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

A method for damping tower vibrations in a wind turbine installation

A technology for wind turbines and towers, applied in the control of wind turbines, the configuration of installing/supporting wind turbines, wind turbines, etc., can solve problems such as high cost and unfavorable installation of wind turbines

Active Publication Date: 2008-11-05
国家石油海德鲁股份公司
View PDF0 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Current technology for wind turbines located offshore is largely limited to permanently installed towers at low depths, below about 30 m
[0003] Permanent installations at depths exceeding 30m often lead to technical problems and high costs
This means that sea depths above 30m or so have been considered technically and commercially unfavorable for the installation of wind turbines until now.

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
  • A method for damping tower vibrations in a wind turbine installation
  • A method for damping tower vibrations in a wind turbine installation
  • A method for damping tower vibrations in a wind turbine installation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] As the wind acts on the wind turbine arrangement, the force from the wind will facilitate movement within the base. However the force from the wind turbine depends on how the wind turbine is controlled, ie how the RPM and pitch of the turbine blades vary with the wind speed. The control algorithm will vary with wind speed. A typical control rationale for a stationary wind turbine is in figure 1 Indicated. By referring to the accompanying drawing, it can be seen that:

[0021] In the starting range, small forces act on the wind turbine. The wind force has little effect on the movement. If the movement is affected by the wind force, it is possible to control the turbine roughly as in a varying RPM range.

[0022] Over the varying RPM range, there is an approximately constant pitch angle for the turbine blade. The purpose is to control the RPM of the turbine so that the maximum power can be produced at any time under the momentary relative wind speed experienced agai...

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 provides a method in connection with a wind turbine installation for damping tower vibrations, in particular, a floating wind turbine installation comprises: a floating cell; a tower arranged over the floating cell; a generator mounted on the tower that is rotatable in relation to the wind direction and fitted with a wind turbine; and an anchor line arrangement connected to anchors or foundations on the sea bed. The tower's eigenvibrations FORMULA eig are damped by, in addition to control with the controller in the constant power or RPM range of the wind turbine, an increment, FORMULA, added to the blade angle of the turbine blades on the basis of the tower velocities, FORMULA Z , so that the eigenvibrations are counteracted. The vibrations in FORMULA that have frequency FORMULA eig can expediently be damped by means of a stabilizer with the transfer function Hstab(s) between, such that the loop transfer function FORMULA is obtained, which means that: (I) ''b'' is a variable depending on the moment and thrust characteristics of the turbine blades.

Description

technical field [0001] The method relates to a method for attenuating tower vibrations in a wind turbine installation, in particular a floating wind turbine installation. The wind turbine installation includes: a floating unit; a tower disposed on the floating unit; a generator located on the tower, the tower is rotatable with respect to the wind direction and the wind turbine is mounted; and an anchor connected to the seabed Or the anchor cable device of the base. Background technique [0002] The development of floating anchored wind turbines that can be used at greater depths can strongly enhance access to the expansive region of offshore wind energy. Current technology for wind turbines located offshore is largely limited to permanently installed towers at low depths, below approximately 30 m. [0003] Permanent installations at depths of more than 30m often lead to technical problems and high costs. This means that sea depths of more than about 30 m have so far been ...

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): F03D7/04F03D11/00F03DF03D7/02
CPCF03D7/024Y02E10/723F03D7/0296F05B2260/96F05B2240/93F03D9/003F03D7/044F03D7/0224F03D13/25F03D9/255B63B39/00Y02E10/727F03D9/25Y02E10/72
Inventor F·G·尼尔森B·斯科雷J·O·G·坦德I·诺尔海姆K·乌伦
Owner 国家石油海德鲁股份公司
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