BRENTWOOD, ESSEX, GB, vol. 19, no. 3, 1 January 1995 (1995-01-01), pages 157 - 165, XP000516437, ISSN: 0309-524X *

Also Published As

Publication number Publication date
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