Pulsed LIDAR-assisted Controllers for Turbine Power Capture Enhancement and Fatigue Load Mitigation Below Rated

Both turbine power capture enhancement and fatigue load mitigation are investigated in this paper using a previewed wind measurement provided by a pulsed light detection and ranging (LIDAR) system. When the wind turbine is operating below rated wind speed, three LIDAR-assisted control strategies are proposed: the disturbance tracking control (DTC) augmented with LIDAR, the preview control, and the optimally tracking rotor (OTR) control augmented with LIDAR. The DTC with LIDAR and preview controller are combined with a linear quadratic regulator (LQR) in the feedback path, while OTR is a strategy adapted from the baseline quadratic k 2 torque law feedback. These control strategies are simulated in 93 turbulent wind les and their performance is compared against with the baseline control k 2 .