Fan tower tube vibration control eddy current tuning mass damper

Abstract

The invention provides a fan tower tube vibration control eddy current tuning mass damper. The mass damper is arranged inside a fan tower tube (1) and comprises a sleeve (2), a base plate (7) arrangedat the bottom of the sleeve (2) and a copper plate (6) and a permanent magnet (4) which are arranged inside the sleeve (2). The permanent magnet (4) is suspended at the top of the sleeve (2). The copper plate (6) is fixed to the base plate (7) and can perform vibration reduction on a fan tower tube, and the damping effect is good. The magnitude of magnetic damping can be flexibly adjusted, and the large adjusting range is obtained. The damper is arranged inside the fan tower tube (1), a connecting plate (8) is fixed to the inner wall of the fan tower tube (1) in a welded mode, and the weatherresistance is good. The rigidity of the damper is changed by changing the diameter and length of a suspender (3), the rigidity of the damper is adjustable flexibly, no mechanical friction problem orsealing problem exists, and the reliability and durability are good.

Description

technical field [0001] The invention relates to the technical field of new energy equipment, in particular to an eddy current tuned mass damper for controlling the vibration of a wind turbine tower. Background technique [0002] Wind turbines are usually called wind turbines. When generating electricity, the output frequency of the wind turbines must be kept constant. This is very necessary for both wind turbine grid-connected power generation and wind-solar hybrid power generation. To ensure the constant frequency of wind power, one way is to ensure the constant speed of the generator, that is, the operation mode of constant speed and constant frequency. Because the generator is driven by the wind turbine through the transmission device, this method undoubtedly requires constant wind turbine speed. Speed, this method will affect the conversion efficiency of wind energy; another way is that the generator speed changes with the wind speed, and the frequency of the output ele...

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Problems solved by technology

[0004] In order to overcome the disadvantages of poor vibration damping effect in the above-mentioned prior art, the present invention provides an electric eddy current tuned mass damper for controlling the vibration of the wind turbine tower. The mass damper is placed inside the wind turbine tower (1), which includes a sleeve (2 ), the base plate (7) placed at the bottom of the sleeve (2) and the permanent magnet (4) and copper plate (6) placed inside the sleeve (2), the permanent magnet (4) is suspended from the sleeve ( 2) At the top, the copper plate (6) is fixed on the bottom plate (7), which can reduce the vibration of the fan tower, and the vibration reduction effect is good

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