公开(公告)号：US20160208781A1

公开(公告)日：2016-07-21

申请号：US14916618

申请日：2014-09-03

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Martin Ansbjerg KJÆR ,  Peter KOLDKJÆR ,  Mølgaard Hviid KNUDSEN ,  Maryam SOLEIMANZADEH ,  Martin Møller SØRENSEN ,  Ali ZAIB ,  Arvishwa Kumar SINGH ,  Poul Brandt CHRISTENSEN ,  Michael Houlind JENSEN

IPC: F03D7/02 ,  G05F1/66 ,  F03D9/00 ,  F03D7/04 ,  F03D1/06

CPC classification number: F03D7/028 ,  F03D1/06 ,  F03D7/0272 ,  F03D7/042 ,  F03D7/047 ,  F03D9/25 ,  F05B2270/332 ,  G05F1/66 ,  Y02E10/721 ,  Y02E10/723

Abstract: To efficiently nm a wind turbine in varying wind speeds, the wind turbine may be configured to switch between two different electrical configurations that offer different efficiencies depending on wind speed. For example, a star configuration may be preferred during low wind speeds while a delta configuration is preferred for high wind speeds. Before switching, the power output by the turbine's generator may be driven to zero. Doing so, however, removes load from the rotor blades which cause the rotor speed to increase. Instead, the rotor speed may be controlled such that the speed stays at or above the speed of the rotor immediately before the generator power is ramped down. Maintaining rotor speed at or slightly above the current speed while switching between electrical configurations may mitigate the torque change experienced by the turbine and reduce the likelihood of structural failure.

Abstract translation: 为了有效地在不同的风速下对风力涡轮机进行nm风轮机，风力涡轮机可以被配置为在取决于风速的不同效率的两种不同的电气配置之间切换。 例如，在低风速期间，星型配置可能是优选的，而对于高风速，优选配置三角形配置。 在切换之前，涡轮发电机输出的功率可能被驱动到零。 然而，这样做可以消除转子叶片的负载，导致转子速度增加。 相反，可以控制转子速度，使得在发电机功率下降之前，转速保持等于或高于转子的速度。 在转换电气配置之前，将转子速度保持在或稍高于当前速度，可以减轻涡轮机所经历的转矩变化并降低结构故障的可能性。

公开(公告)号：US20160305402A1

公开(公告)日：2016-10-20

申请号：US15037902

申请日：2014-11-19

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Fabio CAPONETTI ,  Ian COUCHMAN ,  Thomas KRÜGER ,  Ali ZAIB ,  Carsten Nørlund THOMSEN

IPC: F03D7/02 ,  H02J11/00 ,  H02K7/18 ,  F03D9/00 ,  F03D9/25

Abstract: The invention relates to a control apparatus and method for controlling the rotor blades of a wind turbine, and in particular to controlling the rotor blades during an extreme wind event. An extended mode of operation of the wind turbine rotor beyond the cut-out wind speed is provided. In the extended mode of operation, the pitch of the wind turbine blades is actively controlled so that the rotor and the generator idle at a designated rotational speed. The rotational speed may be relatively high, say 15 to 20% of the nominal speed, compared with minimal speeds experienced by purely feathered wind turbine blades, and may be further controlled as a function of the incident wind speed. Output power control in the extended mode may be zero but is preferably a low, but non-zero value. The output power so produced may then be used as an auxiliary power source for controlling the wind turbine in situations where the utility grid fails.

Abstract translation: 本发明涉及一种用于控制风力涡轮机的转子叶片的控制装置和方法，特别涉及在极端风力事件期间控制转子叶片。 提供了超出切断风速的风力涡轮机转子的延长操作模式。 在扩展操作模式中，主动控制风力涡轮机叶片的桨距，使得转子和发电机以指定的转速空转。 与纯羽毛风力涡轮机叶片所经历的最小速度相比，旋转速度可以相对较高，例如额定速度的15至20％，并且可以作为入射风速的函数进一步控制。 扩展模式下的输出功率控制可以为零，但优选为低但非零值。 这样产生的输出功率然后可以用作在公用电网故障的情况下控制风力涡轮机的辅助电源。

公开(公告)号：US20190113022A1

公开(公告)日：2019-04-18

申请号：US16088419

申请日：2017-03-30

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Jacob Deleuran GRUNNET ,  Thomas KRÜGER ,  Ali ZAIB ,  Jesper Sandberg THOMSEN

IPC: F03D7/04 ,  F03D7/02

Abstract: A wind turbine control system comprising at least one control module configured to output a control signal for a control mechanism of a wind turbine, and a gain calculator for calculating a gain parameter associated with the control module, wherein the gain parameter is calculated based on a computerized real-time blade model using a determined wind turbine operating point as an input. The blade model may be a blade element momentum model. In another aspect, the invention may be expressed as a method of controlling a control mechanism of a wind turbine.