The aim of this paper is to develop an active structural control scheme to control wind turbine nacelle/tower out-of-plane vibration. An active tuned mass damper (ATMD) is designed an placed inside the turbine nacelle. An EulerLagrangian wind turbine model based on energy formulation is developed for this purpose, which considers the structural dynamics of the system and the interaction between in-plane and out-of-plane vibrations. Also, the interaction between the blades and the tower including the ATMD is considered. The wind turbine is subjected to gravity and turbulent aerodynamic loadings. A three-dimensional (3D) model of a wind turbine foundation is designed and analysed in the finite element geotechnical code PLAXIS. The rotation of the foundation is measured and used to calculate a rotational spring constant for use in wind turbine models to describe the soil-structure interaction (SSI) between the wind turbine foundation and the underlying soil medium. Damage is induced in the soil medium by a loss in foundation stiffness. The active control scheme is shown to reduce nacelle/tower vibration when damage occurs.
[1]
Kana Horikiri,et al.
Aerodynamics of wind turbines
,
2011
.
[2]
Biswajit Basu,et al.
Passive control of wind turbine vibrations including blade/tower interaction and rotationally sampled turbulence
,
2008
.
[3]
Biswajit Basu,et al.
Dynamic analysis of wind turbines including soil-structure interaction
,
2012
.
[4]
J. Jonkman,et al.
Definition of a 5-MW Reference Wind Turbine for Offshore System Development
,
2009
.
[5]
Biswajit Basu,et al.
Active tuned mass dampers for control of in‐plane vibrations of wind turbine blades
,
2013
.
[6]
T. L. Zhu,et al.
The vibrations of pre-twisted rotating Timoshenko beams by the Rayleigh–Ritz method
,
2011
.
[7]
J. R. Connell.
The spectrum of wind speed fluctuations encountered by a rotating blade of a wind energy conversion system
,
1982
.