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Intelligent controller and method reducing shimmy of fan blade

An intelligent controller and fan blade technology, which is applied in the control of wind turbines, wind power generation, wind turbines, etc., can solve the problems of few applications, difficult application of control damping measures, limited research on blade vibration control methods, etc. Rod, enhance safety factor, reduce fatigue load effect

Inactive Publication Date: 2016-01-06
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the blades, the layout, installation and maintenance of the controller are very difficult, and the conventional control damping measures are difficult to apply
At present, the research on blade vibration control methods is limited, and the application is seldom, and the method of effectively controlling blade vibration needs further research

Method used

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  • Intelligent controller and method reducing shimmy of fan blade
  • Intelligent controller and method reducing shimmy of fan blade
  • Intelligent controller and method reducing shimmy of fan blade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0040] (1) The wind turbine uses VestasV80 2MW fan, and the scheme is implemented under strong wind load. At this time, the corresponding pitch angle is 90°;

[0041] (2) Select the triangular membership function as the fuzzy set;

[0042] (3) The total number of control rules n=7;

[0043] (4) The displacement universe is set to [0,0.1], the corresponding input fuzzy universe is [0,1], and the quantization factor is 10.5;

[0044] (5) The speed domain is set to [-0.147,0.163], the corresponding input fuzzy domain is [-1,1], and the quantization factor is 6.5;

[0045] (5) The output fuzzy universe is set to [0,1], and the corresponding scaling factor is 2.25;

[0046] control results such as Figure 4 with Figure 5 As shown, it can be seen that the control scheme can effectively control the shimmy of the blade.

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Abstract

The invention discloses an intelligent controller and method reducing the shimmy of a fan blade. A steel truss is arranged inside the blade. A magneto-rheological damper and an acceleration sensor are fixed to the steel truss. A computer obtains the acceleration information of the assigned point of the blade. The voltage needing to be provided is obtained through the fuzzy algorithm, the movement of the magneto-rheological damper is controlled, and therefore the shimmy of the fan blade is reduced. By means of the intelligent controller and method, the characteristic that the internal space of the blade is narrow and closed is overcome, a certain control function can be achieved for the blade shimmy in a wind power generator, the fatigue load of the fan can be reduced, and the safety coefficient of the blade in the using process is increased.

Description

technical field [0001] The invention belongs to the technical field of wind power generators, in particular to an intelligent control technology for reducing the vibration of wind power generator blades. Background technique [0002] The magnetorheological damper is an intelligent drive device made of magnetorheological fluid. Its characteristic is that by controlling the magnetic field, the magnetorheological fluid can achieve reversible changes in free flow, viscous flow and semi-solid state within milliseconds. Wide dynamic range, freely controllable yield strength, simple structure, fast response, large damping force and continuous forward and reverse adjustment. Therefore, it has shown great potential in structural vibration control in recent years, both as an excellent passive energy-dissipating damper and as an ideal semi-active control actuator. [0003] The fuzzy system is based on fuzzy logic. Compared with traditional binary logic, fuzzy logic is closer to human ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/00
CPCY02E10/72
Inventor 苑晨阳李静陈健云徐强顾太欧
Owner DALIAN UNIV OF TECH
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