Reachability analysis of closed-loop switching power converters

Abstract

A design verification method for closed-loop switching power converters is presented in this paper. The method computes the set of reachable states from an initial set of states. Case studies are presented for closed-loop buck converters using this approach. The buck converter is first modeled as a switched linear system. Two controllers are studied, first a simple hysteresis controller, and then a linear controller. The analysis method is automated and uses the hybrid systems reachability analysis tool SpaceEx. The applications and limitations of the analysis method are explored in this study.