Dynamics and control of switchmode power conversions in distributed power systems

Abstract

Comprehensive analysis, modeling, and design techniques are developed for distributed power systems. Dynamic interactions caused by paralleling, stacking, and cascading converter modules are analyzed. Incorporating the effects of all subsystem interactions, systematic design procedures are established in order to optimize the dynamic performance of large-scale distributed power systems. An advanced three-loop control scheme is developed to optimize the dynamics of multimodule converters. A design-oriented model reduction technique is employed to design power supplies utilizing a stacked configuration of multi-module converters. An unterminated modeling and design approach is proposed to optimize the dynamics of cascaded converter stages, while ensuring the stability and compatibility of the integrated system. Systematic design procedures for intermediate filters are developed.