Using metamaterial to control offshore wind turbine vibrations
Palavras-chave:
Wind turbine dynamic analysis, Metastructure, Vibration control, Tuned mass damper.Resumo
Wind energy is one of the renewable sources in fast development and implementation worldwide.
Developing competitive renewable energies and energy supply networks, e.g. offshore wind turbines (OWT), is
essential to guarantee a sustainable power supply in cities and megacities. In these scenarios, a reliable energy
supply is crucial. These large and flexible structures are vulnerable to external vibration sources such as wind, sea
waves and earthquake excitation. It is necessary to mitigate the dynamic responses of offshore wind turbines to
ensure the safety of these structures. The OWT selected is a National Renewable Energy Lab (NREL) monopile
5 MW baseline wind turbine. This OWT is a conventional three-bladed variable-speed, pitch-to-pitch, upwind-
controlled turbine. This paper explores using metamaterial to control vibrations from offshore wind turbine tower
modes. The effectiveness of the proposed control is numerically investigated. The outcomes reveal the benefit of
using the metamaterial compared to conventional tuned damped mass passive controls.
