Switched Control, Single Machine Infinite Bus, Current Sensitivity Model, Power Systems
Abstract
This paper proposes the application of switched control via linear matrix inequalities (LMIs) to the Single Machine Infinite Bus System (SMIB) to ensure stability over low-frequency electromechanical oscillations. The study considers parametric variations in the system load, as well as an external disturbance in the form of an increase in mechanical input power to the generator shaft. Furthermore, the study addresses the computation of state feedback gains using the Lyapunov-Metzler stabilization theory optimized by linear matrix inequalities. The results demonstrate that the proposed controller stabilized the closed-loop SMIB system at all operating points. For future work, an efficient closed-loop pole allocation design is needed to meet small disturbance criteria.
