Paper Info
Title
Stable current sharing and voltage balancing in DC microgrids: A consensus-based secondary control layer.
Abstract
In this paper, we propose a secondary consensus-based control layer for current sharing and voltage balancing in DC microGrids (mGs). To this purpose, we assume that Distributed Generation Units (DGUs) are equipped with decentralized primary controllers guaranteeing voltage stability. This goal can be achieved using, for instance, Plug-and-Play (PnP) regulators, which allow one to analyze the behavior of the closed-loop mG by approximating local primary control loops with either unitary gains or first-order transfer functions. Besides proving exponential stability, current sharing, and voltage balancing, we describe how to design secondary controllers in a PnP fashion when DGUs are added or removed. Theoretical results are complemented by simulations, using a 7-DGUs mG implemented in Simulink/PLECS, and experiments on a 3-DGUs mG.
Year
DOI
Venue
2018
10.1016/j.automatica.2018.04.017
Automatica
Keywords
Field
DocType
DC microgrids,Current sharing,Voltage balancing,Consensus algorithms,Stability analysis
Control layer,Voltage stability,Control theory,Voltage,Exponential stability,Unitary state,Transfer function,Distributed generation,Mathematics,Current sharing
Journal
Volume
Issue
ISSN
95
1
0005-1098
Citations 
PageRank 
References 
9
0.58
17
Authors
4
Name
Order
Citations
PageRank
Michele Tucci1406.25
lexuan meng2325.42
Josep M. Guerrero31376193.89
Giancarlo Ferrari-Trecate483177.29