IDENTIFICATION OF WIND TURBINE BLADE ANTI-BENDING STIFFNESS BASED ON COMPACT DIFFERENCE SCHEME

Ma Yi; Zhou Aiguo; Shi Jinlei; Zhao Shiwen; Zhu Yutian

doi:10.19912/j.0254-0096.tynxb.2023-0545

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (8) : 523-528. DOI: 10.19912/j.0254-0096.tynxb.2023-0545

IDENTIFICATION OF WIND TURBINE BLADE ANTI-BENDING STIFFNESS BASED ON COMPACT DIFFERENCE SCHEME

Ma Yi, Zhou Aiguo, Shi Jinlei, Zhao Shiwen, Zhu Yutian

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Abstract

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.

Key words

wind turbine blades / anti-bending stiffness / curve fitting / calibration / compact difference scheme

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Ma Yi, Zhou Aiguo, Shi Jinlei, Zhao Shiwen, Zhu Yutian. IDENTIFICATION OF WIND TURBINE BLADE ANTI-BENDING STIFFNESS BASED ON COMPACT DIFFERENCE SCHEME[J]. Acta Energiae Solaris Sinica. 2024, 45(8): 523-528 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0545

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