Wind turbine yawing system

A technology of yaw system and wind turbine, which is applied in the field of monitoring and determining the deviation from the expected operation, and can solve problems such as deviation of the yaw system

Inactive Publication Date: 2010-12-15
VESTAS WIND SYST AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, relatively small deviations, such as in the yaw gear, may further cause other significant deviations in the yaw system

Method used

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  • Wind turbine yawing system
  • Wind turbine yawing system
  • Wind turbine yawing system

Examples

Experimental program
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Effect test

Embodiment Construction

[0035] figure 1 A wind turbine 102 is shown having a nacelle 104 and a hub 106 having blades rotatably mounted to the nacelle 104 via a main shaft. Nacelle 104 is rotatably mounted to wind turbine tower 108 . The nacelle as well as the hub are rotatable by a certain rotational angle 114 about the main axis 112 of the wind turbine tower 108 . Rotation of the nacelle and hub about the main axis 112 is referred to as "yawing the nacelle 104". To provide yaw of the nacelle, the nacelle includes a wind turbine yaw system 116 (not shown) incorporated in the connection mechanism between the nacelle 104 and the tower 108 . exist figure 2 with image 3 The yaw system is shown and described in more detail in .

[0036] figure 2 A yaw system 116 and a signal processor 202 are shown, the yaw system comprising a plurality of yaw motors 208 arranged to provide a drive action for a yaw gear 206 connected to the yaw motors 208 Turn the nacelle.

[0037] Each yaw motor is arranged to...

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PUM

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Abstract

In order to prevent minor deviations from expected operation in a yawing system before they lead to larger deviations, there is in accordance with a method aspect of the invention disclosed monitoring and determining deviation from an expected operation in a yawing system of a wind turbine. The method includes inputting a rotation angle input to at least one of a plurality of yaw motors, sensing an angular output of at least one of the plurality of yaw motors, receiving the rotation angle input to the at least one of the plurality of yaw motors in a signal processor, receiving the angular output of the at least one of the plurality of yaw motors, comparing at least two of the received signals, and / or comparing a mathematical relation of two of the received signals with a reference, and hereby determining whether there is any deviation from the expected operation.

Description

technical field [0001] The present invention relates to a wind turbine yaw system and a method of monitoring and determining deviations from desired operation in a wind turbine yaw system. Background technique [0002] In wind turbines, yaw systems steer the nacelle of the wind turbine by a preferred angle relative to the wind turbine tower, especially in order to increase the dynamic efficiency of the wind turbine or to dampen vibrations. The yaw system that turns the nacelle is typically driven by a plurality of yaw motors, which may be hydraulic or electric, through one or more yaw gears and appropriate bearings. [0003] The position acquired by the nacelle can be held and locked by the brake until the next yaw. Failure modes such as skid or rupture damage or unrecognized or false alarms may be encountered in yaw systems, which may cause production downtime or unscheduled maintenance. [0004] The yaw gear of the wind turbine may have a configuration ratio of eg 1 to 1...

Claims

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Application Information

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IPC IPC(8): F03D7/02
CPCY02E10/723F05B2260/80Y02E10/722F05B2270/329F05B2240/40F03D11/0091F03D7/0204F03D17/00Y02E10/72
Inventor 李晓谦S·那拉希马卢I·H·桑德瓦德
Owner VESTAS WIND SYST AS
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