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公开(公告)号：US10344740B2
公开(公告)日：2019-07-09
申请号：US15269839
申请日：2016-09-19
发明人： Fabio Caponetti , Per Brath , Keld Hammerum , Johnny Nielsen
摘要： A method of detecting a fault mode of a sensor is provided. The sensor may be, for example, a bending moment sensor and may sense a bending moment of a blade on a wind turbine generator (WTG). The method includes comparing data output by a first sensor with reference data indicating what is expected to be output by the first sensor to produce a first comparison result and comparing data output by the first sensor with data output by a second sensor to produce a second comparison result. A determination of whether the first sensor has entered a fault mode is made based at least in part on the first and second comparison results.
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2.发明申请公开(公告)号：US20150132129A1
公开(公告)日：2015-05-14
申请号：US14406409
申请日：2013-06-07
发明人： Martin Atzler , Per Brath , Thomas Krüger , Ali Zaib
CPC分类号： F03D7/044 , F03D7/0224 , F03D7/024 , F03D7/0296 , F03D7/043 , F05B2260/966 , F05B2270/331 , Y02E10/723
摘要： A method of operating a wind turbine is provided. The wind turbine comprises a turbine rotor with at least two blades, each blade having a variable pitch angle. The method comprises determining mechanical loads on the blades, determining an asymmetric load moment experienced by the turbine rotor based on the mechanical loads on the blades, determining high order harmonics from the asymmetric load moment, and determining an individual pitch control signal for each of the blades for varying the pitch angle of each blade to compensate for the asymmetric load moment. The individual pitch control signal for each blade is determined at least based on the high order harmonics.
摘要翻译： 提供了一种操作风力涡轮机的方法。 风力涡轮机包括具有至少两个叶片的涡轮转子，每个叶片具有可变的俯仰角。 该方法包括确定叶片上的机械载荷，基于叶片上的机械负载确定涡轮转子经历的不对称载荷力矩，从非对称载荷力矩确定高次谐波，以及确定每个 用于改变每个叶片的俯仰角以补偿不对称载荷力矩的叶片。 至少基于高阶谐波确定每个叶片的各个俯仰控制信号。
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公开(公告)号：US10364796B2
公开(公告)日：2019-07-30
申请号：US15022876
申请日：2014-09-16
摘要： The invention relates to a method of controlling a wind turbine, the wind turbine comprising wind turbine blades attached to a rotor hub and a control system for pitching the blades relative to the hub. The method comprises providing wake sectors assigned to different wind directions and providing a normal pitch schedule to control an output parameter of the wind turbine (e.g. power, rotational speed), comprising pitch reference values as a function of the wind speed and at least one of the parameters of thrust coefficient Ct and axial induction factor a. Further, is provided a modified pitch schedule to control a modified output parameter of the wind turbine, comprising pitch reference values in dependence of the wind speed and at least one modified parameter of the thrust coefficient and/or the axial induction factor. Upon receiving indications of a wind speed and a wind direction at the wind turbine is determined a pitch reference value for the wind turbine blades according to the normal pitch schedule if the wind direction falls outside the wake sector and otherwise according to the modified pitch schedule. The wind turbine is then controlled according to the pitch reference value. The invention further relates to a method of controlling the wind turbines in a wind park, wherein each wind turbine in the park is controlled locally according to the above mentioned control method.
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公开(公告)号：US09835137B2
公开(公告)日：2017-12-05
申请号：US14406409
申请日：2013-06-07
发明人： Martin Atzler , Per Brath , Thomas Krüger , Ali Zaib
CPC分类号： F03D7/044 , F03D7/0224 , F03D7/024 , F03D7/0296 , F03D7/043 , F05B2260/966 , F05B2270/331 , Y02E10/723
摘要： A method of operating a wind turbine is provided. The wind turbine comprises a turbine rotor with at least two blades, each blade having a variable pitch angle. The method comprises determining mechanical loads on the blades, determining an asymmetric load moment experienced by the turbine rotor based on the mechanical loads on the blades, determining high order harmonics from the asymmetric load moment, and determining an individual pitch control signal for each of the blades for varying the pitch angle of each blade to compensate for the asymmetric load moment. The individual pitch control signal for each blade is determined at least based on the high order harmonics.
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