CA2425447A1 - Wind turbine blade unit - Google Patents
Wind turbine blade unit Download PDFInfo
- Publication number
- CA2425447A1 CA2425447A1 CA002425447A CA2425447A CA2425447A1 CA 2425447 A1 CA2425447 A1 CA 2425447A1 CA 002425447 A CA002425447 A CA 002425447A CA 2425447 A CA2425447 A CA 2425447A CA 2425447 A1 CA2425447 A1 CA 2425447A1
- Authority
- CA
- Canada
- Prior art keywords
- blade unit
- rotor hub
- wind turbine
- rotor
- airfoil
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 230000000977 initiatory effect Effects 0.000 abstract 1
- 230000003068 static effect Effects 0.000 abstract 1
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
- F03D1/0633—Rotors characterised by their aerodynamic shape of the 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
- F05B2240/20—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
- F05B2240/31—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor of changeable form or shape
-
- 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 blade unit assembly for applications such as wind turbines, characterized by the arrangement of a main airfoil and a smaller secondary airfoil joined by streamlined structural elements, is mounted on a rotor hub assembly using a holding spar extending from the main airfoil. The blade unit is balanced and can pivot about its holding spar longitudinal axis, and has aerodynamic static and dynamic stability that provides the blade unit with pitch angle self-adjustment capability for controlling the wind turbine rotor hub rotation speed, for initiating rotor rotation in low winds, and for limiting the rotor blades speed in high winds. A plurality of blade units is mounted on a rotor hub.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002425447A CA2425447C (en) | 2003-04-17 | 2003-04-17 | Wind turbine blade unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002425447A CA2425447C (en) | 2003-04-17 | 2003-04-17 | Wind turbine blade unit |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2425447A1 true CA2425447A1 (en) | 2004-10-17 |
CA2425447C CA2425447C (en) | 2006-03-14 |
Family
ID=33163757
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002425447A Expired - Fee Related CA2425447C (en) | 2003-04-17 | 2003-04-17 | Wind turbine blade unit |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2425447C (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007105174A1 (en) | 2006-03-14 | 2007-09-20 | Tecsis Tecnologia E Sistemas Avançados Ltda | Multi-element blade with aerodynamic profiles |
EP2107235A1 (en) * | 2008-04-02 | 2009-10-07 | Lm Glasfiber A/S | A wind turbine blade with an auxiliary airfoil |
WO2009146810A2 (en) * | 2008-06-03 | 2009-12-10 | Siegfried Mickeler | Rotor blade for a wind power plant and wind power plant |
US20100329879A1 (en) * | 2009-06-03 | 2010-12-30 | Presz Jr Walter M | Wind turbine blades with mixer lobes |
US20110064582A1 (en) * | 2008-05-30 | 2011-03-17 | Ignacio Romero Sanz | Wind turbine blade with high-lift devices |
WO2010133649A3 (en) * | 2009-05-19 | 2011-04-07 | Vestas Wind Systems A/S | A wind turbine and a blade for a wind turbine |
WO2011134985A1 (en) * | 2010-04-27 | 2011-11-03 | Lm Glasfiber A/S | Wind turbine blade provided with a slat assembly |
CN102434384A (en) * | 2011-11-11 | 2012-05-02 | 张向增 | Novel composite material blade of horizontal shaft wind generating set |
EP2078852A3 (en) * | 2008-01-11 | 2013-01-02 | Siemens Aktiengesellschaft | Wind turbine rotor blade |
CN103133237A (en) * | 2011-11-21 | 2013-06-05 | 通用电气公司 | Blade extension for rotor blade in wind turbine |
WO2014006542A3 (en) * | 2012-07-05 | 2014-03-27 | Nelson Mandela Metropolitan University | Turbine arrangement |
WO2014113888A1 (en) * | 2013-01-22 | 2014-07-31 | Distributed Thermal Systems Ltd. | Multiple airfoil wind turbine blade assembly |
WO2015171349A1 (en) * | 2014-05-08 | 2015-11-12 | Siemens Aktiengesellschaft | Soiling shield for wind turbine blade |
US20170022967A1 (en) * | 2015-07-21 | 2017-01-26 | Winnova Energy LLC | System and method for improving efficiency of turbine airfoils |
WO2017076096A1 (en) * | 2015-11-03 | 2017-05-11 | 周方 | Reinforced blade for wind-driven generator |
US10253753B2 (en) | 2014-09-25 | 2019-04-09 | Winfoor Ab | Rotor blade for wind turbine |
-
2003
- 2003-04-17 CA CA002425447A patent/CA2425447C/en not_active Expired - Fee Related
Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2160511A1 (en) * | 2006-03-14 | 2010-03-10 | Tecsis Tecnologia E Sistemas Avancados Ltda | Multi-element blade with aerodynamic profiles |
US8647063B2 (en) | 2006-03-14 | 2014-02-11 | Tecsis Tecnologia Sistemas Avançados S.A. | Multi-element blade with aerodynamic profiles |
WO2007105174A1 (en) | 2006-03-14 | 2007-09-20 | Tecsis Tecnologia E Sistemas Avançados Ltda | Multi-element blade with aerodynamic profiles |
EP2078852A3 (en) * | 2008-01-11 | 2013-01-02 | Siemens Aktiengesellschaft | Wind turbine rotor blade |
CN102046965A (en) * | 2008-04-02 | 2011-05-04 | Lm玻璃纤维制品有限公司 | A wind turbine blade with an auxiliary airfoil |
EP2107235A1 (en) * | 2008-04-02 | 2009-10-07 | Lm Glasfiber A/S | A wind turbine blade with an auxiliary airfoil |
WO2009121927A1 (en) * | 2008-04-02 | 2009-10-08 | Lm Glasfiber A/S | A wind turbine blade with an auxiliary airfoil |
US8834130B2 (en) | 2008-04-02 | 2014-09-16 | Peter Fuglsang | Wind turbine blade with an auxiliary airfoil |
CN102046965B (en) * | 2008-04-02 | 2013-04-17 | Lm玻璃纤维制品有限公司 | A wind turbine blade with an auxiliary airfoil |
US20110064582A1 (en) * | 2008-05-30 | 2011-03-17 | Ignacio Romero Sanz | Wind turbine blade with high-lift devices |
WO2009146810A3 (en) * | 2008-06-03 | 2010-11-11 | Siegfried Mickeler | Rotor blade for a wind power plant and wind power plant |
WO2009146810A2 (en) * | 2008-06-03 | 2009-12-10 | Siegfried Mickeler | Rotor blade for a wind power plant and wind power plant |
US9200614B2 (en) | 2009-05-19 | 2015-12-01 | Vestas Wind Systems A/S | Wind turbine and a blade for a wind turbine |
CN102459874A (en) * | 2009-05-19 | 2012-05-16 | 维斯塔斯风力系统集团公司 | A wind turbine and a blade for a wind turbine |
CN102459874B (en) * | 2009-05-19 | 2014-06-04 | 维斯塔斯风力系统集团公司 | A wind turbine and a blade for a wind turbine |
WO2010133649A3 (en) * | 2009-05-19 | 2011-04-07 | Vestas Wind Systems A/S | A wind turbine and a blade for a wind turbine |
US20100329879A1 (en) * | 2009-06-03 | 2010-12-30 | Presz Jr Walter M | Wind turbine blades with mixer lobes |
US10352294B2 (en) | 2010-04-27 | 2019-07-16 | Lm Wp Patent Holding A/S | Wind turbine provided with a slat assembly |
WO2011134985A1 (en) * | 2010-04-27 | 2011-11-03 | Lm Glasfiber A/S | Wind turbine blade provided with a slat assembly |
CN102434384A (en) * | 2011-11-11 | 2012-05-02 | 张向增 | Novel composite material blade of horizontal shaft wind generating set |
CN103133237A (en) * | 2011-11-21 | 2013-06-05 | 通用电气公司 | Blade extension for rotor blade in wind turbine |
CN103133237B (en) * | 2011-11-21 | 2017-01-18 | 通用电气公司 | Blade extension for rotor blade in wind turbine |
WO2014006542A3 (en) * | 2012-07-05 | 2014-03-27 | Nelson Mandela Metropolitan University | Turbine arrangement |
WO2014113888A1 (en) * | 2013-01-22 | 2014-07-31 | Distributed Thermal Systems Ltd. | Multiple airfoil wind turbine blade assembly |
WO2015171349A1 (en) * | 2014-05-08 | 2015-11-12 | Siemens Aktiengesellschaft | Soiling shield for wind turbine blade |
US10253753B2 (en) | 2014-09-25 | 2019-04-09 | Winfoor Ab | Rotor blade for wind turbine |
US10094358B2 (en) * | 2015-07-21 | 2018-10-09 | Winnova Energy LLC | Wind turbine blade with double airfoil profile |
US20170022967A1 (en) * | 2015-07-21 | 2017-01-26 | Winnova Energy LLC | System and method for improving efficiency of turbine airfoils |
WO2017076096A1 (en) * | 2015-11-03 | 2017-05-11 | 周方 | Reinforced blade for wind-driven generator |
Also Published As
Publication number | Publication date |
---|---|
CA2425447C (en) | 2006-03-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20220301 |
|
MKLA | Lapsed |
Effective date: 20200831 |