The effect of shear web on the dynamic response of a wind turbine blade subjected to actual dynamic load

Abstract

The advent of wind turbines has enabled mankind to utilize renewable energy sources for the development of power. The blade being the most crucial part and the design of the same remains a challenge since it is subjected to dynamic loads due to the rotation of the blade along with unsteady wind velocity. The prediction of the dynamic wind loads acting on the blade is a difficult task and thus this has been analyzed in the present work. Two different approaches have been proposed to predict accurately the variation of the wind loads acting on the rotor using the unsteady blade element momentum theory. The effect of gravity has also been accounted for in computing the response of the structure. The effect of the position of shear web and the number of shear webs on the response of the structure has also been analyzed in the present work.

Dynamic Response Analysis of Wind Turbine Structure to Turbulent Wind Load: Comparative Assessment in Time and Frequency Domains

“…Therefore, the dynamic response analysis of wind turbine structures can be performed using either the time domain method, the frequency domain method or a combination of both. Some studies preliminarily utilize the time domain method to represent different load conditions and dynamic responses, with a few results represented in the frequency domain [12][13][14][15][16][17]. Conversely, the frequency domain method is predominantly used to analyze the dynamic response of the structure to various load conditions [18], although both methods can also be implemented for load conditions and responses [19][20][21][22][23].…”