Voltage control of DC islanded microgrids: A decentralized scalable approach

Michele Tucci, Stefano Riverso, Juan Carlos Vasquez Quintero, Josep M. Guerrero, Giancarlo Ferrari-Trecate

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Abstrakt

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.
OriginalsprogEngelsk
Titel54th IEEE Conference on Decision and Control
Antal sider6
ForlagIEEE Press
Publikationsdatodec. 2015
Sider3149 - 3154
ISBN (Elektronisk)978-1-4799-7884-7
DOI
StatusUdgivet - dec. 2015
Begivenhed54th IEEE Conference on Decision and Control - Osaka, Japan
Varighed: 15 dec. 201518 dec. 2015

Konference

Konference54th IEEE Conference on Decision and Control
LandJapan
ByOsaka
Periode15/12/201518/12/2015

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