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Modelling of aggregated operation of power modules in low-voltage DC-grids

: Rykov, K.; Ott, L.; Duarte, J.L.; Lomonova, E.A.


Institute of Electrical and Electronics Engineers -IEEE-:
16th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2014. Vol.3 : Lappeenranta, Finland, 26 - 28 August 2014
Piscataway, NJ: IEEE, 2014
ISBN: 978-1-4799-3015-9
ISBN: 978-1-4799-3016-6
European Conference on Power Electronics and Applications (EPE) <16, 2014, Lappeenranta>
Energy Conversion Congress and Exposition (ECCE) <2014, Lappeenranta>
Conference Paper
Fraunhofer IISB ()

The paper focuses on small-signal analysis of aggregated operation of the low-voltage DC-grids comprising various power and load modules. Complex impedances, which can be identified experimentally, represent the internal structure of power converters and may become a reason for voltage instabilities while being gathered together in the DC-grid using cables. The paper proposes ideas to analyze and forecast possible resonance issues of parallel operation of power modules in the test model of the 380V DC-grid and make recommendations in order to avoid them.