The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 04, 2022
Filed:
Sep. 08, 2020
Siemens Gamesa Renewable Energy A/s, Brande, DK;
Steven Buck, Boulder, CO (US);
SIEMENS GAMESA RENEWABLE ENERGY A/S, Brande, DK;
Abstract
Wind turbine comprising a tower () bearing a nacelle () and a rotor () with a plurality of rotor blades () and an active noise reduction device (), wherein the active noise reduction device () comprises at least one actuator (), at least one unsteady pressure sensor () adapted to produce an output signal corresponding to a turbulent flow condition during operation of the rotor blade (), at least one noise sensor () adapted to produce an output signal corresponding to a noise generated by the rotor blade () at the location of the noise sensor (), and a control unit (), wherein the unsteady pressure sensor () and the actuator () are arranged on at least one of the rotor blades () and the noise sensor () is arranged at the nacelle () and/or at the tower (), wherein the control unit () is adapted to control the actuator () in dependence of the output signals of the unsteady pressure sensor () and the noise sensor () to emit an anti-noise signal at least partly reducing the noise generated by the rotor blade ().