公开(公告)号：US11002248B2

公开(公告)日：2021-05-11

申请号：US16077685

申请日：2017-02-08

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Keld Hammerum ,  John Bengtson

IPC: F03D7/02 ,  F03D7/04

Abstract: The present invention relates to control of a wind turbine, and in particular it relates to a distributed control system including a blade controller for each blade of the wind turbine. The electrical connection between each blade controller and the power supply of the blade controller is arranged to be functionally isolated from the electrical connection of each other blade controller and the power supply of the respective blade controllers.

公开(公告)号：US10465659B2

公开(公告)日：2019-11-05

申请号：US15759150

申请日：2016-09-27

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Keld Hammerum ,  Martin Ansbjerg Kjær ,  Jesper Sandberg Thomsen ,  Eik Herbsleb ,  Tobias Gybel Hovgaard

IPC: F03D7/04 ,  G05B19/042 ,  G05B21/02 ,  G05B13/04

Abstract: The present disclosure relates to a control system for a wind turbine comprising more controllers and where at least some of the controllers operate at different sample frequencies. The control system comprises at least two controller units, a first controller (10) for determining an operational value (OV) of a sub-system and a second controller (20) for the sub-system. The second controller operates at a higher sample frequency than the first controller. It is disclosed that a faster reaction to a received demand value (V1), received for controlling the sub-system, can be obtained by setting the operational value (OV) of the sub-system as the sum of an internal operational value (V5) and a difference value (V4).

公开(公告)号：US10344740B2

公开(公告)日：2019-07-09

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: F03D3/04 ,  F03D7/04 ,  F03G7/00 ,  F03D17/00 ,  F03D7/02 ,  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.

公开(公告)号：US10337497B2

公开(公告)日：2019-07-02

申请号：US15504170

申请日：2015-08-14

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Keld Hammerum ,  Tobias Gybel Hovgaard ,  David Steele

IPC: F03D7/02 ,  F03D7/04

Abstract: The present invention relates to control of wind turbines based on predicted operational trajectories. A control system for a wind turbine is described where a main controller calculating one or more predicted operational trajectories and a safety controller validates at least one of the one or more predicted operational trajectories. The control system controls the wind turbine with the predicted control trajectory if the validation is valid, and controls the wind turbine with a safe-mode control trajectory if the validation is invalid. In an embodiment, the main controller is implemented as a receding horizon controller, e.g. in the form of a model predictive controller (MPC).

公开(公告)号：US09709033B2

公开(公告)日：2017-07-18

申请号：US14395849

申请日：2013-04-22

Applicant: Vestas Wind Systems A/S

Inventor： Keld Hammerum ,  Thomas Krüger

IPC: F03D7/02

CPC classification number: F03D7/0224 ,  F03D7/0264 ,  Y02E10/723

Abstract: A method for controlling an individually pitched wind turbine during shutdown is disclosed, the wind turbine comprising at least three wind turbine blades (1a, 1b, 1c). In response to a shutdown command for stopping operation of the wind turbine, a blade parameter of each of the wind turbine blades (1a, 1b, 1c), e.g. pitch angle, bending moment or blade acceleration, is determined. The blade parameters of the wind turbine blades (1a, 1b, 1c) are compared, and a shutdown strategy for the wind turbine is selected from a group of two or more predefined shutdown strategies, based on the comparing step. Finally, the wind turbine blades (1a, 1b, 1c) are moved towards a feathered position in accordance with the selected shutdown strategy.

公开(公告)号：US20140334927A1

公开(公告)日：2014-11-13

申请号：US14359172

申请日：2012-11-21

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Keld Hammerum

IPC: F03D7/02 ,  F03D7/04

CPC classification number: F03D7/0264 ,  F03D7/0224 ,  F03D7/042 ,  F03D7/045 ,  F05B2270/327 ,  F05B2270/328 ,  F05B2270/331 ,  F05B2270/332 ,  F05B2270/334 ,  Y02E10/723

Abstract: The invention provides a shutdown controller for a wind turbine. To improve the estimation of a state of the wind turbine, the controller comprises at least two sensors being adapted to provide sensor data significant for different mechanical states in the wind turbine. The controller can provide an estimated state of the wind turbine based on the sensor data from the at least two sensors and compare the state of the wind turbine with a predefined detection limit to provide a shutdown signal if the estimated state is outside the detection limit.

Abstract translation: 本发明提供了一种用于风力涡轮机的关闭控制器。 为了改进对风力涡轮机的状态的估计，控制器包括至少两个传感器，其适于提供对于风力涡轮机中的不同机械状态有重要意义的传感器数据。 控制器可以基于来自至少两个传感器的传感器数据提供风力涡轮机的估计状态，并且将风力涡轮机的状态与预定义的检测限制进行比较，以在估计状态超出检测限度时提供关闭信号。