HYBRID MASS DAMPER COUPLED TO A WIND TURBINE TOWER: A PARAMETRIC STUDY

Resumo

In this work, it is studied the application of structural control in the protection of wind turbines subject
to external loads, such as wind and earthquake, which can compromise the safety and integrity of the structure due
to excessive vibrations. Structural control can be classified as passive, active, hybrid, or semi-active control. The
structural control device used is the hybrid mass damper (HMD), which is the combination of a tuned mass damper
(TMD) with an active controller. The aim of this research is to analyze, numerically, the behavior and efficiency
of the HMD using the Instantaneous Optimal Control (IOC) control algorithm to calculate the control force, and
present a parametric study that looks for the most appropriate weighting matrices to ensure the robustness of the
control system by minimizing the permanent response of the main system. In this study, the performance of the
Instantaneous Optimal Control (IOC) to control the dynamic seismic and wind response in the tower of a wind
turbine with a hybrid mass damper will be performed through a parametric study according to the variation of the
coefficients of the weighting matrices. The results of the IOC certify the efficiency of the controller through
numerical simulations carried out using the computational package MAPLESOFT, MATLAB, and its Simulink
control toolbox.