Patents by Inventor Stefano Bove
Stefano Bove has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20220399767Abstract: A generator for a wind turbine has a rotor and a stator separated radially by an air gap, wherein the stator includes at least one stator segment, which includes a stack of lamination sheets and at least one stator winding, and a stator support structure supporting the at least one stator segment, wherein the generator further includes a cooling arrangement for providing cooling fluid at least to the air gap, wherein the cooling arrangement further includes a cooling fluid flow dividing element for dividing an incoming cooling fluid flow to the stator into a first partial cooling fluid flow directed to the air gap and a second partial cooling fluid flow directed to the stator support structure.Type: ApplicationFiled: June 2, 2022Publication date: December 15, 2022Inventors: Stefano Bove, Jens Bomholt Jensen, Anders Vangsgaard Nielsen
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Patent number: 10267289Abstract: A wind turbine blade with a flow guiding device attached to a profiled contour on a pressure side of the blade is described. The flow guiding device has a front surface facing toward an oncoming airflow and comprises at least a first portion, which is angled towards the oncoming airflow and a leading edge of the wind turbine blade.Type: GrantFiled: October 8, 2010Date of Patent: April 23, 2019Assignee: LM GLASFIBER A/SInventors: Peter Fuglsang, Stefano Bove, Peter Grabau, V. V. Subrahmanyam, Brian Lund, Lars E. Jensen, Sreeram Kottumuklu Radhakrishnan
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Patent number: 9695800Abstract: A wind turbine blade with a plurality of flow guiding device parts attached to a profiled contour on a pressure side of the blade is described. The longitudinally extending flow guiding device parts are grouped together to form a first flow guiding device group in the transition region of the blade.Type: GrantFiled: October 8, 2010Date of Patent: July 4, 2017Assignee: LM GLASFIBER A/SInventors: Peter Fuglsang, Stefano Bove, Subrahmanyam Venkata Vemulapati, Brian Lund, Lars E. Jensen, Sreeram Kottumuklu Radhakrishnan
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Publication number: 20160252073Abstract: A blade for a rotor of a wind turbine has a profiled contour including a leading edge and a trailing edge as well as a pressure side and a suction side, the profiled contour generating lift when impacted by an incident airflow. The profiled contour is divided into a root region with a substantially circular profile closest to the hub, an airfoil region with a lift generating profile furthest away from the hub, and a transition region between the root and airfoil regions. The suction side has a first zone which extends substantially in the direction of the incident airflow, and which is positioned in a zone of a cross-flow. The first zone includes a first barrier generating means adapted to generating a barrier of airflow, which extends essentially in the direction of the incident airflow and is of sufficient strength and length so as to effectively reduce the cross-flow.Type: ApplicationFiled: April 12, 2016Publication date: September 1, 2016Inventors: Peter FUGLSANG, Stefano BOVE
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Patent number: 9303621Abstract: A wind turbine blade (10) for a rotor of a wind turbine (2) is provided with a longitudinally extending flow guiding device (70, 170) attached to the profiled contour. The flow guiding device comprises: a base (90, 190) having a first longitudinal end (91, 191) nearest the root end (16) and a second longitudinal end (92, 192) nearest the tip end (14), a first side (93, 193) nearest the leading edge (18) and a second side (94, 194) nearest the trailing edge (20), as well as a first surface (95, 195) and a second surface (96, 196), the first surface of the base being attached to the profiled contour, and the second surface facing away from the profiled contour. A longitudinally extending substantially plate-shaped element (97, 197) protrudes from the second surface (96, 196) of the base (90, 190).Type: GrantFiled: October 8, 2010Date of Patent: April 5, 2016Assignee: LM GLASFIBER A/SInventors: Peter Fuglsang, Stefano Bove, Peter Grabau, V.v. Subrahmanyam, Brian Lund, Lars E. Jensen, Sreeram Kottumuklu Radhakrishnan
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Patent number: 9057359Abstract: A blade, for a rotor of a wind turbine has a profiled contour in a radial direction is divided into a root region with a substantially circular or elliptical profile closest to the hub and an airfoil region with a lift generating profile furthest away from the hub. A transition region between the root region and the airfoil region has a profile gradually changing in the radial direction from the circular or elliptical profile of the root region to the lift generating profile of the airfoil region, and the airfoil region comprises at least a first longitudinal segment extending at least 20% of a longitudinal extent of the airfoil region. The first longitudinal segment has a first base part with a cross-sectional profile such that, when impacted by an incident airflow at an angle of attack of 0 degrees has a lift coefficient, which is 0 or less.Type: GrantFiled: May 18, 2010Date of Patent: June 16, 2015Assignee: LM GLASFIBER A/SInventors: Peter Fuglsang, Stefano Bove, Lars Fuglsang
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Patent number: 9033659Abstract: A blade for a rotor of a wind turbine is manufactured with a root region with a substantially circular or elliptical profile closest to the hub, an airfoil region with a lift generating profile furthest away from the hub and a transition region having a profile gradually changing the root region to the airfoil region. A first blade design is used for the first base part on a first longitudinal section of an airfoil region of a second blade, so that an induction factor of the first base part on the second blade deviates from a target induction factor. The first longitudinal section of the second blade is provided with flow altering devices so as to adjust the aerodynamic properties of the first longitudinal segment to substantially meet the target induction factor at the design point on the second blade.Type: GrantFiled: May 18, 2010Date of Patent: May 19, 2015Assignee: LM Glasfiber A/SInventors: Peter Fuglsang, Stefano Bove, Lars Fuglsang
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Patent number: 8899922Abstract: A blade for a rotor of a wind turbine is divided into a root region closest to the hub and an airfoil region with a lift generating profile furthest away from the hub. A transition region has a profile gradually changing in the radial direction from the circular or elliptical profile of the root region to the lift generating profile of the airfoil region, and includes at least a first longitudinal segment extending along at least 20% of a longitudinal extent of the airfoil region. A base part has an inherent non-ideal twist, such as no twist, or a reduced twist compared to a target blade twist, so that an axial induction factor of the first base part at a design point deviates from a target axial induction factor. A number of flow altering devices are arranged so as to adjust the aerodynamic properties of the first longitudinal segment.Type: GrantFiled: May 18, 2010Date of Patent: December 2, 2014Assignee: LM Glasfiber A/SInventors: Peter Fuglsang, Stefano Bove, Lars Fuglsang
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Patent number: 8894374Abstract: A blade for a rotor of a wind turbine has a root region with a substantially circular or elliptical profile closest to the hub and an airfoil region with a lift generating profile furthest away from the hub. A transition region has a base part with an inner dimension that varies linearly in the radial direction of the blade in such a way that an induction factor of the first base part without flow altering devices at a rotor design point deviates from a target induction factor. The first longitudinal segment is provided with a number of first flow altering devices arranged so as to adjust the aerodynamic properties of the first longitudinal segment to substantially meet the target induction factor at the design point.Type: GrantFiled: May 18, 2010Date of Patent: November 25, 2014Assignee: LM Glasfiber A/SInventors: Peter Fuglsang, Stefano Bove, Lars Fuglsang
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Patent number: 8888453Abstract: A blade for a rotor of a wind turbine is divided into a root region closest to the hub and an airfoil region with a lift generating profile furthest away from the hub and a transition region. A base part of the transition region has an axial induction factor, which without flow altering device deviates at least 5% from a target axial induction factor. A number of first flow altering devices are arranged so as to adjust the aerodynamic properties of a longitudinal segment of the transition region to substantially meet the target axial induction factor.Type: GrantFiled: May 18, 2010Date of Patent: November 18, 2014Assignee: LM Glasfiber A/SInventors: Peter Fuglsang, Stefano Bove, Lars Fuglsang
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Patent number: 8834130Abstract: A blade for a rotor of a wind turbine having a substantially horizontal rotor shaft, the rotor comprising a hub, from which the blade extends substantially in a radial direction when mounted to the hub. The blade comprises a main blade part having a profiled contour comprising a pressure side and a suction side as well as a leading edge and a trailing edge with a chord extending between the leading edge and the trailing edge. The profiled contour generates a lift when being impacted by an incident airflow. The profiled contour is divided in the radial direction into a root region with a substantially circular or elliptical profile closest to the hub, the substantially circular or elliptical profile having a diameter, an airfoil region with a lift generating profile furthest away from the hub, and a transition region between the root region and the airfoil region.Type: GrantFiled: April 2, 2009Date of Patent: September 16, 2014Inventors: Peter Fuglsang, Stefano Bove
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Patent number: 8807940Abstract: A blade for a wind turbine rotor with a hub is described. The object of the invention is to provide a wind turbine blade of the modern, aerodynamic type with improved regulating properties to enhance the adjustment of the wind turbine to various wind conditions, and where no mechanical parts are needed near the tip area. At least one slot or a number of holes arranged in at least one longitudinally extending zone, thereby allowing an interior cavity of the blade to communicate with the exterior. The amount of air emitted from the interior cavity to the exterior is also regulated to alter the aerodynamic properties of the blade.Type: GrantFiled: January 4, 2008Date of Patent: August 19, 2014Assignee: LM Glasfiber A/SInventors: Peter Grabau, Stefano Bove
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Patent number: 8579594Abstract: A wind turbine blade having a longitudinal direction with a root end and a tip end as well as a chord extending in a transverse direction between a leading edge and a trailing edge is described. The blade comprises a flow control surface with a suction side and a pressure side. A number of boundary layer control means is formed in the flow control surface. The boundary layer control means include a channel submerged in the flow control surface with a first end facing towards the leading edge and a second end facing towards the trailing edge of the blade.Type: GrantFiled: August 29, 2008Date of Patent: November 12, 2013Assignee: LM Glasfiber A/SInventors: Peter Fuglsang, Stefano Bove
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Patent number: 8550787Abstract: A wind turbine blade having a longitudinal direction with a root end and a tip end as well as a chord extending in a transverse direction between a leading edge and a trailing edge is described. The blade comprises a flow control surface with a suction side and a pressure side. A number of boundary layer control structures are formed in the flow control surface. The boundary layer control structures include a channel submerged in the flow control surface with a first end facing towards the leading edge and a second end facing towards the trailing edge of the blade. The channel further comprises a bottom surface extending from the first end to the second end. The channel at the first end comprises a first channel zone comprising a first sub-channel having a first cross-sectional area and a second sub-channel having a second cross-sectional area, the first sub-channel and the second sub-channel crossing each other at a point of crossing.Type: GrantFiled: August 29, 2008Date of Patent: October 8, 2013Assignee: LM Glasfiber A/SInventors: Peter Fuglsang, Stefano Bove
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Publication number: 20120201689Abstract: A wind turbine blade (10) for a rotor of a wind turbine (2) is provided with a longitudinally extending flow guiding device (70, 170) attached to the profiled contour. The flow guiding device comprises: a base (90, 190) having a first longitudinal end (91, 191) nearest the root end (16) and a second longitudinal end (92, 192) nearest the tip end (14), a first side (93, 193) nearest the leading edge (18) and a second side (94, 194) nearest the trailing edge (20), as well as a first surface (95, 195) and a second surface (96, 196), the first surface of the base being attached to the profiled contour, and the second surface facing away from the profiled contour. A longitudinally extending substantially plate-shaped element (97, 197) protrudes from the second surface (96, 196) of the base (90, 190).Type: ApplicationFiled: October 8, 2010Publication date: August 9, 2012Applicant: LM GLASFIBER A/SInventors: Peter Fuglsang, Stefano Bove, Peter Grabau, V.v. Subrahmanyam, Brian Lund, Lars E. Jensen, Sreeram Kottumuklu Radhakrishnan
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Publication number: 20120201690Abstract: A wind turbine blade with a flow guiding device attached to a profiled contour on a pressure side of the blade is described. The flow guiding device has a front surface facing toward an oncoming airflow and comprises at least a first portion, which is angled towards the oncoming airflow and a leading edge of the wind turbine blade.Type: ApplicationFiled: October 8, 2010Publication date: August 9, 2012Applicant: LM GLASFIBER A/SInventors: Peter Fuglsang, Stefano Bove, Peter Grabau, V.V. Subrahmanyam, Brian Lund, Lars E. Jensen, Sreeram Kottumuklu Radhakrishnan
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Publication number: 20120195764Abstract: A wind turbine blade with a plurality of flow guiding device parts attached to a profiled contour on a pressure side of the blade is described. The longitudinally extending flow guiding device parts are grouped together to form a first flow guiding device group in the transition region of the blade.Type: ApplicationFiled: October 8, 2010Publication date: August 2, 2012Applicant: LM GLASFIBER A/SInventors: Peter Fuglsang, Stefano Bove, V.V. Subrahmanyam, Brian Lund, Lars E. Jensen, Sreeram Kottumuklu Radhakrishnan
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Publication number: 20120070299Abstract: A blade for a rotor of a wind turbine has a root region with a substantially circular or elliptical profile closest to the hub and an airfoil region with a lift generating profile furthest away from the hub. A transition region has a base part with an inner dimension that varies linearly in the radial direction of the blade in such a way that an induction factor of the first base part without flow altering devices at a rotor design point deviates from a target induction factor. The first longitudinal segment is provided with a number of first flow altering devices arranged so as to adjust the aerodynamic properties of the first longitudinal segment to substantially meet the target induction factor at the design point.Type: ApplicationFiled: May 18, 2010Publication date: March 22, 2012Applicant: LM GLASFIBER A/SInventors: Peter Fuglsang, Stefano Bove, Lars Fuglsang
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Publication number: 20120070281Abstract: A wind turbine is operated with a blade in which a transition region is provided between a root region with a substantially circular or elliptical profile closest to a hub and an airfoil region with a lift generating profile furthest away from the hub. The transition region has a base part with an inherent non-ideal aerodynamic design so that a substantial longitudinal part of the base part without flow altering devices at a design point deviates from a target axial induction factor. A pitch of the blade and a rotational speed are adjusted to meet the target axial induction factor of the second longitudinal segment, and flow altering devices are provided so as to meet the target axial induction factor of the first longitudinal segment.Type: ApplicationFiled: May 18, 2010Publication date: March 22, 2012Applicant: LM GLASFIBER A/SInventors: Peter Fuglsang, Stefano Bove, Lars Fuglsang
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Publication number: 20120063910Abstract: A blade for a rotor of a wind turbine is divided into a root region closest to the hub and an airfoil region with a lift generating profile furthest away from the hub. A transition region has a profile gradually changing in the radial direction from the circular or elliptical profile of the root region to the lift generating profile of the airfoil region, and includes at least a first longitudinal segment extending along at least 20% of a longitudinal extent of the airfoil region. A base part has an inherent non-ideal twist, such as no twist, or a reduced twist compared to a target blade twist, so that an axial induction factor of the first base part at a design point deviates from a target axial induction factor. A number of flow altering devices are arranged so as to adjust the aerodynamic properties of the first longitudinal segment.Type: ApplicationFiled: May 18, 2010Publication date: March 15, 2012Applicant: LM GLASFIBER A/SInventors: Peter Fuglsang, Stefano Bove, Lars Fuglsang