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Windmill tower damping system based on electrorheological effect

A vibration reduction system and electrorheological technology are applied in wind turbines, wind turbine control, wind turbine monitoring and other directions, which can solve problems such as low technical difficulty, achieve low energy consumption, facilitate application and development, and avoid resonance effects.

Pending Publication Date: 2020-10-30
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can overcome the vibration problem when the traditional wind turbine tower is working, and it is easy to implement, with low technical difficulty and a novel method

Method used

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  • Windmill tower damping system based on electrorheological effect
  • Windmill tower damping system based on electrorheological effect
  • Windmill tower damping system based on electrorheological effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In this example, see Figure 1 to Figure 9 , a wind turbine tower vibration damping system based on the electrorheological effect, including a vibration sensor 6, an electrorheological fluid pouring pipe 7 and an electrical control system; 2 to 3 of the vibration sensors 6 are distributed along the vertical direction and pasted on the wind force The upper outer surface of the machine tower; the electrorheological fluid pouring pipe 7 is fixed on the upper wall of the wind turbine tower in a fence shape; the electrical control system is fixedly installed in the wind turbine tower through an electrical board 11; The vibration sensor 6 is electrically connected to the electrorheological fluid pouring pipe 7 through the electrical control system; when the vibration sensor 6 transmits a signal indicating that the vibration is too large, the electrical control system controls the electrorheological fluid pouring pipe 7 to turn on the power, so that the electrorheological fluid...

Embodiment 2

[0036] This embodiment is basically the same as Embodiment 1, and the special features are as follows:

[0037] In this embodiment, the electrical control system includes an A / D conversion module, a programmable logic controller PLC, a D / A conversion module, a relay and its corresponding switch, a large-capacity lithium battery, and is also equipped with a relay The corresponding switch connects the electrodes of the electrorheological fluid pouring tube 7 .

Embodiment 3

[0039] In this embodiment, a wind turbine tower vibration damping system based on the electrorheological effect includes a vibration sensor 6, an A / D conversion module, a programmable logic controller PLC, a D / A conversion module, a current transmission device, a large-capacity Lithium battery, electrorheological fluid pouring tube 7, connecting steel plate 8, pressing steel ring 13, pressing connecting plate 14, and glue-free nails 15.

[0040] Such asfigure 1 As shown, the main components of the wind generator include the wind turbine blade 1, the wind deflector 2, the nacelle 3, and the tower 4, and the present invention is installed at the arrangement position 5 of the device.

[0041] Such as figure 2 As shown, the vibration sensors 6 are distributed on the surface of the tower in a straight line, and there are three in total. Figure 4 The flow chart of the working process can clearly see that the vibration sensor is connected to the A / D module through the data line, a...

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Abstract

The invention discloses a windmill tower damping system based on an electrorheological effect, consisting of a vibration sensor, an A / D conversion module, a programmable controller PLC, a D / A conversion module, a current transmission apparatus, a high-capacity lithium battery, an electrorheological fluid casting pipe, and a connecting steel plate. The electrorheological fluid casting pipe fixedlyburied in the tower wall is filled with polar molecule electrorheological fluid; and when receiving a damping signal, the electrorheological effect of this material is used for electrifying the electrorheological fluid to improve the rigidity of blades and damp the blades. The system of the invention can overcome the vibration problem during working of a traditional windmill tower, and is easy toimplement, lower in technical difficulty and novel in mode.

Description

technical field [0001] The invention relates to a wind turbine tower vibration damping system based on the electrorheological effect, especially a vibration damping system that changes the stiffness by laying an electrorheological fluid pouring pipe containing electrorheological fluid in the tower wall, which is applied in Wind turbine tower vibration protection field. Background technique [0002] In the context of global energy crisis and environmental pollution, it is an urgent problem to find new energy sources that can replace traditional fossil energy sources as soon as possible. As a clean and renewable energy, wind energy has become an important direction for the development of new energy around the world. The development of wind power technology is of great significance for adjusting the energy structure, reducing environmental pollution, and solving the world energy crisis. In new energy conversion and capture machinery, there are a series of problems to be solve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/02F03D17/00F03D13/20E04B1/98
CPCF03D7/0296F03D17/00F03D13/20E04B1/98F05B2270/334Y02E10/72Y02E10/728
Inventor 常林王陈刘廷瑞闫恪涛于瀛洁郑维伟徐瞿磊孙涛
Owner SHANGHAI UNIV
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