Minimax controller design based on backstepping sliding mode for power systems

This study provides a new algorithm to attenuate uncertain disturbances for single machine to infinite system with excitation control by using the combination of backstepping, sliding mode control and Minimax. This scheme has not only succinct design process but also stronger robustness to uncertain disturbances. The Minimax method is introduced to avoid the upper boundary estimate and matching condition of the disturbance problem in traditional backstepping sliding mode design method, thus, ensuring that a single power system has stronger robustness and disturbances attenuation. The simulation considering the unexpected disturbances impact of short-circuit failure and mechanical power disturbances shows the effectiveness of the new algorithm.