Parameter study on the electrical contact resistance of axially canted coil springs for high-current systems

Conference contribution
(Conference Contribution)


Publication Details

Author(s): Schriefer T, Hofmann M, Rauh H, Eckardt B, März M
Editor(s): IEEE
Publication year: 2019
Language: English


Abstract

This parameter study
investigates the influence of several design parameters (wire diameter, canted
angle, coil height, spring diameter, number of turns) and amperage on the
contact force and electrical resistance of axially canted coil springs. The
correlations are quantified by a full factorial experiment that is based on a
numerical finite element model. The static load deflection curve of the spring is
experimentally verified by a compression load cell, which links contact forces to
their corresponding spring deflections. Varying amperage and deflection are
applied through a test setup with Four-terminal sensing to measure the total
contact resistance. An analytical model is developed to separate the bulk and
constriction resistances of spring and mating partner from the total contact
resistance. The results allow the identification of an optimal spring
configuration particularly for high-current contacts.


FAU Authors / FAU Editors

März, Martin Prof. Dr.
Lehrstuhl für Leistungselektronik
Rauh, Hubert
Lehrstuhl für Elektronische Bauelemente
Schriefer, Thomas
Lehrstuhl für Elektronische Bauelemente


External institutions with authors

Fraunhofer-Institut für Integrierte Systeme und Bauelementetechnologie (IISB)


How to cite

APA:
Schriefer, T., Hofmann, M., Rauh, H., Eckardt, B., & März, M. (2019). Parameter study on the electrical contact resistance of axially canted coil springs for high-current systems. In IEEE (Eds.), Proceedings of the 2018 29th International Conference on Electrical Contacts together with 64th IEEE Holm Conference on Electrical Contacts. Albuquerque, NM, US.

MLA:
Schriefer, Thomas, et al. "Parameter study on the electrical contact resistance of axially canted coil springs for high-current systems." Proceedings of the 2018 29th International Conference on Electrical Contacts together with 64th IEEE Holm Conference on Electrical Contacts, Albuquerque, NM Ed. IEEE, 2019.

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Last updated on 2019-09-07 at 09:49