Rotor blade with serrations
    2.
    发明授权

    公开(公告)号:US11220993B2

    公开(公告)日:2022-01-11

    申请号:US15574290

    申请日:2016-04-15

    IPC分类号: F03D1/06 B32B3/30 B32B5/18

    摘要: A method using machine learned, scenario based control heuristics including: providing a simulation model for predicting a system state vector of the dynamical system in time based on a current scenario parameter vector and a control vector; using a Model Predictive Control, MPC, algorithm to provide the control vector during a simulation of the dynamical system using the simulation model for different scenario parameter vectors and initial system state vectors; calculating a scenario parameter vector and initial system state vector a resulting optimal control value by the MPC algorithm; generating machine learned control heuristics approximating the relationship between the corresponding scenario parameter vector and the initial system state vector for the resulting optimal control value using a machine learning algorithm; and using the generated machine learned control heuristics to control the complex dynamical system modelled by the simulation model.

    Noise reduction means for a wind turbine blade, wind turbine blade, wind turbine, and method for noise reduction for a wind turbine blade

    公开(公告)号:US11384732B2

    公开(公告)日:2022-07-12

    申请号:US16927232

    申请日:2020-07-13

    IPC分类号: F03D7/02 F03D1/06

    摘要: Provided is a noise reduction means for a wind turbine blade comprising an active noise reduction device and a passive noise reduction device, wherein the passive noise reduction device comprises at least one serrated edge profile adapted for fixation to a trailing edge of the wind turbine blade, wherein the active noise reduction device comprises at least one unsteady pressure sensor adapted to produce an output signal corresponding to a turbulent flow condition during operation of the wind turbine blade, at least one actuator and a control unit, wherein the sensor is arranged adjacent to a serrated edge of the serrated edge profile and the control unit is adapted to control the actuator in dependence of the output signal of the sensor to emit an anti-noise signal at least partly reducing the noise generated by the wind turbine blade.

    NOISE REDUCTION MEANS FOR A WIND TURBINE BLADE, WIND TURBINE BLADE, WIND TURBINE, AND METHOD FOR NOISE REDUCTION FOR A WIND TURBINE BLADE

    公开(公告)号:US20220010774A1

    公开(公告)日:2022-01-13

    申请号:US16927232

    申请日:2020-07-13

    IPC分类号: F03D7/02 F03D1/06

    摘要: Provided is a noise reduction means for a wind turbine blade comprising an active noise reduction device and a passive noise reduction device, wherein the passive noise reduction device comprises at least one serrated edge profile adapted for fixation to a trailing edge of the wind turbine blade, wherein the active noise reduction device comprises at least one unsteady pressure sensor adapted to produce an output signal corresponding to a turbulent flow condition during operation of the wind turbine blade, at least one actuator and a control unit, wherein the sensor is arranged adjacent to a serrated edge of the serrated edge profile and the control unit is adapted to control the actuator in dependence of the output signal of the sensor to emit an anti-noise signal at least partly reducing the noise generated by the wind turbine blade.

    Rotor blade with a serrated trailing edge

    公开(公告)号:US11002246B2

    公开(公告)日:2021-05-11

    申请号:US16093843

    申请日:2016-11-22

    IPC分类号: F03D1/06 F03D7/02

    摘要: A rotor blade for a wind turbine, wherein the rotor blade includes serrations along at least a portion of the trailing edge section of the rotor blade is provided. The serrations include a first tooth and at least a second tooth, wherein the first tooth is spaced apart from the second tooth. Furthermore, the area between the first tooth and the second tooth is at least partially filled with a plurality of comb elements, wherein the comb elements are arranged substantially parallel to each other and in substantially chordwise direction of the rotor blade such that generation of noise in the trailing edge section of the rotor blade is reduced. The rotor blade is further characterized in that it includes a plurality of ridges including a first ridge and at least a second ridge for manipulating an airflow which is flowing along the ridges.