Model-based design of individual blade pitch and generator torque controllers for floating offshore wind turbines

摘要

In this paper, we design an individual blade pitch controller and a generator torque controller for a floating offshore wind turbine. We use the Multi-Blade Coordinate transformation in the individual pitch controller design for obtaining a suitable linear time-invariant system from a linear periodic system. The torque controller is designed by using the explicit model predictive control. Nonlinear simulations by using a high-fidelity wind turbine simulator FAST show that the proposed control scheme has good power regulation performance with a reduction of blade fatigue loads.