In the paper, a coupled aero-hydrodynamic simulation tool in MATLAB/Simulink is developed for simulating the response and performance of offshore floating wind turbines (OFWTs) under wind and waves in the time domain. For aerodynamics, an unsteady blade element momentum (BEM) model and the free vortex wake method (FVM) are chosen to calculate the loads of the wind turbine. For hydrodynamics, the code uses the linearized classic marine hydrodynamic model with Morison's equation to compute the loads of the platform. In addition, a variable speed controller is designed on the basis of the linear parameter-varying (LPV) technique for the wind between the cut-in and rated velocities. Finally, the simulation tool with the controller is tested by cases with different wind and waves.

This content is only available via PDF.
You can access this article if you purchase or spend a download.