1
Dan Christian Bak, Thomas Buhl, Peter Fuglsang, Helge Aagaard Madsen, Flemming Rasmussen: Control of power, loads and/or stability of a horizontal axis wind turbine by use of variable blade geometry control. Technical University of Denmark, Stephen A Bent, Foley & Lardner, December 15, 2009: US07632068 (28 worldwide citation)

The present invention relates to a design concept by which the power, loads and/or stability of a wind turbine may be controlled by typically fast variation of the geometry of the blades using active geometry control (e.g. smart materials or by embedded mechanical actuators), or using passive geomet ...


2
Dan Christian Bak, Peter Fuglsang: Modified wind turbine airfoil. Forskningscenter Riso, Harness Dickey & Pierce, March 16, 2004: US06705838 (13 worldwide citation)

The present invention relates in a broad aspect to a method for design and modification of airfoils useful for wind turbine applications, which airfoils possess smooth and stable characteristics in stall. These characteristics comprise: (1) No or very little tendency to double stall, (2) Insensitivi ...


3
Helge Aagaard Madsen, Flemming Rasmussen, Thomas Buhl, Morten Hartvig Hansen, Dan Christian Bak, Mac Gaunaa, Peter Bjørn Andersen: Variable trailing edge section geometry for wind turbine blade. Danmarks Tekniske Universitet, Foley & Lardner, April 16, 2013: US08419363 (3 worldwide citation)

A deformable trailing edge section (3) of a wind turbine blade (1), at least part of said section (3) being formed in a deformable material. The blade section (3) comprises one or more cavities (5) being in connection with or connectable to a fluid source in a way that allows fluid to stream from th ...


4
Dan Christian Bak, Thomas Buhl, Peter Fuglsang, Helge Aagaard Madsen, Flemming Rasmussen: Control of power, loads and/or stability of a horizontal axis wind turbine by use of variable blade geometry control. Forskningscenter Riso, Foley And Lardner, February 15, 2007: US20070036653-A1

The present invention relates to a design concept by which the power, loads and/or stability of a wind turbine may be controlled by typically fast variation of the geometry of the blades using active geometry control (e.g. smart materials or by embedded mechanical actuators), or using passive geomet ...


5
Helge Aagaard Madsen, Flemming Rasmussen, Thomas Buhl, Morten Hartvig Hansen, Dan Christian Bak, Mac Gaunaa, Peter Bjørn Andersen: Variable trailing edge section geometry for wind turbine blade. Danmarks Tekiske Universitet, Foley And Lardner, November 26, 2009: US20090290982-A1

A deformable trailing edge section (3) of a wind turbine blade (1), at least part of said section (3) being formed in a deformable material. The blade section (3) comprises one or more cavities (5) being in connection with or connectable to a fluid source in a way that allows fluid to stream from th ...