Concept design and dynamic analyses of a floating vertical-axis wind turbine: case study of power supply to offshore Greek islands

Concept design of floating wind turbines consisting of a column-supported semi-submersible and a vertical-axis wind turbine are proposed. Detailed motion response analyses of the proposed floating wind turbines are carried out using a computer program developed in this study. Together with wave-induced oscillatory motions, steady and slowly varying motions induced by waves and winds are also examined. As a case study, the feasibility of power supply to offshore Greek islands from the proposed floating wind turbines is examined.