In this paper, a new controller is designed for OFWTs on the basis of the LPV control with the grid technique. It may cover both Region 2 and Region 3 instead of switching between the generator-torque controller and the blade-pitch controller. In addition, it may ensure the performance and stability at any point in the control region. Also, the additional motions induced by wind and waves are considered. Finally, the new controller is tested by a simulator in MATLAB/Simulink, and the model combining "NREL offshore 5-MW baseline wind turbine" with "OC3-Hywind platform" is chosen as an example for simulation.

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