Current-Limiting Droop Control Design and Stability Analysis for Paralleled Boost Converters in DC Microgrids

In this brief, a novel current-limiting droop controller for paralleled dc-dc boost converters loaded by constant impedance Z, current I, or power P loads in dc microgrid is proposed to guarantee closed-loop stability and sharing. Using an improved version of the recently nonlinear controller, inherent property guaranteed each converter independently load type magnitude variations. Then, sufficient conditions ensure entire system with are analytically obtained. Hence, compared existing control methodologies, ensures accurate sharing, tight voltage regulation, limitation when connected load, multiple converters, which introduce dynamics. To verify effectiveness analysis, simulation results three parallel operated experimental two performed under several changes demand.