Method for initiatively controlling dynamic balance of wind power generator oar blade

Abstract

The invention relates to a method for actively controlling dynamic poise of a blade of a wind power generator. The method is characterized in that a liquid flowing pipeline is made up of liquid storing boxes arranged at the point of an inner cavity of the blade and the middle part of an impeller boss and a pipeline and a pump connected with the liquid storing boxes at the two positions, or a liquid storing box arranged at the point of the inner cavity of the blade and the pipeline and the pump arranged on the middle part of the impeller boss; the vibration of a bearing support of the impeller boss and the detection of a phase position are realized by a dynamic poise detection controller which is arranged on the same wind power generator, can detect the vibration of the bearing support of the impeller boss of the wind power generator and controls the operation the corresponding pump according to the degree of the vibration and the phase control, the size and the direction of an unbalanced force are calculated; meanwhile, liquid inside each liquid storing box at the point of the blade is distributed by controlling the corresponding pump to ensure that all blades of the wind power generator are in a dynamic poise working state, thereby ensuring that the blade of the wind power generator in a non-dynamic poise state achieves the dynamic poise and providing the technical support for the normal and safe operation of the wind power generator.

Description

technical field [0001] The invention relates to a wind power engine balanced operation technology, in particular to a method for actively controlling the dynamic balance of wind power generator blades, which belongs to the category of fault diagnosis and safety automatic control methods. It is suitable for dynamic balance control of wind turbine blades and impellers to prevent accidents such as fatigue, short life and even rapid destruction caused by strong vibration of wind turbines caused by dynamic imbalance of blades and major economic losses. Background technique [0002] The blades of wind power generators commonly used at present generally carry out static balance correction during manufacture, and its measures are: control the total mass (M) of each blade; control the distance between the center of mass of each blade and the blade heel ( L), in order to achieve that each blade has the same or similar static moment J=LM relative to its main shaft, and it is expected t...

AI Technical Summary

Problems solved by technology

[0003] However, the impeller, hub, and main shaft system composed of blades not only vibrate due to the static imbalance of each blade, but also mainly due to the dynamic deformation imbalance and aerodynamic imbalance of the blades, and this It cannot be solved only by static balance detection and correction of blades

The reason is that existing wind power generators, even large wind power generators, do not have an active control system for controlling the dynamic balance of the wind blades.

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