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Multi-rotor wind turbine oscillation damping

A wind turbine, multi-rotor technology, applied in wind turbines, wind turbine control, wind turbines that are consistent with the wind direction, etc., can solve problems such as insufficient offset, and achieve the effect of reducing the oscillation mode and a simple way

Pending Publication Date: 2021-02-09
VESTAS WIND SYST AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, merely applying known oscillation damping methods may not be sufficient to counteract all such vibrations in multi-rotor turbines

Method used

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  • Multi-rotor wind turbine oscillation damping
  • Multi-rotor wind turbine oscillation damping
  • Multi-rotor wind turbine oscillation damping

Examples

Experimental program
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Embodiment Construction

[0030] figure 1 A multi-rotor wind turbine 100 in which the method according to the invention can be implemented is schematically shown. Currently the most common type of wind turbine is the horizontal axis wind turbine (HAWT). It usually has a nacelle placed on top of a tall vertical mast with the rotor blades attached to a horizontal low speed shaft protruding from the nacelle. The nacelle may include a gearbox for coupling the low speed shaft to the high speed shaft (which is also horizontal) which is connected to the generator. Electricity generated by the generator is transmitted via power lines through the core of the pole to the ground where it can be used immediately or stored, or coupled to a larger electrical grid. In the past, wind turbines and their rotor blades have become larger and larger to meet the growing demand for wind power generation, and recently another strategy has been introduced; the multi-rotor wind turbine 100 . Instead of one nacelle with one r...

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Abstract

A method of damping oscillations in a multi-rotor wind turbine and a wind turbine are provided. The wind turbine comprises a wind turbine support structure and at least a first nacelle with a first rotor and a second nacelle with a second rotor, at least one of the nacelles being located at a position away from a central longitudinal axis of the wind turbine support structure. The method comprisesthe steps of receiving and processing motion data, selecting a damping algorithm and generating a pitch control signal. The processing comprises determining at least one prominent oscillation mode ofthe wind turbine support structure and selecting a corresponding damping algorithm.

Description

technical field [0001] The invention relates to a method of damping oscillations in a multi-rotor wind turbine. The invention also relates to a multi-rotor wind turbine utilizing the method. Background technique [0002] A wind turbine known in the art comprises a wind turbine tower supporting a nacelle and a rotor having a plurality of pitch adjustable rotor blades. Over time, wind turbines have become larger and larger in an attempt to reduce the cost price per megawatt-hour (MWh) of electrical energy generated. [0003] As an alternative to large turbines, it is also possible to increase the power generation per wind turbine tower by equipping the wind turbine tower with multiple nacelles with smaller rotor blades. In such multi-rotor wind turbines, the nacelle is typically located at the distal end of one or more support arms extending from a central tower structure. In an alternative arrangement, the wind turbine may comprise a V-shaped support structure on a common ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/02F03D3/02F03D7/02F03D7/04
CPCF03D1/02F03D7/0296F03D7/0224F03D7/042Y02E10/72F05B2240/37F03D7/0264F05B2240/211F05B2260/70F05B2260/964F05B2270/327
Inventor J·X·V·内托S·达尔斯高A·伊德K·H·瑟恩森
Owner VESTAS WIND SYST AS