DocumentCode :
3743552
Title :
Voltage control of DC islanded microgrids: A decentralized scalable approach
Author :
Michele Tucci;Stefano Riverso;Juan C. Vasquez;Josep M. Guerrero;Giancarlo Ferrari-Trecate
Author_Institution :
Dipartimento di Ingegneria Industriale e dell´Informazione, Università
fYear :
2015
Firstpage :
3149
Lastpage :
3154
Abstract :
We propose a new decentralized control scheme for DC Islanded microGrids (ImGs) composed by several Distributed Generation Units (DGUs) with a general interconnection topology. Each local controller regulates to a reference value the voltage of the Point of Common Coupling (PCC) of the corresponding DGU. Notably, off-line control design is conducted in a Plug-and-Play (PnP) fashion meaning that (i) the possibility of adding/removing a DGU without spoiling stability of the overall ImG is checked through an optimization problem; (ii) when a DGU is plugged in or out at most neighbouring DGUs have to update their controllers and (iii) the synthesis of a local controller uses only information on the corresponding DGU and lines connected to it. This guarantee total scalability of control synthesis as the ImG size grows or DGUs gets replaced. Yet, under mild approximations of line dynamics, we formally guarantee stability of the overall closed-loop ImG. The performance of the proposed controllers is analyzed simulating different scenarios in PSCAD.
Keywords :
"Microgrids","Power system stability","Stability analysis","Control design","Voltage control","Asymptotic stability","Couplings"
Publisher :
ieee
Conference_Titel :
Decision and Control (CDC), 2015 IEEE 54th Annual Conference on
Type :
conf
DOI :
10.1109/CDC.2015.7402691
Filename :
7402691
Link To Document :
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