A lyapunov function-based switched control method for power source

Abstract Standard power sources have wide applications in fields such as healthcare, measurement and control, education, scientific research, and metrology. This paper proposes a switched control method based on the Lyapunov function for power sources based on digital power amplifiers run as inverters and a new selection method for switching states. Combining the two methods in power sources ensures and improves the system’s stability. In addition, the proposed switching state selection method reduces the computation of the power source system, and the switching loss of IGBTs decreases and is distributed. A MATLAB/Simulink model utilizing the switching state selection method and Lyapunov function is developed, confirming its feasibility.