An Investigation of the Parasitic Impedance on the DC-Link Capacitor of EV Drive Inverters

Conference contribution
(Conference Contribution)


Publication Details

Author(s): Piepenbreier S, Käß A, März M
Editor(s): VDE
Publication year: 2018
ISBN: 978-3-8007-4540-1
Language: English


Abstract



The DC-link
capacitor is a key component in electric vehicle drive systems. Main
dimensioning criteria are the DC-link voltage ripple, the DC-link capacitor
current ripple and load dump scenarios. The voltage ripple and the current
ripple of the DC-link also have an effect on the electromagnetic compatibility
(EMC) of the system and on the power losses of the capacitor. Both are affected
by the impedance of the overall drive system.



This
paper shows the influences of the drive system’s parasitic impedances on the
required DC-link capacitance through a variation of single key parameters. The
overall impedance characteristics are analysed and the resonance frequencies are
calculated. The effect of the change of impedance on the DC-link voltage ripple
and capacitor current ripple is illustrated using a building block system for
different car models. Furthermore a calculation method of the voltage ripple
based on impedance characteristics is introduced. This underlines the
importance of the impedance analysis which allows an accurate dimensioning of
the DC-link to save costs, design space and weight.


FAU Authors / FAU Editors

März, Martin Prof. Dr.
Lehrstuhl für Leistungselektronik
Piepenbreier, Stefan
Lehrstuhl für Leistungselektronik


How to cite

APA:
Piepenbreier, S., Käß, A., & März, M. (2018). An Investigation of the Parasitic Impedance on the DC-Link Capacitor of EV Drive Inverters. In VDE (Eds.), Proceedings of the 2018 10th International Conference on Integrated Power Electronics Systems (CIPS). Stuttgart, DE.

MLA:
Piepenbreier, Stefan, Albert Käß, and Martin März. "An Investigation of the Parasitic Impedance on the DC-Link Capacitor of EV Drive Inverters." Proceedings of the 2018 10th International Conference on Integrated Power Electronics Systems (CIPS), Stuttgart Ed. VDE, 2018.

BibTeX: 

Last updated on 2019-09-07 at 09:33