Modeling of multiport DC busses in power-electronic systems

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.

Keywords

cable, DC bus, modeling, multiport

DOI

10.1109/ICIT.2013.6505764

Citation

Liukkonen , M , Hinkkanen , M , Kyyrä , J & Ovaska , S J 2013 , Modeling of multiport DC busses in power-electronic systems . in The IEEE International Conference on Industrial Technology (ICIT 2013) . IEEE , Cape Town, South Africa , pp. 740-745 , IEEE International Conference on Industrial Technology , Cape Town , South Africa , 25/02/2013 . https://doi.org/10.1109/ICIT.2013.6505764

Permanent link to this item

https://urn.fi/URN:NBN:fi:aalto-201609023244

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[article-cris] Sähkötekniikan korkeakoulu / ELEC

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