摘要

In order to prevent the wind turbine blade from breaking under load, piezoelectric material is embedded into the wind turbine blade to form an intelligent blade structure.The control voltage is applied to the piezoelectric material in the blade according to the load change, and the inverse piezoelectric effect of the piezoelectric material is used to suppress the vibration of the blade of the wind turbine, so as to improve the life of the blade and the efficiency of the wind turbine.Blade structure and vibration control effect are greatly affected by different laying thickness and arrangement mode of base material and piezoelectric material of blade.This kind of layout method like [0°/ 45°/0°0°/ 45°/0°] is used to model the blade.And stress-strain and displacement of piezoelectric material embedded in blade under controlled voltage are analyzed by finite element method.The results show that multilayer piezoelectric materials need to be laid for vibration suppression of intelligent blades.

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