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  4. Converter impedance characterization for stability analysis of low-voltage DC-grids
 
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2014
Conference Paper
Title

Converter impedance characterization for stability analysis of low-voltage DC-grids

Abstract
The paper discusses aspects of modelling and operation of low-voltage DC-grids with aggregated power and load modules in terms of small-signal stability. Multiple power modules connected to the common DC-bus potentially may become a reason of voltage instabilities due to background harmonics interactions. Unfortunately, in a practical grid implementation, usually the internal structure of the converters including control algorithms and parameters is not fully known for the users. A technique of experimental impedance identification, applied to each module and which consequently enables for the relatively simple and effective analysis of the aggregated system, is described.
Author(s)
Rykov, K.
Duarte, J.L.
Szpek, M.
Olsson, J.
Zeltner, S.  orcid-logo
Ott, L.
Mainwork
IEEE PES Innovative Smart Grid Technologies Conference, ISGT 2014  
Conference
Innovative Smart Grid Technologies Conference (ISGT) 2014  
DOI
10.1109/ISGT.2014.6816385
Language
English
Fraunhofer-Institut für Integrierte Systeme und Bauelementetechnologie IISB  
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