Sequence-based control for standalone and networked switching power converters

A sequence-based control (SBC) scheme is described that directly controls the switching sequences of the power devices without the need for an intermediate pulse-width modulator as in conventional power converter control schemes. SBC involves identifying the set of feasible sequences of switching states using a composite Lyapunov functions for global stability. Subsequently, by solving an optimization problem, an optimal switching sequence (comprising a union of feasible sequences) and corresponding time horizon for each switching state of the sequence is determined. The application of SBC to standalone and homogeneously and heterogeneously networked power converters is demonstrated.