Special Issue on Dynamics and Control of Offshore and Onshore Wind Turbine Structures

Evaluation of Turbulence on the Dynamics of Monopile Offshore Wind Turbine under the Wave and Wind Excitations

In recent years, the use of offshore wind turbines has been considered on the agenda of the countries which have a significant maritime boundary due to more speed and stability of wind at sea. The aim of this study is to investigate the effect of wind turbulence on the aero-hydrodynamic behavior of offshore wind turbines with a monopile platform. Since in the sea, the wind turbine structures ar...

Foundation damping and the dynamics of offshore wind turbine monopiles

The contribution of foundation damping to offshore wind turbines (OWTs) is not well known, though researchers have back-calculated foundation damping from “rotor-stop” tests after estimating aerodynamic, hydrodynamic, and structural damping with numerical models. Because design guidelines do not currently recommend methods for determining foundation damping, it is typically neglected. This pape...

Reliability analysis of monopile offshore wind turbine support structures

We probe the reliability of monopile support structures designed to support industrial scale turbines along the coastal United States using stochastic models for the wind and wave loadings, and representations of the uncertainty associated with soil properties. The turbine support structure investigated is that promulgated by the National Renewable Energy Laboratory as typical of a monopile sup...

Special Issues on Design Optimization of Wind Turbine Structures

A wind turbine is a device that exploits the wind’s kinetic energy by converting it into useful mechanical energy. It basically consists of rotating aerodynamical surfaces (blades) mounted on a hub/shaft assembly, which transmits the produced mechanical power to the selected energy utilizer (e.g. milling or grinding machine, pump, or generator). A control system is usually provided for adjustin...

Structural integrity monitoring of onshore wind turbine concrete foundations