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Improved electro-thermal heating

A technology of electric heating and heating area, which is applied in the direction of wind power generation, wind engine monitoring, engine control parameters, etc. It can solve problems such as faults, wind turbine blades reduce the rotation speed of wind turbines, and reduce the performance of wind turbines.

Active Publication Date: 2018-08-31
VESTAS WIND SYST AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ice accumulation on blade surfaces can lead to undesired consequences
For example, changes in the curve of a wind turbine blade due to ice buildup can reduce the rotational speed of the wind turbine
As a result, the wind turbine may operate at less than optimal speed and efficiency, which reduces the performance of the wind turbine
Also, the added weight of accumulated ice on wind turbine blades can lead to fatigue and stress failure of the blades

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0039] figure 1 A schematic diagram of a typical wind turbine 10 comprising an embodiment of a wind turbine blade 20 according to the invention is shown. Wind turbine 10 is mounted on a foundation 12, which may be an onshore foundation or an offshore platform or foundation. The wind turbine includes a tower 14 having a plurality of tower sections. Nacelle 16 is positioned and attached to the top of tower 14 . The wind turbine rotor connected to the nacelle 16 includes a hub 18 and at least one wind turbine blade 20, wherein, at figure 1 Three wind turbine blades are shown in , but there may be any number of wind turbine blades 20 depending on the design and implementation of wind turbine 10 . The wind turbine blades 20 are connected to the hub 18 which in turn is connected to the nacelle 16 by a low speed shaft extending out of the front of the nacelle 16 .

[0040] figure 2 A schematic diagram of an electrothermal heating (ETH) element 201 that may be embedded within a ...

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PUM

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Abstract

The present invention relates to a method and controller for heating a wind turbine blade that comprises a plurality of heating zones. An icing factor is determined based on environmental conditions and one or more heating zones are determined based on the determined icing factor, wherein each heating zone comprises one or more Electro-Thermal Heating Elements. The one or more Electro-Thermal Heating Elements corresponding to the determined heating zones are activated to generate heat.

Description

technical field [0001] The present invention relates to electrothermal heating (ETH), and in particular to improved control of ETH for wind turbine blades. Background technique [0002] Wind turbines generate electricity from wind energy and can be located on land or offshore. Wind turbines located in cold climates may be subject to icing events in which ice may form on the surface of the wind turbine blades due to cold water on the cold surface. Ice accumulation on the blade surface can lead to undesired consequences. For example, changes in the curve of a wind turbine blade due to ice buildup may reduce the rotational speed of the wind turbine. As a result, the wind turbine may operate at less than optimal speed and efficiency, which reduces the performance of the wind turbine. Furthermore, the added weight of accumulated ice on wind turbine blades may lead to fatigue and stress failure of the blades. [0003] Therefore, there is a need to be able to prevent or reduce ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D80/40F03D17/00
CPCF05B2270/309F05B2270/323F05B2270/325F03D17/00F03D80/40F05B2270/32Y02E10/72
Inventor S·巴格L·斯潘德利P·巴杰
Owner VESTAS WIND SYST AS