Abstract It is desirable to control pitch motion of semi-submersible wind platforms reduce turbine hub acceleration and increase structural fatigue life. This achieved by balancing the moment on platform due heave float excitation generating a differential internal head water between floats though pump. demonstrated with an experimentally validated linear diffraction-radiation-drag model ideali...

The installation of fixed offshore wind power systems at greater water depths requires a floating body the foundation system. However, this presents various issues. This study analyzes characteristics platform motion turbine system based on performance pitch controller. in generation system, change according to response speed blade controller since is installed unlike existing onshore Therefore...

the sirri jacket offshore platform was designed and installed in persian gulf of iran in 1975 and has been in service since that time. the importance of offshore structure's stability and the failure of this kind of structure during an earthquake in different active zones revealed that earthquake loading has to be considered. in this paper, magnetorheological (mr) fluid dampers have been propos...

The hybrid concept of multi-type wave energy converters provides viable solutions to improve the exploitation per-unit area and reduce Levelised Cost Electricity. In this paper, a multi-degree-of-freedom system combining an oscillating surge converter two buoys, is proposed integrated into semi-submersible platform be suitable for both nearshore offshore zones. hydrodynamic characteristics inve...

Abstract. The global floating offshore wind energy industry is rapidly maturing, with several technologies having been installed at pilot and demonstration scales. As the progresses to full array-scale deployments, optimization of marine activities related installation, operation maintenance, decommissioning presents a significant opportunity for cost reduction. This paper reviews various opera...

In this study, a resonance avoidance control algorithm was designed to address the tower problem of semi-submersible floating offshore wind turbine (FOWT) and dynamic performance turbine, floater platform, mooring lines at two exclusion zone ranges were evaluated. The simulations performed using Bladed, commercial software for analysis. length simulation analysis response six degrees freedom (D...