Resonance analysis in parallel voltage-controlled Distributed Generation inverters

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Abstract

Thanks to the fast responses of the inner voltage and current control loops, the dynamic behaviors of parallel voltage-controlled Distributed Generation (DG) inverters not only relies on the stability of load sharing among them, but subjects to the interactions between the voltage control loops of the inverters and the remaining system dynamics. This paper addresses the later interactions and the consequent resonances through the frequency-domain analysis of the inverters output impedances and the remaining equivalent network impedance. Furthermore, impacts of the virtual output impedance loop and the voltage feedforward loop in the current controller are evaluated based on such an impedance interactions analysis. Simulation results are presented to confirm the validity of the theoretical analysis.
Original languageEnglish
Title of host publication28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013
Number of pages7
PublisherIEEE Press
Publication date2013
Pages2977 - 2983
ISBN (Print)978-1-4673-4354-1
ISBN (Electronic)978-1-4673-4353-4
DOIs
Publication statusPublished - 2013
EventIEEE Applied Power Electronics Conference and Exposition, APEC 2013 - Long Beach, CA, United States
Duration: 17 Mar 201321 Mar 2013

Conference

ConferenceIEEE Applied Power Electronics Conference and Exposition, APEC 2013
Country/TerritoryUnited States
CityLong Beach, CA
Period17/03/201321/03/2013
SeriesI E E E Applied Power Electronics Conference and Exposition. Conference Proceedings
ISSN1048-2334

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