Vibration control of a wind turbine with a hybrid mass damper

Resumo

It is studied the application of structural control in the protection of wind turbines subjected to external
loads, such as wind and earthquake, which can compromise the safety and integrity of the structure with 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. It is a more robust and reliable control when compared only to active and passive
dampers. The objective of this research is to numerically analyze the behavior of a dynamically loaded wind
turbine and apply a hybrid control system. A comparative study of the performances obtained by different
controllers is presented, such as proportional integral derivative (PID) and linear quadratic regulator (LQR).
Numerical simulations are performed using the Matlab computational package and its Simulink control toolbox.
A wind turbine tower has been analyzed using the technique of reducing tall towers to a single degree of freedom.
The results showed that the HMD was efficient in controlling the dynamic response of the tower.