Comparative study of control strategies for oscillation damping in DC microgrids

Abstract

: Nowadays, the use of converters is attracting increasing attention due to diver-sification of electric power sources. In particular, DC-DC converters are used to ensure the stability in the DC supply responsible for feeding a DC microgrid with constant voltage. Thus, classical and modern controls methodologies are used to ensure the stability of the feed system when connected to a constant power load (CPL). This paper compares control methodologies for pole allocation using Diophantine equation, root locus, linear-quadratic regulator and the Lyapunov equation by using performance indices as integral of square error (ISE), integral of square weighted by time (ISET) and integral of square of control (ISSC).