Research on Effect of Wind Gust on Wind Turbine Vibration Characteristics

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (21) : 47-52.

DING Qinwei1, LI Chun1,2, YE Zhou1,2, KAN Wei1

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Abstract

Wind turbine suffers from complex environmental conditions and wind is the most important and direct factor that can affect the aerodynamic and structural characteristics. Abrupt wind speed change would lead to higher aerodynamic loads. In order to analyze the vibration characteristic of structure dynamics of wind turbine operating on a strong turbulent wind, simulation was carried out based on NREL WindPACT 1.5MW land-based wind turbine model to study the dynamic response of wind turbine blades and tower. The results conclude that before and after adding coherent structure, wind speed at hub point fractal dimension are both around 1.5. Adding coherent structure to turbulent flow results to higher wind speed change and stronger turbulent intensity compared with basic turbulent wind. When the wind achieves to ultimate speed, wind rotors experience both in-plane and out-plane vibrations. Turbulent wind with coherent structure increase several times of vibration of rotors and tower.

Key words

wind turbine / coherent structure / deflection / vibration / acceleration

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DING Qinwei1, LI Chun1,2, YE Zhou1,2, KAN Wei1. Research on Effect of Wind Gust on Wind Turbine Vibration Characteristics[J]. Journal of Vibration and Shock, 2016, 35(21): 47-52

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