Terminal Sliding Mode Control for Fractional-order DC-DC Buck Converter

摘要

Owing to these theories that the capacitor and inductor are fractional-order differential properties of circuit component are studied and cognized, DC-DC buck converter circuit modeling that considering these theories are being put forward. Moreover, terminal sliding mode control method is considered the one of the most ideal methods for DC-DC buck converter system in recent years. In order to analyze and study incommensurate fractional-order buck converters which differ from the previous studies assumed buck converters are second-order or commensurate fractional systems, this paper will be utilized fractional-order terminal sliding mode control method. Therefore, a new sliding mode surface involved fractional-order differential properties will be presented. The simulations showed that terminal sliding mode control can converge tracking error to zero in finite time. But what is even more important is that it can enrich incommensurate fractional-order buck converters theory.