@ARTICLE{Maciołek_T._Influence_2020, author={Maciołek, T. and Lewandowski, M. and Szeląg, A. and Steczek, M.}, volume={68}, number={No. 4 (i.a. Special Section on Advances in Electrical Power Engineering)}, journal={Bulletin of the Polish Academy of Sciences Technical Sciences}, pages={759-768}, howpublished={online}, year={2020}, abstract={Short-term contact losses between a pantograph and a contact wire are not included in the standards nor are they taken into account in evaluating pantograph-contact wire interaction. These contact losses, however, accelerate wear and tear as well as disturb operation of vehicles’ drive systems. The article presents the effects of short-term contact breaks as well as an analysis of impact of contact breakages on a vehicle’s current at 3 kV DC power supply. Results of voltage and current oscillations measured in real conditions when pantograph of a DC driven chopper vehicle was running under isolators were presented. Then a simulation model of a vehicles with ac motors and voltage inverters was derived to undertake simulation experiments verifying operation of such a vehicle in condition similar to those measured in real condition.}, type={Article}, title={Influence of contact gaps on the conditions of vehicles supply and wear and tear of catenary wires in a 3 kV DC traction system}, URL={http://ochroma.man.poznan.pl/Content/116529/PDF/12_759-768_01510_Bpast.No.68-4_27.08.20.pdf}, doi={10.24425/bpasts.2020.133373}, keywords={pantograph, overhead line, pantograph-catenary interaction, contact losses, traction drive}, }