Control device and method for controlling wind turbine

A wind turbine and control device technology, applied in the control of wind turbines, wind turbines, engines, etc., can solve the problems of tearing and abrasion of pitch actuators and pitch bearings, and achieve the effect of stable load and stability

Pending Publication Date: 2022-04-29
SIEMENS GAMESA RENEWABLE ENERGY AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, changing the pitch angle in the pitch strategy may stress the system, causing tearing and wear on both the pitch actuator and the pitch bearing

Method used

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  • Control device and method for controlling wind turbine
  • Control device and method for controlling wind turbine
  • Control device and method for controlling wind turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The illustrations in the figures are schematic. It is to be noted that in different figures, similar or identical elements are provided with the same reference signs.

[0024] figure 1 An example of a wind turbine 1 is shown. The wind turbine 1 comprises a nacelle 3 and a tower 2 . The nacelle 3 is mounted at the top of the tower 2 . The nacelle 3 is mounted rotatably relative to the tower 2 by means of yaw bearings (not shown). The yaw bearing can belong to an active yaw system. The axis of rotation of the nacelle 3 relative to the tower 2 is called the yaw axis.

[0025] The wind turbine 1 also includes three rotor blades 6 ( figure 1 A rotor (hub) 4 with two rotor blades 6) is depicted in . These blades 6 are connected to the rotor 4 via joint sections (not shown). Each blade 6 of the wind turbine 1 comprises a pitch actuator (not shown) to vary the pitch angle of the blade 6 . The pitch angle generally refers to the rotation of the blade 6 about the longitu...

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PUM

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Abstract

A control device and method for controlling a wind turbine. There is described a control device configured to control a wind turbine (1) comprising a rotor (4) rotatable about an axis of rotation (8) wherein the rotor (4) has at least one blade (6) comprising: at least one additional component actuated by a corresponding adjustment actuator to vary an aerodynamic characteristic of the blade (6); and a pitch actuator to vary the pitch angle of the blades (6). The control device is configured to determine an idle mode or a self-sustaining mode of the wind turbine (1); the control unit is configured to control the pitch actuator to set a predetermined pitch angle of the blade (6) if the idle mode or the self-sustaining mode is determined; and causing a target rotational speed of the rotor (4) by variably controlling the adjustment actuators of the blades (6) if the idle mode or the self-sustaining mode is determined.

Description

technical field [0001] The invention relates to a control device and a method for controlling a wind turbine. Background technique [0002] Wind turbines are usually placed in idle mode (no rotor spinning) when they are not producing power to the grid, i.e. the rotor is spinning at a controlled rotational speed and power is produced to supply the turbine alone (self-sustaining turbine, SST) in the idling state. These modes are also known as off-grid modes. [0003] Ensuring stable and safe wind turbines in off-grid conditions and / or in the event of a failed turbine in general is becoming more and more important as offshore wind turbines will be installed The price of repairing ships, access to wind turbines is reduced and / or very expensive. This makes it important that individual wind turbines are able to maintain and maintain a stable and safe off-grid status. [0004] EP 2 146 095 A2 discloses a method of controlling a wind turbine, wherein the normal pitch strategy is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/04
CPCF03D7/0232F03D7/0276F03D7/0224F05B2270/101F05B2270/328F05B2270/304Y02E10/72F03D13/20
Inventor A·V·尼尔森
Owner SIEMENS GAMESA RENEWABLE ENERGY AS
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