Universal approach to modeling current mode controlled converters in distributed power systems for large-signal subsystem interactions investigation

This paper proposes a universal approach (model) to deal with current mode controlled power modules while investigating large-signal interactions among subsystems in a distributed dc power system. By establishing a family of power stage models that embody nonlinearity to an algebraic operation block and keeping all components along in the external feedback control loops staying in simulation, simulation speed can be dramatically accelerated as well as large-signal dynamic properties can be reflected correctly. Mathematic derivation of the models is presented and simulation tests show the validity of the proposed approach.