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dc.contributor.authorD'Arco, Salvatore
dc.contributor.authorSuul, Jon Are Wold
dc.contributor.authorFosso, Olav B
dc.date.accessioned2016-01-11T10:46:48Z
dc.date.accessioned2016-03-09T15:03:43Z
dc.date.available2016-01-11T10:46:48Z
dc.date.available2016-03-09T15:03:43Z
dc.date.issued2015
dc.identifier.citationInternational Journal of Electrical Power and Energy Systems 2015, 72:3-15nb_NO
dc.identifier.issn0142-0615
dc.identifier.urihttp://hdl.handle.net/11250/2381913
dc.description.abstractThe concept of Virtual Synchronous Machines (VSMs) is emerging as a flexible approach for controlling power electronic converters in grid-connected as well as in stand-alone or microgrid applications. Several VSM implementations have been proposed, with the emulation of inertia and damping of a traditional Synchronous Machine (SM) as their common feature. This paper investigates a VSM implementation based on a Voltage Source Converter (VSC), where a virtual swing equation provides the phase orientation of cascaded voltage and current controllers in a synchronous reference frame. The control system also includes a virtual impedance and an outer loop frequency droop controller which is functionally equivalent to the governor of a traditional SM. The inherent capability of the investigated VSM implementation to operate in both grid-connected and islanded mode is demonstrated by numerical simulations. Then, a linearized small-signal model of the VSM operated in islanded mode while feeding a local load is developed and verified by comparing its dynamic response to the time-domain simulation of a nonlinear system model. Finally, this small-signal model is applied to identify the dominant modes of the system and to investigate their parametric sensitivity.nb_NO
dc.language.isoengnb_NO
dc.publisherElseviernb_NO
dc.titleSmall-signal modeling and parametric sensitivity of a virtual synchronous machine in islanded operationnb_NO
dc.typePeer reviewednb_NO
dc.typeJournal articleen_GB
dc.date.updated2016-01-11T10:46:48Z
dc.source.journalInternational Journal of Electrical Power and Energy Systemsnb_NO
dc.identifier.doi10.1016/j.ijepes.2015.02.005
dc.identifier.cristin1236170
dc.description.localcode2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)nb_NO


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