公开(公告)号：US20200032770A1

公开(公告)日：2020-01-30

申请号：US16337842

申请日：2017-09-27

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Johnny NIELSEN

IPC: F03D7/02 ,  G01P13/02

Abstract: The invention relates to a method of controlling a wind turbine comprising a wind direction sensor, a yawing system, and a control system for yawing the wind turbine rotor relative to the wind. The method comprises obtaining an estimate for a wind power parameter as a function of a relative wind direction, where the wind power parameter is determined as one of a power, a torque, a blade load, or a blade pitch angle of the wind turbine. At time intervals, a data set is established comprising a wind power parameter and a wind direction parameter as measured by the wind direction sensor. Over time a group of data sets is then obtained for a number of pre-defined wind direction intervals, and a wind direction offset is determined for each interval by comparing the average wind power parameter for that interval with the estimate of the wind power parameter. The wind direction offsets of the different wind direction intervals are used to adjust the wind direction parameter, and applied in the controlling of the wind turbine. The invention further relates to a control system for a wind turbine for performing a control method as mentioned above.

公开(公告)号：US20220154693A1

公开(公告)日：2022-05-19

申请号：US17529073

申请日：2021-11-17

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Goncalo Lucas MARCOS ,  Lars GLAVIND ,  Johnny NIELSEN

IPC: F03D7/04 ,  F03D7/02 ,  G01P13/02

Abstract: Systems and methods for estimating a direction of wind incident on a wind turbine, the wind turbine comprising a tower; a rotor-nacelle-assembly (RNA) carried by the tower; a deflection sensor configured to sense a position of the RNA or a deflection of the tower; and a wind direction sensor. One approach includes: obtaining deflection training data from the deflection sensor; obtaining wind direction training data from the wind direction sensor; training a machine learning model on the basis of the deflection training data and the wind direction training data in order to obtain a trained machine learning model; obtaining further deflection data from the deflection sensor; inputting the further deflection data into the trained machine learning model; and operating the machine learning model to output a wind direction estimate on the basis of the further deflection data.

公开(公告)号：US20200347827A1

公开(公告)日：2020-11-05

申请号：US16957096

申请日：2018-12-11

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Johnny NIELSEN ,  Jacob Deleuran GRUNNET

IPC: F03D80/40

Abstract: Embodiments herein describe a method and associated controller for a wind turbine. The method comprises determining one or more characteristics of a sensor signal received from a mechanical sensor of the wind turbine; determining, based on the one or more characteristics of the sensor signal, an icing condition of the wind turbine; and controlling operation of one or more wind turbine systems based on the determined icing condition.

公开(公告)号：US20190153999A1

公开(公告)日：2019-05-23

申请号：US16091484

申请日：2017-04-06

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Johnny NIELSEN ,  Brian Lembcke Melgaard

IPC: F03D7/02

Abstract: A control system for yawing a wind turbine rotor relative to the wind and for changing the pitch of rotor blades. A wind direction parameter is measured by a wind direction sensor. The wind direction is calibrated as a function of a predetermined offset parameter, and then adjusted as a function of a wind direction compensation parameter. The adjusted relative wind direction is then used in the determining of a control parameter of the wind turbine. The parameters for the calibration and adjustment of the relative wind direction are obtained from a set of data comprising the wind direction relative to the wind turbine over time and as measured by the wind direction sensor on the wind turbine and as measured by a second wind direction sensor.

公开(公告)号：US20240376865A1

公开(公告)日：2024-11-14

申请号：US18681767

申请日：2022-08-04

Applicant: Vestas Wind Systems A/S

Inventor： Ines PINTO FRUTUOSO ,  Goncalo Lucas MARCOS ,  Goncalo Artur Duarte PEREIRA ,  Johnny NIELSEN

IPC: F03D17/00

Abstract: A method of calibrating a reference of a wind turbine. The method comprises monitoring performance of the wind turbine over a calibration period to generate performance data, wherein the calibration period comprises a series of sub-periods. The reference is calibrated by: setting the reference on the basis of the performance data; and, for each sub-period: determining a sub-period value on the basis of the performance data generated during that sub-period, comparing the sub-period value with the reference, and updating the reference with the sub-period value if the comparison shows that a performance of the wind turbine indicated by the sub-period value is better than a performance of the wind turbine indicated by the reference. The comparison and updating steps enable the reference to more accurately reflect more recent performance of the wind turbine. The method can also be reliably used in freezing temperatures.

公开(公告)号：US20240240613A1

公开(公告)日：2024-07-18

申请号：US18557872

申请日：2022-04-26

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Kristian KIIB ,  Johnny NIELSEN

IPC: F03D7/04

CPC classification number: F03D7/042 ,  F05B2260/821 ,  F05B2270/327

Abstract: The invention relates to determining rotor speed of a wind turbine. The invention involves receiving angular velocity sensor data indicative of an angular velocity of the wind turbine rotor hub, provided e.g by a gyroscope and receiving acceleration sensor data indicative of an acceleration of the rotor hub in at least one radial direction relative to an axis of rotation of the rotor hub. The invention involves determining first and second estimated rotational speeds of the rotor hub based on the respective angular velocity sensor data and acceleration sensor data. The invention involves determining a correction value based on a difference between the first and second estimated rotational speeds, and applying the correction value to the first estimated rotational speed to determine the true current rotor speed of the wind turbine.

公开(公告)号：US20240077058A1

公开(公告)日：2024-03-07

申请号：US17766983

申请日：2020-10-09

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Carlo Alberto RATTI ,  Johnny NIELSEN ,  Jens VAN SCHELVE

IPC: F03D7/02 ,  F03D7/04

CPC classification number: F03D7/026 ,  F03D7/046 ,  F05B2270/3202

Abstract: A method of transitioning a wind turbine from a sleep state is provided in which a wind speed at the wind turbine is measured, and the measured wind speed is compared to a wake-up threshold. If the wind speed exceeds the wake-up threshold, the wind turbine is transitioned to an active state. Before comparing, either the measured wind speed or the wake-up threshold is adjusted based on an outcome of at least one previous transition from the sleep state of the wind turbine.

公开(公告)号：US20230407839A1

公开(公告)日：2023-12-21

申请号：US18250354

申请日：2021-10-14

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Johnny NIELSEN

IPC: F03D7/02 ,  F03D7/04 ,  F03D9/25

CPC classification number: F03D7/0204 ,  F03D7/046 ,  F03D9/25 ,  F05B2270/329 ,  F05B2270/321 ,  F05B2270/335 ,  F05B2270/504 ,  F05B2240/37

Abstract: There is provided methods and systems for controlling a multi-rotor wind turbine generator having at least two rotor nacelle assemblies mounted to a support arrangement by a common yaw control system and each having a wind direction sensor mounted thereto configured to measure a wind direction relative to forward direction of its rotor nacelle assembly. The methods comprise the steps of measuring, for each rotor nacelle assembly, wind power parameter data over a plurality of relative wind directions, determining, based on the measured data, an optimum relative wind direction, either based on the average of two directions at which the parameter is maximum or on a combined data set, and controlling the yaw system accordingly.

公开(公告)号：US20210262437A1

公开(公告)日：2021-08-26

申请号：US17254818

申请日：2019-06-20

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Pradeep BOSUKONDA ,  Tobias Østergaard ROSSEL ,  Johnny NIELSEN

IPC: F03D7/02 ,  F03D17/00 ,  G01S17/58 ,  G01S17/95 ,  G01S7/481

Abstract: A method of controlling a wind turbine having one or more blades comprising a LIDAR system is also provided, the method comprising determining a wind parameter based on LIDAR measurements, determining a control parameter of the wind turbine based on the wind parameter, and controlling the wind turbine in accordance with the wind parameter.

公开(公告)号：US20210190041A1

公开(公告)日：2021-06-24

申请号：US17132942

申请日：2020-12-23

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Goncalo Artur DUARTE PEREIRA ,  Ines PINTO FRUTUOSO ,  Johnny NIELSEN ,  Jens VAN SCHELVE

IPC: F03D7/04 ,  F03D7/02

Abstract: The present invention relates to a method of operating a wind turbine with an operational parameter where values of the operational parameter are obtained by different sensors and compared to determine the validity of the value. A first value and a second value of the operational parameter are obtained different sensors and validated by comparing the two values. The wind turbine being operated using a validated value as the operational parameter. The two sensors are selected among a trained machine learning model, a reference sensor and a computerized physical model.