Comparative study of control strategies for oscillation damping in DC microgrids

Nowadays, with the diversification electric power sources the use of converters is attracting increasing attention. 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, the use of classic and modern controls methodologies is used to ensure the stability of the feed system when connected to a constant power load (CPL). This paper performs a comparative study between control methodologies known by means of pole allocation using Diophantine equation, root locus, linear-quadratic regulator and the Lyapunov equation by using of perfomance index as integral of square error (ISE), integral of square weighted by time (ISET) and integral of square of control (ISSC).