Extension of characteristic equation method to stability analysis of equilibrium points for closed-loop PWM power switching converters

Abstract

An extension of characteristic equation analysis method to the stability analysis of equilibrium points for closed-loop PWM power switching converters is introduced based on equivalent small parameter method. The basic principle of the method is described in detail. The provided example shows that the method, incorporating with the system's state-plane trajectories, offers the advantages of both simplicity and practicality.