Distributed multi-agent control of parallel Cúk converters using feedback linearization

A distributed control scheme, based on feedback linearization, is proposed for proper current sharing in parallel Cúk converters. Compared to the conventional master-slave control method used in parallel converters, the proposed distributed scheme enjoys modularity, improved reliability, and more design flexibility; it also eliminates the necessity for a central master controller. The nonlinear state-space average model of the multiphase Cúk converter is developed. Feedback linearization is used to transform the nonlinear average model to an equivalent single-integrator dynamics. A distributed control protocol is developed for the single-integrator dynamic model and numerical switch-level simulations are presented to verify the performance of the proposed method.