Lm Wind Power A/s

Lm Wp Patent Holding A/s

Lm Wind Power US Technology Aps

General Electric Renovables Espana, S.l.

Lm Glasfiber A/s

Lm Wind Power International Technology II Aps

Jesper Madsen

Marc Canal Vila

Kim Ansholm Rasmussen

Jesper Høeg

Lars Erik Jensen

Carlos Arce

Danny Kedochim

Hans Tommerup Knudsen

Ines Wurth

Rolf Hansen

Olaf Muller

Darren John Danielsen

Lars Bo Hansen

Peter Fuglsang

Martin Dahl

Peter Quiring

Christian Frank Andersen

Jordy Hertel Nilsson Van Kalken

Rajkumar Rajamani

Dhinagaran Ramachandran

Flemming Ejlersen

Jeremy Hurault

Fons Rob

Carlos León Arce

Guannan Wang

Thomas Buhl

Dongke Sun

Olaf MÜLLER

Ines WÜRTH

The present disclosure relates to devices for wind turbine blades and methods for reducing vibrations in wind turbines with a rotor in standstill. A device comprises a portion configured to protrude beyond a leading edge of a wind turbine blade in a local chordwise direction. The portion configured to protrude beyond the leading edge is configured to at least partially form an air channel in front of the leading edge.

Device and method for mitigating vibrations in wind turbine blades

A noise reduction element extends between a first end and a second end in a first direction. The noise reduction element extends between a third end and a fourth end in a second direction perpendicular to the first direction. The noise reduction element includes a base part configured to be attached to a trailing edge of a wind turbine blade. The base part has a first base part surface and a second base part surface. The base part extends between the first end and a first position in the first direction. The noise reduction element includes a first serration part having a serration pressure surface and a serration suction surface and extending in the first direction between the first position and the second end. The first serration part has a thickness in a third direction between the serration pressure surface and the serration suction surface.

Noise reduction element and a wind turbine blade comprising a noise reduction element

A blade damping device for damping vibrations during standstill of a wind turbine blade, wherein the blade damping device is adapted to be detachably attached to the pressure side and/or the suction side of the airfoil region of the wind turbine blade, the blade damping device comprising a base plate adapted to conform to the exterior shape of the wind turbine blade when the blade damping device is attached to the wind turbine blade, and a spoiler protruding from the base plate to a spoiler height along a height direction and having a spoiler length along a length direction, the height direction being adapted to extend outwardly from the wind turbine blade, wherein the spoiler height is adapted to be at least 20% of a chord line located at two thirds of the blade length along the longitudinal axis from the root end of the wind turbine blade.

Wind turbine blade damping device

The present disclosure relates to devices () for wind turbine blades () and methods for reducing vibrations in wind turbines (). More particularly, the present disclosure relates to devices () for mitigating vortex induced vibrations and stall induced vibrations, wind turbine blades () comprising such devices (), and methods for reducing wind turbine vibrations when the wind turbine () is parked, especially during wind turbine installation and/or maintenance. A device () comprises a proximal support () configured to be arranged around a first portion () of a wind turbine blade (), a distal support () configured to be arranged around a second portion () of the wind turbine blade (), and a barrier () extending between the proximal support () and the distal support (). The first portion () of the wind turbine blade () is at a different longitudinal position along the blade () than the second portion (). The proximal () and distal () supports are configured to provide a gap () between the barrier () and a wind turbine blade surface.

Devices and methods for mitigating vibrations in wind turbines

A vortex generator device for a wind turbine blade, and a wind turbine blade is disclosed, the vortex generator device comprising a base with an inner side and an outer side, and a first fin protruding from the outer side and extending along a first fin axis, wherein the vortex generator device is a single-fin vortex generator device, and the base has a first edge part and a second edge part, the first edge part and the second edge part forming a primary angle in the range from 5 degrees to 60 degrees.

Vortex generator device for a wind turbine blade

This invention relates to an airfoil modifying device, a wind turbine blade and a method of modifying an airfoil profile of the wind turbine blade. The airfoil modifying device comprises a deformable element connected to a filler element, both configured to deform between a retracted position and an extended position. The airfoil modifying device is passively deformed by the local air pressure acting on the blade surface and thus the airfoil modifying device.

Wind turbine blade and a method of operating such a wind turbine blade

The present invention relates to a wind turbine blade () comprising two or more serrations () provided along a section (S) of the trailing edge (). The section (S) extends spanwise from the tip end () towards the root end () for up to 5% of the total blade length (L), The serration () closest to the tip end has a height (H) and/or width (W) greater than the respective height (H) and/or width (W) of at least one other serration () in said section. The present invention also relates to a wind turbine () comprising at least one wind turbine blade () of the present invention and to a serrated panel ().

Wind turbine blade with tip end serrations

A particular arrangement of vortex generators for an airfoil is described. The vortex generators are provided in pairs, preferably on a wind turbine blade, wherein by arranging the vortex generators according to specified characteristics, a surprising improvement in blade performance is provided over the prior art systems.

Vortex generator arrangement for an airfoil

A wind turbine blade is described, as well as a trailing edge plate for a wind turbine blade. A flexible flow modulation device, e.g. an acoustic flap or a plurality of serrations, is arranged at the trailing edge of a wind turbine blade, wherein the flexible device is coupled to at least one aerodynamic device, preferably vortex generators. As the flexible device is bent by action of flow over the wind turbine blade, the at least one aerodynamic device is deployed to provide for attached flow over the bent flexible device.

Wind turbine blade having deployable aerodynamic devices

A blade () for a rotor of a wind turbine () is disclosed. The blade is assembled from an inboard blade part () closest to the hub and an outboard blade part () farthest from the hub of the wind turbine. The inboard part () comprises a load carrying structure () with a first aerodynamic shell () fitted to the load carrying structure (), and the outboard part () comprises a blade shell () with a load carrying structure () integrated in the blade shell ().

Wind turbine blade assembled from inboard part and outboard part having different types of load carrying structures

A method of retrofitting vortex generators on a wind turbine blade is disclosed, the wind turbine blade being mounted on a wind turbine hub and extending in a longitudinal direction and having a tip end and a root end, the wind turbine blade further comprising a profiled contour including a pressure side and a suction side, as well as a leading edge and a trailing edge with a chord having a chord length extending there between, the profiled contour, when being impacted by an incident airflow, generating a lift. The method comprises identifying a separation line on the suction side of the wind turbine blade, and mounting one or more vortex panels including a first vortex panel comprising at least one vortex generator on the suction side of the wind turbine blade between the separation line and the leading edge of the wind turbine blade.

Method for retrofitting vortex generators on a wind turbine blade

Disclosed is a wind turbine blade and a method for retrofitting a wind turbine blade, the wind turbine blade extending in a longitudinal direction along a pitch axis and having a tip end and a root end as well as a blade length, the wind turbine blade further comprising a profiled contour including a pressure side and a suction side, as well as a leading edge and a trailing edge with a chord having a chord length extending there between, the profiled contour, when being impacted by an incident airflow generating a lift, wherein the suction side of the wind turbine blade is provided with a plurality of vortex generators positioned along a mounting line having a proximal end point nearest the root end and a distal end point nearest the tip end, wherein the mounting line is a concave line seen from the trailing edge of the wind turbine blade.

Wind turbine blade comprising vortex generators

A wind turbine blade is described wherein at least one stall fence is provided on the blade surface, where the stall fence is arranged such that it extends at an angle to the chord of the blade. The stall fence acts to re-direct airflow over the blade, to improve wind turbine performance. The stall fence may be a provided towards the blade root end, acting to divert airflow towards the root end of the blade to prevent separation of attached airflow. Additionally or alternatively, the stall fence may be arranged as a flow diverter provided towards the blade tip end, to increase airflow in the tip region for increased performance and/or to disrupt the formation of tip vortices.

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Gesten, Denmark

Jesper Madsen