Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Vibration control method for wind turbine generator tower

A technology for wind turbines and towers, which is applied in the control of wind turbines, monitoring of wind turbines, and wind power generation, and can solve problems such as inaccurate measurement accuracy and poor control of tower vibrations

Inactive Publication Date: 2021-02-26
柳盼
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention overcomes the existing problems of inaccurate measurement accuracy and poor vibration control effect of the tower caused by only measuring the vibration acceleration in a single direction of the tower top cabin

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vibration control method for wind turbine generator tower
  • Vibration control method for wind turbine generator tower
  • Vibration control method for wind turbine generator tower

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0051] A method for controlling vibration of a wind turbine tower, wherein the unit of vibration acceleration is m / s 2 , the unit of velocity is m / s, which can be used to measure the vibration amplitude and other information of the position of the nacelle on the top of the tower. When the wind turbine is in a static state, its vibration acceleration and vibration velocity are approximately 0.

[0052] Vibration control method of the present invention specifically comprises the steps:

[0053] 1) Use several acceleration sensors installed at the connection position between the top of the tower and the nacelle to simultaneously measure the vibration acceleration in the axial direction and radial direction of the nacelle on the top of the wind turbine tower. In the circumferential direction of the outer peripheral surface of the tower; then clear the data...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a vibration control method for a wind turbine generator tower. The technical problems that the measurement precision is inaccurate and the vibration control effect of the tower is poor due to the fact that the vibration acceleration of a tower top cabin in a single direction is measured in the prior art are solved. According to the method, the acceleration or the speed inany direction in the horizontal plane of the tower top is subjected to vector summing, or the vibration acceleration in the radius direction of a spherical surface with the intersection point of the horizontal plane of the tower top and the central axis of the tower as the sphere center is measured and calculated, and a band-pass filter is used for carrying out first-order and second-order filtering on the combined acceleration or the combined speed, so that a variable pitch control vibration input value for controlling the variable pitch speed of blades based on the vibration acceleration ofthe tower top of a fan is obtained; and then the variable pitch control vibration input value and a variable pitch control vibration input value based on the rotating speed of a fan generator are subjected to vector addition, and finally, the variable pitch speed of the fan is controlled by utilizing the vibration input values in the two aspects, so that the effects of accurately measuring and reducing the first-order and / or second-order inherent frequency amplitude of the tower top cabin in the direction of the resultant force borne by the tower top cabin are achieved.

Description

technical field [0001] The invention relates to a method for controlling the vibration of a tower of a wind turbine, in particular to a method for controlling the vibration of a tower of a horizontal axis wind turbine. Background technique [0002] Wind power generation is a green, clean and environmentally friendly energy utilization method. By installing wind power generation devices in areas with strong natural winds on the sea and on land, the natural energy in the area can be fully utilized and converted into electrical energy, thereby creating huge economic benefit. [0003] However, as the diameter of the rotor of the current wind turbine is getting larger and the height of the tower is getting higher and higher, the probability of unit resonance is also increasing. The main reasons for resonance are turbulence, tower shadow, wind Changes in shear and wind turbine loads cause the tower and nacelle of the wind turbine to vibrate. On the other hand, in the pitch contro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/04F03D17/00G06F17/11
CPCF03D7/0224F03D7/0296F03D7/043F03D17/00G06F17/11Y02E10/72
Inventor 柳盼
Owner 柳盼
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com