Modeling of multiport DC busses in power-electronic systems

Matti Liukkonen, Marko Hinkkanen, Jorma Kyyrä, Seppo J. Ovaska

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

8 Citations (Scopus)
270 Downloads (Pure)


This paper deals with dynamic modeling of multi-port DC busses, which are increasingly applied in various DC-power distribution systems, such as hybrid powertrains and DC microgrids. Parasitic impedances of long DC cabling together with distributed DC capacitors introduce a potential risk of small-signal instabilities in the DC bus, if resonance frequencies of the bus appear below (or around) switching frequencies of power-electronic converters. In order to predict the resonance behavior of the bus, a systematic approach for dynamic modeling of the DC bus in power-electronic systems is presented. The DC-bus model is validated by means of experiments. Furthermore, application of the model in small-signal analysis and time-domain simulations is illustrated.
Original languageEnglish
Title of host publicationThe IEEE International Conference on Industrial Technology (ICIT 2013)
Place of PublicationCape Town, South Africa
Number of pages6
ISBN (Electronic)978-1-4673-4568-2
ISBN (Print)978-1-4673-4567-5
Publication statusPublished - 25 Feb 2013
MoE publication typeA4 Conference publication
EventIEEE International Conference on Industrial Technology - Cape Town, South Africa
Duration: 25 Feb 201328 Feb 2013


ConferenceIEEE International Conference on Industrial Technology
Abbreviated titleICIT
Country/TerritorySouth Africa
CityCape Town


  • cable
  • DC bus
  • modeling
  • multiport


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