Method of controling a wind turbine generator

A generator control and wind turbine technology, which is applied in the control of wind turbines, engine control, wind turbines, etc., can solve the problems of slow response of power reference signals, slow wind turbine generators, etc., and achieves less interference and simplified control structure. Effect

Active Publication Date: 2011-10-12
VESTAS WIND SYST AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, having a slow outer control loop will also make the wind turbine generator have a slow response to changes in the power reference signal

Method used

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  • Method of controling a wind turbine generator
  • Method of controling a wind turbine generator
  • Method of controling a wind turbine generator

Examples

Experimental program
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Embodiment Construction

[0040] figure 1 An example is a wind turbine 102 connected to the grid 106 via a converter 104.

[0041] The example wind turbine 102 is arranged to generate electricity according to wind and distribute the generated electricity to the grid 106. The wind turbine 102 includes a number of rotor blades 108 that are rotated by wind. The rotor blade 108 is connected to the shaft 110, and the shaft rotates due to the rotation of the rotor blade 108. The shaft 110 is in turn connected to a rotor of a generator (not shown), referred to herein as a generator shaft (not shown). Typically, the shaft 110 and the generator shaft are connected via a gear box (not shown) so that the rotation speed of the generator shaft becomes a multiple of the rotation speed of the shaft 110. The generator then converts the mechanical energy that rotates the generator shaft into electricity. The generator may be, for example, a single-fed or double-fed synchronous generator, a permanent magnet (PM) generat...

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PUM

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Abstract

A method for controlling a wind turbine generator is disclosed. The method comprises comparing an output power reference value and an actual output power value in a first control block with a first controller having a first control dynamics, comparing the output from the first control block with an actual generator shaft power value in a second control loop with a second controller having a second control dynamics, to determine a generator control signal, wherein the output power reference value is fed-forward and summed with the output of the first controller in the first control block. The disclosed method allows for fast reactions to changes in the output power reference value by the second controller regardless of the speed of the first controller.

Description

Technical field [0001] The present invention relates to the field of wind turbine generators, and in particular to the use of two controllers to control wind turbine generators. Background technique [0002] Recently, wind turbine generators have become an attractive way of generating electricity. To do this, wind power is captured by a set of blades (usually two or three) of the wind power plant. The wind captured by the blade rotates the shaft connected to the blade. The shaft is connected to the rotor of the generator, and the rotor therefore rotates at the same speed as the shaft, or in the case where the rotor is connected to the shaft via a gearbox, at a speed that is a multiple of the speed of the shaft. The generator then converts the mechanical energy provided by the wind into electricity that is sent to the grid. [0003] There are many control problems associated with wind turbine generators. For example, there is a need to control the output power of a wind power pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02P9/04
CPCF03D7/0272F03D7/028F03D7/043F05B2270/335F05B2270/706H02P9/008H02P2101/15Y02E10/72
Inventor K·B·拉森
Owner VESTAS WIND SYST AS
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