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Controller for a blade adjustment angle of at least one rotor blade of a wind power plant

一种调整角度、转子叶片的技术，应用在风力发动机的控制、风能发电、自动控制器等方向，能够解决控制器慢、电力和扭矩偏离不能被有效地修正等问题

Inactive Publication Date: 2009-09-02
NORDEX ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the ever-increasing requirements for the size of the expected rotor blade diameters of wind power plants, the previous pitch controller approach can no longer be used
Controllers are getting slower so that power and torque deviations cannot be effectively corrected in the case of large rotor blade diameters in future wind power plants

Method used

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  • Controller for a blade adjustment angle of at least one rotor blade of a wind power plant

Examples

Experimental program
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Embodiment Construction

[0014] The figure shows a schematic view of the structure of the pitch controller to which the actual value 10 of the generator speed is supplied. The target value 12 of the generator speed is subtracted from the actual value of the generator speed to form an error variable 14 . This error variable 14 is supplied to a controller 16 . The signal at the controller output 18 is transformed via a proportional amplifier 20 and a characteristic field 22 into an output variable 25 of the blade adjustment angle. Adjustment of the blade adjustment angle takes place on the basis of the converted output variable 25 .

[0015] The controller 16 has an integrating means 24 which amplifies the signal in an integral manner irrespective of the operating state of the wind power plant. In the second controller branch 26 the supplied signal is filtered by a proportional filter 28 . The proportional filter 28 includes a bandstop filter 30 and a differentiating component 32 . The band stop fil...

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Abstract

Controller for a blade adjustment angle for at least one rotor blade of a wind power plant, wherein a first controller branch is switched for the determination of the blade adjustment angle depending on the operating states of the wind power plant, wherein at least one differentiating member is provided in the switched first controller branch.

Description

technical field [0001] The invention relates to a controller for the blade adjustment angle of at least one rotor blade of a wind power plant. Background technique [0002] Wind power plants with controllers for adjusting the angle of the blades are known. A controller that adjusts the angle of the blades balances the power and torque fluctuations of the wind farm. The effectiveness of the load peak reduction with respect to reduction depends decisively on the reaction time of the controller, ie on the blade adjustment speed. Due to the inertia of the mass to be moved, and due to the need to avoid overloading of the actuating elements, the blade pitch controller cannot react to short-term fluctuations in the wind speed (see Windkraftanlagen [Wind Power Plants] by Erich Hau , Third Edition, Springer Press, Chapter 6.3). [0003] With the ever-increasing requirements for the size of the expected rotor blade diameters of wind power plants, the previous pitch controller metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06F03D7/02G05B11/00
CPCF03D7/024Y02E10/723F03D7/044F03D7/0224Y02E10/721F05B2270/706Y02E10/72
Inventor W·卡巴茨克
Owner NORDEX ENERGY
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