Vestas Wind Systems A/s

Robert Thomas Rudolf

Thomas S Bjertrup Nielsen

Torben Juul Larsen

Mikkel Kiilerich Østerlund

Peter Bøttcher

Mohammed Fajar

Mikkel Kiilerich ØSterlund

A wind turbine comprising includes a tower, a nacelle mounted on the tower, and a rotor mounted to the nacelle. The rotor comprises a hub and at least three pitchable wind turbine blades connected to the hub via respective pitch mechanisms. The airfoil profile of each blade has a thickness being the greatest distance between the windward and leeward sides orthogonal to the chord. Each blade comprises a connection point located at a first radial position between the blade root and the blade tip. The wind turbine further comprises one or more blade connecting members connected between the connection point and a corresponding connection point on a neighbouring blade. The thickness and/or the relative thickness of each blade is substantially constant or has a local minimum within an inboard portion of the blade between the blade root and the connection point.

Wind turbine

A pitch controlled wind turbine () comprising a tower (), a nacelle () mounted on the tower (), a hub () mounted rotatably on the nacelle (), and at least three wind turbine blades () is disclosed. Each wind turbine blade () extends between a root end () connected to the hub (), and a tip end (). The wind turbine () further comprises at least three blade connecting members (), each blade connecting member () extending between a connection point () on one wind turbine blade () and a connection point () on a neighbouring wind turbine blade (). The wind turbine blades () each comprises an inboard blade part () comprising the root end () and an outboard blade part () comprising the tip end (), the inboard blade part () and the outboard blade part () being connected to each other at a split position (). The split position () is arranged between the root end () and the connection point ().

Pitch controlled wind turbine with blade connecting members and split blades

A pitch controlled wind turbine comprising a tower, a nacelle mounted on the tower, a hub mounted rotatably on the nacelle, and at least three wind turbine blades is disclosed. Each wind turbine blade extends between a root end connected to the hub via a pitch mechanism, and a tip end. The wind turbine further comprises at least three blade connecting members, each blade connecting member extending between a connection point on one wind turbine blade and a connection point on a neighboring wind turbine blade, the connection points being arranged at a distance from the root end and at a distance from the tip end of the wind turbine blade. The wind turbine further comprises at least three pre-tension members, each pre-tension member being connected to one of the blade connecting members and to a hub part, the pre-tension members thereby providing pre-tension in the blade connecting members.

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Aarhus C, Denmark

Robert Thomas Rudolf