Concept of Inductor with a Virtual Air Gap for Increasing Fault Current Capability in Traction Drive Applications

2022 13th National Conference with International Participation (ELECTRONICA 2022): Proceedings 2022
Kaspars Kroičs, Jaroslavs Zarembo

Energy efficiency is important in many applications including electrical drives. DC powered electrical traction drives require an input filter to limit voltage fluctuations, electromagnetic interference, and fault currents. The losses in the inductor of the input filter can be reduced by applying a magnetic core and by reducing the number of windings. High fault current can lead to saturation of the core thus resulting in substantial inductance reduction. This paper analyzes the possibility of introducing a virtual air gap to limit core saturation and limit fault current. The FEM simulation method is used to analyze the magnetic flux in the core. The results shows that the proposed method can be useful for such applications, but additional control is required to control the current in the electrical circuit that creates a virtual air gap.

Atslēgas vārdi
electrical drives | FEM | filter | inductor | magnetic circuits
DOI
10.1109/ELECTRONICA55578.2022.9874364
Hipersaite
https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9874364

Kroičs, K., Zarembo, J. Concept of Inductor with a Virtual Air Gap for Increasing Fault Current Capability in Traction Drive Applications. No: 2022 13th National Conference with International Participation (ELECTRONICA 2022): Proceedings, Bulgārija, Sofia, 19.-20. maijs, 2022. Piscataway: IEEE, 2022, 1.-4.lpp. ISBN 978-1-6654-8101-4. e-ISBN 978-1-6654-8100-7. Pieejams: doi:10.1109/ELECTRONICA55578.2022.9874364

Publikācijas valoda
English (en)