Stability analysis of multi-paralleled VSCs with mismatched parameters

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Abstrakt

This paper investigates the instability problem caused by the circulating current in the multi-paralleled voltage-source converters (VSCs) with mismatched parameters. The circulating current may arise in the paralleled converters due to the differences in the LCL filer parameters or the controller gains. It is revealed that the circulating current tends to bring instability among paralleled converters, which will also lead to the unstable total current flowing through the point of common coupling. The conditions of the unstable circulating currents are further identified by means of the impedance modeling and analysis of paralleled converters. Experimental results verify the theoretical analysis.
OriginalsprogEngelsk
TitelProceedings of the 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
Antal sider6
ForlagIEEE Press
Publikationsdatomar. 2019
Sider3508-3513
Artikelnummer8722218
ISBN (Trykt)978-1-5386-8331-6
ISBN (Elektronisk)978-1-5386-8330-9
DOI
StatusUdgivet - mar. 2019
Begivenhed34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 - Anaheim, USA
Varighed: 17 mar. 201921 mar. 2019

Konference

Konference34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
LandUSA
ByAnaheim
Periode17/03/201921/03/2019
SponsorIEEE Industry Applications Society (IAS), IEEE Power Electronics Society (PELS), Power Sources Manufacturers Association (PSMA)
NavnIEEE Applied Power Electronics Conference and Exposition (APEC)
ISSN2470-6647

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