Optimal Linear Feedback Control—OLFC Applied to a Small Turbine Operating in Region II

Wind energy production is growing year after year, increasing the share of wind energy in global energy sources. The amount of energy obtained depends on the wind speed. When wind speeds are below the nominal value, the goal is to maximize energy production. To optimize energy extraction under these conditions, the study employs the optimal torque (OT) control method in combination with the Optimal Linear Feedback Control (OLFC) technique. Although the OLFC method was developed some time ago, the literature has not yet thoroughly explored its application to wind turbines. This work aims to evaluate the dynamic response and energy output of a small-scale wind turbine equipped with an OLFC. Performance is evaluated relative to the uncontrolled system. The results demonstrate that the turbine controlled by the OLFC strategy maintained optimal operating conditions throughout the evaluation period under all wind scenarios. In contrast, the uncontrolled turbine exhibited inferior performance and failed to achieve the desired optimal parameters. The controlled turbine also shows a higher generated power than the uncontrolled turbine across all evaluated wind conditions. The OLFC technique demonstrated satisfactory performance, was simple to implement, and did not require system linearization.