IDENTIFICATION OF WIND TURBINE BLADE ANTI-BENDING STIFFNESS BASED ON COMPACT DIFFERENCE SCHEME
Identifying the distribution of wind turbin blade flexural stiffness in practical scenarios poses a significant challenge.To address this issue,this study proposes a novel blade flexural stiffness identification method based on two key components:single point static load deflection fitting and a compact finite difference scheme.By establishing a comprehensive mathematical model that captures blade bending deformation under static load calibration conditions,this study derives precise expressions for deflection and anti-bending stiffness for each section of the blade.Extensive analysis on various blade types reveals that the anti-bending stiffness identification error in the midsection of the blade remains below 5%,thus validating the effectiveness of the proposed method.
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