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Publication numberCA2425447 A1
Publication typeApplication
Application numberCA 2425447
Publication date17 Oct 2004
Filing date17 Apr 2003
Priority date17 Apr 2003
Also published asCA2425447C
Publication numberCA 2425447, CA 2425447 A1, CA 2425447A1, CA-A1-2425447, CA2425447 A1, CA2425447A1
InventorsMichel J. L. Auclair
ApplicantMichel J. L. Auclair
Export CitationBiBTeX, EndNote, RefMan
External Links: CIPO, Espacenet
Wind turbine blade unit
CA 2425447 A1
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.
Description  available in
Claims  available in
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
CN102046965B2 Apr 200917 Apr 2013Lm玻璃纤维制品有限公司A wind turbine blade with an auxiliary airfoil
CN102434384A *22 Nov 20112 May 2012张向增Novel composite material blade of horizontal shaft wind generating set
CN102459874A *19 May 201016 May 2012维斯塔斯风力系统集团公司A wind turbine and a blade for a wind turbine
CN102459874B19 May 20104 Jun 2014维斯塔斯风力系统集团公司A wind turbine and a blade for a wind turbine
CN103133237A *21 Nov 20125 Jun 2013通用电气公司Blade extension for rotor blade in wind turbine
CN103133237B *21 Nov 201218 Jan 2017通用电气公司用于风力涡轮机中的转子叶片的叶片延伸部
EP2078852A3 *12 Jun 20082 Jan 2013Siemens AktiengesellschaftWind turbine rotor blade
EP2107235A1 *2 Apr 20087 Oct 2009Lm Glasfiber A/SA wind turbine blade with an auxiliary airfoil
US864706313 Mar 200711 Feb 2014Tecsis Tecnologia Sistemas Avanšados S.A.Multi-element blade with aerodynamic profiles
US88341302 Apr 200916 Sep 2014Peter FuglsangWind turbine blade with an auxiliary airfoil
US920061419 May 20101 Dec 2015Vestas Wind Systems A/SWind turbine and a blade for a wind turbine
US20100329879 *3 Jun 201030 Dec 2010Presz Jr Walter MWind turbine blades with mixer lobes
US20110064582 *28 May 200917 Mar 2011Ignacio Romero SanzWind turbine blade with high-lift devices
US20170022967 *21 Jul 201526 Jan 2017Winnova Energy LLCSystem and method for improving efficiency of turbine airfoils
WO2007105174A113 Mar 200720 Sep 2007Tecsis Tecnologia E Sistemas Avanšados LtdaMulti-element blade with aerodynamic profiles
WO2009121927A1 *2 Apr 20098 Oct 2009Lm Glasfiber A/SA wind turbine blade with an auxiliary airfoil
WO2009146810A2 *26 May 200910 Dec 2009Siegfried MickelerRotor blade for a wind power plant and wind power plant
WO2009146810A3 *26 May 200911 Nov 2010Siegfried MickelerRotor blade for a wind power plant and wind power plant
WO2010133649A3 *19 May 20107 Apr 2011Vestas Wind Systems A/SA wind turbine and a blade for a wind turbine
WO2011134985A1 *27 Apr 20113 Nov 2011Lm Glasfiber A/SWind turbine blade provided with a slat assembly
WO2014006542A3 *26 Jun 201327 Mar 2014Nelson Mandela Metropolitan UniversityTurbine arrangement
WO2014113888A1 *22 Jan 201431 Jul 2014Distributed Thermal Systems Ltd.Multiple airfoil wind turbine blade assembly
WO2015171349A1 *28 Apr 201512 Nov 2015Siemens AktiengesellschaftSoiling shield for wind turbine blade
WO2017076096A1 *11 Aug 201611 May 2017周方Reinforced blade for wind-driven generator
International ClassificationF03D1/06
Cooperative ClassificationF03D1/0633, F05B2240/31, Y02E10/721
European ClassificationF03D1/06B6
Legal Events
17 Apr 2003EEERExamination request