Wind turbine rotor blade
OwnerRalf MESSING, Harro HARMS +2inventors
InventorsRalf MESSING, Harro HARMS, Hendrik JANSSEN, Andree ALTMIKUS
Life of this patent
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Abstract
A rotor blade of a wind power installation, comprising an inner section in which the rotor blade is fastened on a rotor hub, and an outer section, which is connected to the rotor blade and comprises a rotor blade tip. The rotor blade has at least partially a flat back profile having a truncated rear edge in the inner section, and at least one control unit for controlling the wake is provided on the rotor blade on the flat back profile.
Claims13
A wind power installation rotor blade comprising:
- an inner section having an end configured to fasten the rotor blade to a rotor hub;
- and
- an outer section including a rotor blade tip,
- wherein at least a portion of the inner section includes:
- a flat back profile having a truncated rear edge, and
- at least one flow control unit for actively controlling a wake provided on the rotor blade at the flat back profile,
- wherein the at least one flow control unit comprises at least one cylindrical body having a longitudinal axis, the at least one cylindrical body configured to be rotated about the longitudinal axis, and
- wherein the at least one flow control unit is provided on the truncated rear edge.
The wind power installation rotor blade of claim 9, wherein at least some of the plurality of cylindrical bodies can be rotated with a different rotation speed and rotation direction from one another.
A wind power installation rotor blade comprising:
- an inner section including a root section configured to fasten the rotor blade to a rotor hub, wherein the root region has a cross section that is substantially circular;
- an outer section including a rotor blade tip;
- and
- at least one flow control unit for actively controlling a wake, the at least one flow control unit being provided on the rotor blade at the cross section,
- wherein the at least one flow control unit comprises a cylindrical body having a longitudinal axis, wherein the cylindrical body is configured to be rotated about the longitudinal axis.
A method for controlling a wake of a wind power installation rotor blade comprising:
- moving an incident flow striking the rotor blade by using at least one flow control unit in such a way that the wake is reduced, the at least one flow control unit being located at a flat back profile of an inner section of the rotor blade.
Dependencies are inferred from the claim text.