Siemens Aktiengesellschaft

Siemens Gamesa Renewable Energy A/s

Sigmund Wenningsted Torgard

Alex Loeven

Per Nielsen

Peder Bay Enevoldsen

Alejandro Gomez Gonzalez

Stefan Oerlemans

Michael J Asheim

Bodo Richert

Manjinder J Singh

Anders Smaerup Olsen

Valerio Lorenzoni

Kristoffer Ahrens Dickow

A rotor blade for a wind turbine is provided. The rotor blade includes a pressure side, a suction side, a leading edge section with a leading edge, and a trailing edge section with a trailing edge. An airflow flows along the surface of the rotor blade from the leading edge section to the trailing edge section and builds up a boundary layer in close proximity to the surface of the rotor blade. The rotor blade includes a noise reduction device for reducing noise which is generated by interaction of the airflow and the rotor blade. The noise reduction device is located within the boundary layer of the rotor blade. The noise reduction device includes a cover and connection device for connecting the cover to the surface of the rotor blade. The cover spans at least over a part of the surface of the rotor blade.

Rotor blade with noise reduction means

A device for manufacturing a composite product has a first folded layer with a first and second superposed portion extending from a respective first and second free end to a first bend connecting the first and second superposed portions, and a second folded layer with a third and fourth superposed portion extending from a respective third and fourth free end to a second bend connecting the third and fourth superposed portions, wherein the first and second folded layers are laid adjacent to each other in order that the second portion of the first folded layer is in contact with the third portion of the second folded layer, the first and second folded layers being oriented with respect to each other in order to extend from a first side including the first, second, third and fourth free ends to a second side including the first and second bend.

Device for manufacturing a composite product

A rotor blade for a wind turbine with an aerodynamic device, and an aerodynamic device is provided. The rotor blade includes a main body defining a pressure side and a suction side of the rotor blade, and includes a main body trailing edge section. The rotor blade includes an aerodynamic device with an attachment section for attaching the aerodynamic device to the main body trailing edge section, an aerodynamic section for influencing the aerodynamic properties of the rotor blade, and a buckling section for controlling the orientation and/or the shape of the aerodynamic section with regard to the main body. The aerodynamic device is configured such that it deforms elastically for a force component acting in flapwise direction on the buckling section, and deforms abruptly if a force component of about the size of the stability limit of the buckling section acts in flapwise direction on the buckling section.

Means for alleviating strain on a wind turbine rotor blade

A method for manufacturing a composite product includes folding a first layer of material to create a first folded layer having a first and a second superposed portion extending from a respective first and second free end to a first bend, folding a second layer of material in order to create a second folded layer having a third and a fourth superposed portion extending from a respective third and fourth free end to a second bend, laying the first folded layer over a first element with the first portion in contact with the first element, laying the second folded layer over the first folded layer laying a second element over the second folded layer, compressing the plurality of the fiber layers by either vacuum or gravity, pulling two free ends of the first folded layer and of the second folded layer in order to let them contact each other.

Method for manufacturing a composite product

A rotor blade with a supporting structure, wherein the rotor blade has a rotor blade base section and a rotor blade tip section, is provided. The supporting structure includes a first supporting segment for supporting the rotor blade base section and at least a second supporting segment for supporting the rotor blade tip section. Furthermore, the supporting structure includes the first supporting segment and the second supporting segment along the rotor blade longitudinal direction. The first supporting segment is joined to the second supporting segment in a supporting structure transition section, wherein the supporting structure transition section is located in between the rotor blade base section and the rotor blade tip section. Finally, the first supporting segment and/or the second supporting segment include a fiber material. A method for manufacturing the rotor blade is also provided.

Growing community of inventors

Fredericia, Denmark

Sigmund Wenningsted Torgard