The report of European wind energy association [15] surveyed the technical challenges that must be overcome to make the floating wind turbine economically feasible. Apparently, a series of design parameters influence the dynamic behavior, and eventually the cost, of a floating wind turbine. Categorized according to the floating principles, Table 2 is presented showing the impact of various design parameters on the safety and cost of floating wind turbines through surveying into the literatures [15–20, 42].
2. Development of floating wind turbines and application of semi-submersible foundation