Fluid inerter for optimal vibration control of floating offshore wind turbine towers

This paper proposes the use of a tuned mass damper fluid-inerter (TMDFI) for vibration control spar-type floating offshore wind turbine towers. The an inerter in parallel with spring and (TMD) is relatively new concept. ideal has amplification effect on classical TMD leading to greater capabilities. Previous work by authors shown that based TMDs have great potential turbines where enhanced mitigation can be achieved using lighter device than TMDs. However, this previous was assumption assumes mechanical flywheel type inerter. Mechanical inerters some inherent disadvantages due their complexity design high cost maintenance. fluid alleviate these as its rather simple it comes very low Such devices been proposed investigated literature, however, applicability not researchers. optimal TMDFI presented paper. It optimization six-dimensional non-linear problem whose solution hyperplane contains multiple local minima. A systematic way developed paper, avoiding metaheuristic search techniques, optimize while providing insight into properties offers set guidance designer. Numerical results demonstrate impressive capabilities under various stochastic wind-wave loads. performs well considerable advantages over demonstrated makes exciting candidate control.