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Torque control of wind turbine generators under fault conditions

A wind turbine and wind turbine technology, applied in the field of computer program products and wind turbines, can solve problems such as unfavorable structures of wind turbines

Inactive Publication Date: 2017-08-04
XEMC DARWIND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in areas where grid failures are frequent, the effect of frequent torque off is the mechanical impact that can ultimately be detrimental to the wind turbine structure

Method used

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  • Torque control of wind turbine generators under fault conditions
  • Torque control of wind turbine generators under fault conditions
  • Torque control of wind turbine generators under fault conditions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] figure 1 A wind turbine 100 according to one embodiment of the invention is described. The wind turbine may include a generator 102 , such as a permanent magnet (PM) generator or a synchronous or asynchronous type generator, that converts the rotational energy of the blades into variable AC electrical power.

[0026] The output of the generator is fed to a converter 104 controlled by a converter controller 106, where the converter may include an active generator-side inverter 108 for converting alternating current generated by the generator to direct current. The active generator-side inverter may be connected via a DC bus to an active grid-side inverter 109 for converting the direct current into alternating current having the frequency used by the utility grid 110 . The output of the converter may be connected to the grid via one or more transformers 112 and one or more switches 114 , 116 .

[0027] The wind turbine further includes a low power auxiliary power distri...

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PUM

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Abstract

Methods and controllers are described for controlling torque of a wind turbine configured to deliver electrical power to a utility grid via a converter. The method comprises the steps of: receiving a fault signal; and, in response to said fault signal, converting the torque of said turbine to A controllable reduction from the nominal torque value to a predetermined low torque value.

Description

technical field [0001] The present invention relates to torque control of a wind turbine generator, and in particular, but not exclusively, to a method of controlling torque of a wind turbine generator, a torque controller of a wind turbine generator, a wind turbine comprising such a torque controller And a computer program product using the method. Background technique [0002] Wind turbine technology is a rapidly developing field of technology. However, the installation and operation of a wind farm and the connection of the wind farm to the public grid present several technical challenges. Wind turbines may be installed in areas where the grid is not very stable, so that the control system of the wind park and / or the control systems in the individual wind turbines of the wind park should be able to take measures in the event of so-called grid faults or failures during operation. Here, a fault may be defined as a facility disturbance that causes a significant drop in volt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P29/04H02P9/10F03D7/02
CPCF03D7/0272H02P29/04H02P9/102F03D7/0264F03D7/0288Y02E10/72H02P9/04
Inventor M·E·C·达蒙
Owner XEMC DARWIND