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公开(公告)号：US10920747B2
公开(公告)日：2021-02-16
申请号：US15767258
申请日：2016-10-11
发明人： Martin Ansbjerg Kjær , Frank Møller Hansen , Jacob Hviid Nielsen , Jesper Lykkegaard Neubauer , Poul Brandt Christensen , Fabio Caponetti , Christian Skallebæk , Robert Grøn-Stevens , Kasper Zinck Østergaard
IPC分类号： F03D7/02
摘要： There is provided a method for controlling a hydraulic pitch force system (220) so as to reduce or eliminate a decrease in hydraulic oil pressure (241) if a hydraulic system parameter value is outside a hydraulic system parameter range, the method comprising: Obtaining (690) the hydraulic system parameter value, and operating the hydraulic pitch force system (220) according to a reduced mode (692) if the hydraulic system parameter value is outside the hydraulic system parameter range, wherein in the reduced mode one or more pitch based activities are reduced (694) or suspended. An advantage thereof may be that it enables keeping the wind turbine in production in certain instances rather than shutting down the wind turbine. In aspects, there is furthermore presented a computer program product, a pitch control system (250) and a wind turbine (100).
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公开(公告)号：US10655602B2
公开(公告)日：2020-05-19
申请号：US15767268
申请日：2016-10-11
摘要： There is provided a pitch control system (210) for controlling a pitch force system (220) for pitching a blade (103) of a wind turbine (100), the pitch control system (210) being arranged for activating (682) an auxiliary pitch force subsystem (224) at an initiation point in time where a main pitch force is sufficient to pitch the blade (103) into a target pitch value. An advantage thereof may be that tracking of a target pitch value may be improved and the impact on the pitch force system (220) may be reduced. In aspects, there is furthermore presented a hydraulic pitch system (206), a wind turbine (100), a method and a computer program product.
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公开(公告)号：US20190154001A1
公开(公告)日：2019-05-23
申请号：US16091374
申请日：2017-04-07
CPC分类号： F03D7/0296 , F03D7/0224 , F03D7/0276 , F03D7/042 , F03D17/00 , F05B2260/70 , F05B2260/96 , F05B2270/101 , F05B2270/807 , Y02E10/723
摘要： A method of controlling a wind turbine comprising at least one rotor blade, and at least one accelerometer housed within a nacelle or a tower of the wind turbine. The method comprises: determining a whirling mode frequency for the wind turbine; measuring an acceleration signal that is indicative of the movement of the nacelle of the wind turbine; determining a frequency spectrum of the measured acceleration signal in the proximity of the determined whirling mode frequency; determining a characteristic value that is representative of the energy content of the measured acceleration signal having the determined frequency spectrum; and performing at least one control action if the characteristic value exceeds a predetermined threshold.
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公开(公告)号：US10738762B2
公开(公告)日：2020-08-11
申请号：US16091374
申请日：2017-04-07
摘要： A method of controlling a wind turbine comprising at least one rotor blade, and at least one accelerometer housed within a nacelle or a tower of the wind turbine. The method comprises: determining a whirling mode frequency for the wind turbine; measuring an acceleration signal that is indicative of the movement of the nacelle of the wind turbine; determining a frequency spectrum of the measured acceleration signal in the proximity of the determined whirling mode frequency; determining a characteristic value that is representative of the energy content of the measured acceleration signal having the determined frequency spectrum; and performing at least one control action if the characteristic value exceeds a predetermined threshold.
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公开(公告)号：US20190078555A1
公开(公告)日：2019-03-14
申请号：US15767258
申请日：2016-10-11
发明人： Martin Ansbjerg Kjær , Frank Møller Hansen , Jacob Hviid Nielsen , Jesper Lykkegaard Neubauer , Poul Brandt Christensen , Fabio Caponetti , Christian Skallebæk , Robert Grøn-Stevens , Kasper Zinck Østergaard
IPC分类号： F03D7/02
摘要： There is provided a method for controlling a hydraulic pitch force system (220) so as to reduce or eliminate a decrease in hydraulic oil pressure (241) if a hydraulic system parameter value is outside a hydraulic system parameter range, the method comprising: Obtaining (690) the hydraulic system parameter value, and operating the hydraulic pitch force system (220) according to a reduced mode (692) if the hydraulic system parameter value is outside the hydraulic system parameter range, wherein in the reduced mode one or more pitch based activities are reduced (694) or suspended. An advantage thereof may be that it enables keeping the wind turbine in production in certain instances rather than shutting down the wind turbine. In aspects, there is furthermore presented a computer program product, a pitch control system (250) and a wind turbine (100).
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公开(公告)号：US20190055922A1
公开(公告)日：2019-02-21
申请号：US15767268
申请日：2016-10-11
摘要： There is provided a pitch control system (210) for controlling a pitch force system (220) for pitching a blade (103) of a wind turbine (100), the pitch control system (210) being arranged for activating (682) an auxiliary pitch force subsystem (224) at an initiation point in time where a main pitch force is sufficient to pitch the blade (103) into a target pitch value. An advantage thereof may be that tracking of a target pitch value may be improved and the impact on the pitch force system (220) may be reduced. In aspects, there is furthermore presented a hydraulic pitch system (206), a wind turbine (100), a method and a computer program product.
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