Aero-elastic Responses Analysis of Wind Turbine Tower-blade Coupled Model in Yaw Condition

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (18) : 33-38.

Ke Shitang; Wang Tongguang

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Abstract

A fast method to calculate aero-elastic responses of wind turbine tower-blade coupled structure is proposed. By the 5 MW wind turbine system designed by Nanjing University of aeronautics and astronautics as the example, the finite element model of a wind turbine tower-blade coupled model is established to obtain the information of dynamic characteristics. The harmonic superposition method and modified blade element momentum theory are applied to calculate aerodynamic load, which considers the influence of yaw conditions. The mode superposition method is used to calculate the kinetic equation of wind turbine system, the blade velocity and dynamic load are updated through iterative loop, then the aero-elastic responses of wind turbine system is finished. Finally the influence rule of yaw angle on wind-induced responses is discussed. The research could contribute to wind-resistant design of structure for a large-scale wind turbine tower-blade system.

Key words

Wind turbine tower-blade coupled system / yaw angle / aerodynamic load / blade element momentum theory / aero-elastic response

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Ke Shitang; Wang Tongguang. Aero-elastic Responses Analysis of Wind Turbine Tower-blade Coupled Model in Yaw Condition[J]. Journal of Vibration and Shock, 2015, 34(18): 33-38

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