Research of a PWM-Based New Sliding-Mode Controller for the BUCK Converter

This paper introduces the sliding-mode control theory and the application on the Buck converter, also brings forward a novel method of designing the sliding mode controller. The difference between the novel method and the common methods is that the new method considers system and designs the controller on the three-dimensional space, this method thinks over the information of all elements in the buck circuit adequately. When the Buck converter is working in the continuous current mode (CCM), this paper gets the sliding mode controller´s accessibility condition and the controller´s equation according to calculations, also discusses the stability of this method, and makes simulations for the application of the controller on the Buck converter by the SIMULINK, results of the simulation demonstrate correlative theory of the converter, also testifies the usability of this new method.