PASSIVE VIBRATION CONTROL OF LARGE WIND TURBINE BLADES BASED ON SMA

Zeng Lingqi; Sun Shuangshuang; Wang Yongzhe

doi:10.19912/j.0254-0096.tynxb.2021-0749

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (12) : 227-235. DOI: 10.19912/j.0254-0096.tynxb.2021-0749

PASSIVE VIBRATION CONTROL OF LARGE WIND TURBINE BLADES BASED ON SMA

Zeng Lingqi, Sun Shuangshuang, Wang Yongzhe

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Abstract

SMA layers were pasted on the surface of a large wind turbine blade to form a new intelligent blade structure, the vibration suppression effect ofpseudoelastic SMA on the blade was explored. The three-dimensional shell model of the wind turbine blade was established by the method of combining SolidWorks and Excel software. Based on the ANSYS ACP module, the composite material blade containing SMA was laid and the model was verified. The static response, harmonic response, and random vibration were analyzed.The results show that due to the existence of SMA, under different lateral loads, a closed hysteresis loop is formed between the stress-strain of the SMA; the natural frequency of the blade is moved to a higher frequency, and the amplitude corresponding to each mode is significantly reduced. . When the excitation force frequency is close to the natural frequency of the blade, the response peak appears, and the response is smaller in other frequency ranges. Among them, the maximum amplitude of 3.25 m occurs at a frequency of 0.16 Hz, and the amplitude is reduced by 11.87%. Within the bandwidth of the vibration energy, as the frequency increases, the energy of the vibration gradually decreases. The energy of vibration is mainly concentrated in the range of 0.5 Hz to 2.4 Hz. At the same frequency, the response value of the vibration energy of the wind turbine blade reinforced by the SMA layer is smaller. The cloud diagram of blade displacement distribution further verifies the damping effect of SMA on wind turbine blades.

Key words

wind turbine blades / composite layer / shape memory alloy / vibration control

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Zeng Lingqi, Sun Shuangshuang, Wang Yongzhe. PASSIVE VIBRATION CONTROL OF LARGE WIND TURBINE BLADES BASED ON SMA[J]. Acta Energiae Solaris Sinica. 2022, 43(12): 227-235 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0749

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