公开(公告)号：US20210140410A1

公开(公告)日：2021-05-13

申请号：US16623159

申请日：2018-06-14

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Jacob Deleuran GRUNNET ,  Claus THYBO ,  Johnny NIELSEN

IPC: F03D80/40 ,  F03D17/00

Abstract: According to an embodiment of the present invention there is provided an apparatus for monitoring an ambient environment of a wind turbine. The apparatus comprises a cooling system comprising first and second heat exchangers, and a fluid circuit arranged to enable coolant to flow between the first and second heat exchangers. The apparatus further comprises a processor configured to: monitor one or more operational parameters of the cooling system; measure an efficiency of the cooling system based on the monitored one or more operational parameters; and calculate a liquid water content of the ambient environment based on the measured efficiency of the cooling system.

公开(公告)号：US20200300221A1

公开(公告)日：2020-09-24

申请号：US16088415

申请日：2017-03-30

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Johnny NIELSEN

IPC: F03D7/04 ,  F03D7/02

Abstract: Controlling a wind turbine comprising a wind sensor, a number of pitch-adjustable rotor blades, a yawing system, and a control system for yawing the wind turbine rotor relative to the wind and for changing the pitch of the rotor blades. A wind parameter is measured by the wind sensor, and is indicative of the wind speed and/or the wind direction relative to the wind turbine. At least a first and a second set of wind correction parameters for different production modes of the wind turbine are obtained. The production mode of the wind turbine is then determined, which may be one of at least normal operation or non-production, and the measured wind parameter is then adjusted as a function of the set of wind correction parameters corresponding to the production mode at the time of adjusting. Hereby a more precise wind parameter is obtained which can be used in the controlling of the turbine.

公开(公告)号：US20190353144A1

公开(公告)日：2019-11-21

申请号：US16312924

申请日：2017-06-29

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Johnny NIELSEN

IPC: F03D7/02 ,  F03D7/04 ,  F03D17/00

Abstract: A wind turbine includes at least one wind speed sensor, a number of pitch-adjustable rotor blades, and a control system for changing the pitch of the rotor blades and/or a generator torque. The the control system determines at time intervals an error parameter as the difference between an estimated wind speed and a measured wind speed as measured by the wind speed sensor. Then, based on a number of pre-defined wind speed intervals, a group of error parameters is obtained over time for each wind speed interval. For each wind speed interval and for each group of error parameters a wind speed offset is determined based on the average of the error parameters within the group which wind speed offsets are used in adjusting the measured wind speed.

公开(公告)号：US20190048848A1

公开(公告)日：2019-02-14

申请号：US16076648

申请日：2017-02-10

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Lars GLAVIND ,  Ib Svend OLESEN ,  Morten THØGERSEN ,  Kristian KIIB ,  Johnny NIELSEN

IPC: F03D7/02

Abstract: A yaw sensor for a wind turbine comprises a plurality of rotary switches, each configured to be coupled to a yaw drive gearbox of a wind turbine nacelle, the rotary switches each being operable to activate and deactivate respective associated electrical contacts in dependence on an amount of yaw rotation of the nacelle relative to a start position.Each electrical contact is active at a plurality of first yaw rotation ranges with respect to the start position, and inactive at a plurality of second yaw rotation ranges with respect to the start position, the first and second yaw rotation ranges being interleaved.

公开(公告)号：US20180355846A1

公开(公告)日：2018-12-13

申请号：US16060120

申请日：2016-12-22

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Johnny NIELSEN

IPC: F03D7/02 ,  F03D17/00

CPC classification number: F03D7/0204 ,  F03D7/0224 ,  F03D17/00 ,  F05B2200/30 ,  F05B2270/32 ,  F05B2270/321 ,  F05B2270/802 ,  Y02E10/723

Abstract: Method of controlling a wind turbine. A data set is obtained that includes a direction of the wind relative to the wind turbine and a pitch angle parameter representing a pitch angle of at least one of the wind turbine blades. Based on the obtained data sets, a statistical representation of the pitch angle parameter as a function of the relative wind direction is determined, which is then used in estimating a wind direction offset corresponding to the relative wind direction where the pitch angle parameter attains a maximum. The relative wind direction of the wind turbine is then adjusted as a function of the wind direction offset.

公开(公告)号：US20180171985A1

公开(公告)日：2018-06-21

申请号：US15844273

申请日：2017-12-15

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Jacob Deleuran GRUNNET ,  Johnny NIELSEN ,  Jes RASMUSSEN ,  Claus THYBO

IPC: F03D17/00 ,  F03D1/06 ,  G01S17/89

CPC classification number: F03D17/00 ,  F03D1/0675 ,  F03D7/045 ,  F05B2240/221 ,  F05B2240/912 ,  F05B2270/804 ,  F05B2270/8042 ,  G01S17/89 ,  Y02E10/721 ,  Y02E10/726 ,  Y02E10/728

Abstract: The present disclosure relates to a system for determining at least one blade state parameter of a wind turbine blade, wherein the system is configured to: obtain blade data relating to the wind turbine blade from a sensor system associated with the wind turbine blade; compare at least one reference model of at least a portion of the wind turbine blade with the blade data; identify a reference model in dependence on the comparison; and determine at least one blade state parameter in dependence on the identified reference model. The blade data may take the form of an image, for example a 3-dimensional measurement such as a point cloud representing at least a portion of the blade.

公开(公告)号：US20170009739A1

公开(公告)日：2017-01-12

申请号：US15269839

申请日：2016-09-19

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Fabio CAPONETTI ,  Per BRATH ,  Keld HAMMERUM ,  Johnny NIELSEN

IPC: F03D7/04 ,  F03D17/00 ,  F03D7/02 ,  G05B15/02

CPC classification number: F03D7/042 ,  F03D7/0224 ,  F03D17/00 ,  F03G7/00 ,  G05B15/02

Abstract: 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.

Abstract translation: 提供一种检测传感器故障模式的方法。 传感器可以是例如弯矩传感器并且可以感测风力涡轮发电机（WTG）上的叶片的弯矩。 该方法包括将由第一传感器输出的数据与由第一传感器预期输出的参考数据进行比较以产生第一比较结果，并将由第一传感器输出的数据与由第二传感器输出的数据进行比较以产生第二比较 结果。 至少部分地基于第一和第二比较结果确定第一传感器是否已经进入故障模式。