In this paper a novel distributed control algorithm for current sharing andvoltage regulation in Direct Current (DC) microgrids is proposed. The DCmicrogrid is composed of several Distributed Generation units (DGus),interfaced with Buck converters, and current loads. The considered modelpermits an arbitrary network topology and is affected by unknown load demandand modelling uncertainties. The proposed control strategy exploits acommunication network to achieve current sharing using a consensus-likealgorithm. Voltage regulation is achieved by constraining the system to asuitable manifold. Two robust control strategies of Sliding Mode (SM) type aredeveloped to reach the desired manifold in a finite time. The proposed controlscheme is formally analyzed, proving the achievement of current sharing, whileguaranteeing that the average voltage of the microgrid is identical to theaverage of the voltage references. The latter objective is often desired inpractical implementations, but difficult to obtain, even with advanced controlmethodologies, rendering the proposed solution relevant for the furtherdeployment of DC microgrids.
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