A robust consensus algorithm for current sharing and voltage regulation in dc microgrids

Michele Cucuzzella*, Sebastian Trip, Claudio De Persis, Xiaodong Cheng, Antonella Ferrara, Arjan van der Schaft

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

35 Citations (Scopus)
340 Downloads (Pure)


In this paper, a novel distributed control algorithm for current sharing and voltage regulation in DC microgrids is proposed. The DC microgrid is composed of several distributed generation units, including buck converters and current loads. The considered model permits an arbitrary network topology and is affected by an unknown load demand and modeling uncertainties. The proposed control strategy exploits a communication network to achieve proportional current sharing using a consensus-like algorithm. Voltage regulation is achieved by constraining the system to a suitable manifold. Two robust control strategies of sliding mode type are developed to reach the desired manifold in a finite time. The proposed control scheme is formally analyzed, proving the achievement of proportional current sharing, while guaranteeing that the weighted average voltage of the microgrid is identical to the weighted average of the voltage references.
Original languageEnglish
Pages (from-to)1583-1595
Number of pages13
JournalIEEE Transactions on Control Systems Technology
Issue number4
Early online date3-May-2018
Publication statusPublished - Jul-2019


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