Adaptive polymorphic deflection adjustment method for wind turbine blades

Abstract

The invention provides a self-adaptation multi-form deflection adjusting method for a wind driven generator blade. The method includes the steps that firstly, when the air speed is high, an adjustingcomponent drives a fan blade component to be switched to a folded state, when the air speed is low, the adjusting component drives the fan blade component to be switched to an unfolded state, and whenthe power generation environment is in the rainfall state, the adjusting component drives the fan blade component to be switched to the semi-folded state and an opening of the fan blade component isin the clockwise direction / anticlockwise direction; then, a deflection control component adjusts the blade in the folded state to make the attack angle of the blade reduced, the deflection control component adjusts the blade in the unfolded state to make the attack angle of the blade increased, and when the power generation environment is in a hurricane state, the deflection control component adjusts the blade to make the attack angle of the blade be zero; and finally, the blade catches wind energy / rainwater gravity potential energy, a blade device can overall rotate in the axial direction ofan outer cylinder, the outer cylinder drives the axis of a rotor to rotate, and in addition, the rotating speed is increased through a transmission so that a generator can be driven to run to generatepower.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to an adaptive polymorphic deflection adjustment method for blades of a wind power generator. Background technique [0002] During the process of generating electricity, the wind speed will determine the speed of the blade rotation. If the blade rotates too fast, the wind will have a strong impact on the blade, which will seriously damage the blade. Therefore, when the wind is strong , the angle of attack of the blade needs to be reduced; when the wind force is small, the angle of attack of the blade needs to be increased. According to the search data of the research team, it is found that a pitch variable mechanism can effectively solve this problem. It can adjust the pitch angle at any time according to the change of wind speed and control the absorbed mechanical energy. On the one hand, it can ensure the maximum wind energy and reduce the impact of wind on the blade...

AI Technical Summary

Problems solved by technology

According to the search data of the research team, it is found that a pitch variable mechanism can effectively solve this problem. It can adjust the pitch angle at any time according to the change of wind speed and control the absorbed mechanical energy. On the one hand, it can ensure the maximum wind energy and reduce the impact of wind on the blades. Impact, which adopts the variable pitch control system and the variable speed constant frequency technology, the structure is relatively complicated, the cost is high, and it brings a lot of inconvenience to the maintenance of the management personnel. Therefore, it is more convenient to adjust the angle of attack of the blade and improve the wind turbine. Efficiency is one of the hottest research directions of wind turbines at present. To this end, the team designed a deformation deflection of wind turbine blades with ingenious structure, simple principle, easier adjustment of blade angle of attack, and ability to accept rainwater potential energy to improve power generation efficiency. adjustment method

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