-
公开(公告)号：US20190226445A1
公开(公告)日：2019-07-25
申请号：US16301654
申请日：2017-05-16
摘要： Aspects of the present disclosure are generally directed to configurations of power conversion systems for wind turbine generators. For example, certain aspects are directed to a multi-rotor wind turbine. The multi-rotor wind turbine generally includes a plurality of rotors, each coupled to a plurality of electrical generators, one or more machine-side converters, MSCs, coupled to the electrical generators of each of the plurality of rotors and configured to generate at least one direct-current, DC, signal, and one or more line-side converters, LSCs, coupled to the MSCs and configured to generate at least one AC signal based on the at least one DC signal.
-
公开(公告)号：US20170151711A1
公开(公告)日：2017-06-01
申请号：US15320030
申请日：2015-06-24
CPC分类号： B29C65/7838 , B29C65/48 , B29C65/483 , B29C65/7802 , B29C65/7805 , B29C65/7841 , B29C66/112 , B29C66/1122 , B29C66/114 , B29C66/1142 , B29C66/131 , B29C66/1312 , B29C66/301 , B29C66/524 , B29C66/54 , B29C66/547 , B29C66/61 , B29C66/636 , B29C66/71 , B29C66/721 , B29C66/7212 , B29K2309/08 , B29L2031/085 , F03D1/0675 , F05B2230/50 , F05B2240/21 , F05B2280/4002 , F05B2280/4003 , F05B2280/6012 , Y02E10/721 , Y02P70/523 , B29K2075/00 , B29K2025/06
摘要： A method of making a wind turbine blade, and the turbine blade resulting form the process, is described in which correct alignment of the shear webs (42a, 42b) upon mould (30) closing is ensured. The method involves providing a first half shell (32a) and a second half shell (32b) to be joined together to form the wind turbine blade. A first edge (46) of a shear web (42) is attached to an inner surface (36a) of the first half shell (32a). A shear web mounting region is defined on an inner surface (36b) of the second half shell (32b). At least one guide block (60a, 60b) is attached to the inner surface (36b) of the second half shell (32b) adjacent to the shear web (42) mounting region. The guide block (60a, 60b) has a guide surface (70) oriented transversely to the inner surface of the second half shell (36b). Upon mould (30) closing, the first and second half shells (32a, 32b) are brought together whilst a second edge (52) of the shear web (42) is guided over the guide surface (70) of the mounting block (60a, 60b) towards the shear web mounting region defined on the inner surface (36b) of the second half shell (32b).
-
公开(公告)号：US20160248246A1
公开(公告)日：2016-08-25
申请号：US15026181
申请日：2014-09-17
发明人： Lars HELLE , Remus TEODORESCU
CPC分类号： H02H7/26 , F03D7/0284 , F03D9/255 , F05B2260/80 , H02H3/083 , H02H3/24 , H02M5/458 , Y02E10/723
摘要： A wind turbine generator 1 is connected to a section 2 of an electricity grid 3 via a converter 4, which converts the ac output power from the generator into three-phase electric power at the voltage and frequency of the grid 3. The converter 4 comprises silicon carbide transistors which act as ON-OFF switches which are controlled so as to create a voltage profile which is the same as that of the grid voltage. Each grid section 2, 2′ has a respective circuit breaker 10, 10′ which disconnects the associated section from the remainder of the grid 3 in the event of an abnormally high current. The converter 2 includes a fault detector 11 arranged to detect grid faults, such as an abnormally low voltage level which, in response, generates an alarm signal which causes a high-level transient current to be supplied to the grid 3 sufficient to trip the circuit breaker 10′ so as to disconnect the faulty section of the grid. By using silicon carbide transistors, which can withstand high operating temperatures, a higher-level current can be generated than would be the case with converters using conventional silicon transistors.
摘要翻译： 风力发电机1经由转换器4连接到电网3的部分2，转换器4将来自发电机的交流输出功率以电网3的电压和频率转换成三相电力。转换器4包括 用作开关开关的碳化硅晶体管，其被控制以产生与电网电压相同的电压分布。 每个电网部分2,2'都有一个相应的断路器10,10'，它们在异常高电流的情况下将相关部分与电网3的其余部分断开。 转换器2包括故障检测器11，其被布置成检测电网故障，例如异常低的电压电平，其响应地产生报警信号，其引起高电平瞬态电流被提供给电网3，足以使电路跳闸 断路器10'，以便断开电网的故障部分。 通过使用可承受高工作温度的碳化硅晶体管，可以产生比使用常规硅晶体管的转换器情况更高的电流。
-
公开(公告)号：US20160123303A1
公开(公告)日：2016-05-05
申请号：US14897825
申请日：2014-06-11
发明人： Borge Ollgaard , Soren P. Jensen
CPC分类号： F03D7/0296 , E04B1/985 , E04H12/00 , F03D13/20 , F03D80/00 , F03D80/88 , F05B2250/231 , F05B2260/964 , F16F7/10 , Y02E10/726
摘要： The present invention relates to wind turbine towers and in particular to such towers having a damper for use when erecting the tower and prior to installing a nacelle on the top of the tower. The invention also relates to a method for damping wind turbine towers. One aspect of the invention involves a wind turbine tower (2) with an upper tower structure (24) and a damper (5) comprising, —a liquidless damper housing (7,8) fixed to the upper structure, —a cylindrical interior surface of the damper housing, and—a damper mass having a horizontal extent which is less than a horizontal extent of the cylindrical interior surface of the damper housing, and—at least one shock absorbing structure, where the damper mass is arranged to, when the tower oscillates, essentially stay in a standstill location, whereby a relative movement between the tower and the damper mass may cause an impact with between the tower mass and the shock absorbing structure dependent on the magnitude of the amplitude of the tower oscillation. A main technical progress is that the damper does not need detailed tuning to the towers natural frequency. As long as the damper mass is sufficient, it may be used for damping a range of tower sizes and heights.
摘要翻译： 技术领域本发明涉及风力涡轮机塔架，特别涉及具有用于在架设塔架时以及在塔架顶部安装机舱之前使用的阻尼器的塔架。 本发明还涉及一种用于阻尼风力涡轮机塔架的方法。 本发明的一个方面涉及具有上部塔架结构（24）和阻尼器（5）的风力涡轮机塔架（2），该风力涡轮机塔架包括固定到上部结构的无液体阻尼器壳体（7,8）， - 圆柱形内表面 并且具有水平范围小于所述阻尼器壳体的圆柱形内表面的水平范围的阻尼器块，以及至少一个减震器组件，其中所述阻尼器块布置成当所述阻尼器块被布置成 塔基本上停留在停止位置，由此塔和阻尼块之间的相对运动可能导致塔体和冲击吸收结构之间的相对运动，这取决于塔架振荡幅度的大小。 主要的技术进步是阻尼器不需要对塔固有频率进行详细的调谐。 只要阻尼器质量足够，它可以用于阻尼塔尺寸和高度的范围。
-
公开(公告)号：US20200332778A1
公开(公告)日：2020-10-22
申请号：US16332644
申请日：2017-09-06
摘要： A nacelle bottom cover part (32) for the underside of a wind turbine nacelle is formed with a number of shallow receptacle g re ions for containing liquid leaked or spilled from turbine components. Overflow channels (88,90,92) may be provided between the receptacle regions so that leaked liquid can flow between receptacle regions.
-
公开(公告)号：US20200318613A1
公开(公告)日：2020-10-08
申请号：US16303946
申请日：2017-05-24
发明人： Kim Hylling SØRENSEN
摘要： The invention relates to a wind turbine system with a plurality of wind turbine modules each with a rotor. A control system is arranged to execute a shutdown procedure with a first control command for terminating power production from a first subset of wind turbine modules resulting in a thrust force change with a reduced thrust force from the wind on a first part of the support structure carrying the first subset of wind turbine modules. A second control command is applied to a second subset of wind turbine modules for enabling thrust control of the second subset of wind turbine modules to oppose the thrust force change at the first part. Thus, there is obtained an improved and cost-effective way of stabilizing a wind turbine system with multiple rotors during shutdown.
-
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).
-
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.
-
公开(公告)号：US20190085823A1
公开(公告)日：2019-03-21
申请号：US16088268
申请日：2017-04-04
CPC分类号： F03D7/0224 , F03D1/00 , F03D7/0272 , F03D7/0296 , F03D7/04 , F03D13/20 , F03D17/00 , F05B2220/30 , F05B2240/221 , F05B2240/30 , F05B2240/912 , F05B2260/71 , F05B2260/74 , F05B2260/80 , F05B2260/821 , F05B2260/96 , F05B2270/1032 , F05B2270/1033 , F05B2270/20 , F05B2270/304 , F05B2270/334 , F05B2270/335 , F05B2270/402 , F05B2270/807 , G05B17/02 , Y02E10/723 , Y02E10/728
摘要： The invention relates to control of a wind turbine comprising a plurality of multi-axial accelerometers mounted at different positions in the nacelle and/or in a top portion of the tower. The position and orientation of each accelerometer as mounted is obtained, accelerations in at least two different directions by each accelerometer are measured during operation of the wind turbine. From a number of predetermined mode shapes for the movement of the wind turbine is then determined an absolute position of at least one of the accelerometers during operation of the wind turbine based on the measured accelerations, the mount position and orientation of each accelerometer and the pre-determined mode shapes. Hereby a more precise absolute position during operation is obtained which can be used in the controlling of the turbine.
-
公开(公告)号：US20180266392A1
公开(公告)日：2018-09-20
申请号：US15764454
申请日：2016-10-04
摘要： The present disclosure relates to a control of a wind turbine in connection with power boosting or fast increase of active power production. A boost command is received (63) and based on the current operational state and the boost level a predicted control trajectory is calculated using a model predictive control (MPC) routine (64). The wind turbine is controlled using the calculated control trajectory during the power boost (65).
-
-
-
-
-
-
-
-
-
搜索结果
2382 条记录 (耗时 0.03 秒)
