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公开(公告)号：US20220282701A1
公开(公告)日：2022-09-08
申请号：US17641141
申请日：2020-07-22
IPC分类号： F03D7/02
摘要： A method of controlling a wind turbine includes the step of boosting the output power of the wind turbine above the nominal power of the wind turbine, according to a boost operational function representing a boost level for the wind turbine. The boost operational function is a crescent function of an operational variable at least between a first threshold value and a second threshold value of the operational variable.
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公开(公告)号：US20240110546A1
公开(公告)日：2024-04-04
申请号：US18276418
申请日：2022-01-20
IPC分类号： F03D17/00
CPC分类号： F03D17/012 , F05B2270/17 , F05B2270/33 , F05B2270/802 , F05B2270/808
摘要： A method of determining a distance between a rotor blade tip and a tower of a wind turbine includes: estimating the distance based on a strain measurement; measuring the distance; correcting an estimation procedure based on the estimated distance and the measured distance; and deriving a corrected distance based on the corrected estimation procedure.
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公开(公告)号：US20240035442A1
公开(公告)日：2024-02-01
申请号：US18254391
申请日：2021-11-12
发明人： Liekele Broersma , Peder Bay Enevoldsen , Alejandro Gomez Gonzalez , Erik Steven Haugen , Bjarne Skovmose Kallesøe
CPC分类号： F03D7/0232 , F03D17/011 , F03D17/028 , F03D13/401 , F05B2240/3052 , F05B2260/83 , F05B2270/32 , F05B2270/321 , F05B2270/327 , F05B2260/02
摘要： A load mitigation arrangement of a non-mounted rotor blade, includes at least one actuatable lift-modification device arranged on a surface of the rotor blade; a monitor configured to estimate the magnitudes of loads acting on the non-mounted rotor blade; a controller configured to actuate the lift-modification device on the basis of the estimated magnitudes to mitigate the loads acting on the non-mounted rotor blade. Further provided is a rotor blade assembly, and a method of performing load mitigation on a non-mounted rotor blade.
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4.发明授权公开(公告)号：US11905932B2
公开(公告)日：2024-02-20
申请号：US17928017
申请日：2021-05-21
IPC分类号： F03D7/02
CPC分类号： F03D7/0276 , F05B2260/96 , F05B2270/1011 , F05B2270/327 , F05B2270/404 , F05B2270/708
摘要： A device and a method of controlling blade instabilities of a wind turbine is provided. The method including the following steps: defining at least one preliminary overspeed threshold value; defining a fluttering rotor speed at and above which a predetermined fluttering of at least one of the blades occurs, the fluttering rotor speed is defined as a function of the pitch angle and/or as a function of the wind speed; setting a final overspeed threshold value to be equal to or smaller than a minimum rotor speed of the at least one preliminary overspeed threshold value and the fluttering rotor speed at the actual pitch angle and/or at the actual wind speed; and controlling the rotor speed to not exceed the final overspeed threshold value.
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公开(公告)号：US20230175485A1
公开(公告)日：2023-06-08
申请号：US17924233
申请日：2021-04-29
IPC分类号： F03D7/02
CPC分类号： F03D7/0276 , F05B2270/204 , F05B2270/327 , F05B2270/328 , F05B2270/329 , F05B2270/1033
摘要： A control arrangement for a variable-speed wind turbine includes a loading analysis module configured to analyse a number of environment values to establish whether the momentary wind turbine loading is lower than a loading threshold when the rotational speed of the aerodynamic rotor has reached its rated value; and a speed boost module configured to determine a speed increment for the rotational speed of the aerodynamic rotor if the wind turbine loading is lower than the loading threshold.
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