公开(公告)号：US20180156196A1

公开(公告)日：2018-06-07

申请号：US15735513

申请日：2016-06-09

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Martin Ansbjerg KJÆR ,  Jesper Sandberg THOMSEN ,  Jacob Krogh KRISTOFFERSEN ,  Jacob Deleuran GRUNNET ,  Eik HERBSLEB

IPC: F03D7/02

Abstract: The invention relates to a control system for a wind turbine. The wind turbine comprises a power generator configured to generate power dependent on a power reference and a pitch system configured to adjust the pitch of a blade of the wind turbine dependent on a pitch request. The control system comprises a controller configured to determine the pitch request dependent on an adjustable gain. A gain scheduler comprised by the control system is configured to set the adjustable gain to an increased gain value if a rate of change of the power reference, e.g. an external power reference, exceeds a threshold.

公开(公告)号：US20170328342A1

公开(公告)日：2017-11-16

申请号：US15532871

申请日：2015-11-30

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Martin Ansbjerg KJÆR ,  Jesper Sandberg THOMSEN ,  Robert GRØN-STEVENS

IPC: F03D7/02 ,  H02P9/10 ,  H02J3/38 ,  F03D9/25 ,  F03D80/80 ,  H02K7/18

Abstract: The invention relates to a method for limiting structural loads in a wind turbine in situations where the power produced by the wind turbine is increased or decreased. The limitation of structural loads is achieved by restricting the power ramp rate, i.e. the rate of change of increases or decreases in produced power. The restriction is only invoked if a maximum change of the produced power or the corresponding internal power reference within a time window exceeds a given threshold.

公开(公告)号：US20170022972A1

公开(公告)日：2017-01-26

申请号：US15039769

申请日：2014-11-27

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Martin Ansbjerg KJÆR ,  Carsten Nørlund THOMSEN ,  Robert BOWYER ,  Jesper Sandberg THOMSEN

IPC: F03D7/02 ,  G05B19/406 ,  F03D1/06 ,  F03D7/04 ,  F03D9/00

CPC classification number: F03D7/0224 ,  F03D1/0675 ,  F03D7/028 ,  F03D7/0296 ,  F03D7/043 ,  F03D7/047 ,  F03D9/255 ,  F05B2270/1033 ,  F05B2270/309 ,  G05B19/406 ,  G05B2219/2619 ,  Y02E10/721 ,  Y02E10/723

Abstract: Embodiments of the present disclosure generally relate to apparatus and methods for preventing power dips associated with power ramping in wind turbines. One embodiment of the present disclosure provides a method for stabilizing power output in a wind turbine, which includes tracking a rate of change in an external reference, such as an external power reference or external torque reference, computing a feed-forward pitch angle adjustment according to the rate of change in the external power reference, and sending the feed-forward pitch angle adjustment to the wind turbine to adjust a pitch angle of rotor blades simultaneously with adjusting power output according to the external reference.

Abstract translation: 本公开的实施例一般涉及用于防止与风力涡轮机中的功率斜坡相关联的功率下降的装置和方法。 本公开的一个实施例提供了一种用于稳定风力涡轮机中的功率输出的方法，其包括跟踪诸如外部功率参考或外部扭矩参考之类的外部参考的变化率，计算前馈桨距角调整 到外部功率参考的变化率，并且将前馈桨距角调整发送到风力涡轮机，以根据外部参考调整功率输出来同时调整转子叶片的桨距角。