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E. Schmidt, A. Degwerth:
"Design Studies on Low Voltage Contactors by using Transient Finite Element with Circuit Coupling";
Vortrag: IEEE Canadian Conference on Electrical and Computer Engineering (CCECE), Saskatoon, SK, Canada; 01.05.2005 - 04.05.2005; in: "Proceedings of the IEEE Canadian Conference on Electrical and Computer Engineering (CCECE)", (2005), ISBN: 0-7803-8886-0; 4 S.

The behaviour of a low voltage contactor is analyzed with nonlinear
transient finite element analyses. For a simulation as close as possible
to normal operational conditions, a voltage driven model is concerned
additionally to a current excited model. A strong circuit coupling takes
into account for the eddy currents in the copper shading rings. Thereby,
different arrangements of the shading rings are analyzed in detail. A
comparison of the steady state current characteristics obtained from the
numerical calculations and from measurements shows a very good agreement.

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