Semiactive control for floating offshore wind turbines subject to aero-hydro dynamic loads

N. Luo, C.L. Bottasso, H.R. Karimi, M. Zapateiro
2011 The Renewable Energies and Power Quality Journal (RE&PQJ)  
Wind and wave dynamic loads might cause undesirable vibrations that affect the structure integrity and system performance of floating offshore wind turbines. This paper addresses the problem of dynamic load mitigation by using semiactive control techniques with the tuned liquid column dampers placed on the turbine's tower. The control law is formulated based on the mixed H 2 /H ∞ methods for ensuring the system stability and reliability. Furthermore, the proposed controller only uses output
more » ... nly uses output feedback so as to avoid the dependence on the knowledge of the states of the system. Key words Floating wind turbines, offshore wind energy, semiactive control, mitigation of dynamic loads and vibrations, liquid column dampers.
doi:10.24084/repqj09.449 fatcat:o3logq6qonffbbzwylaxz4hbfa