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E. Schmidt, P. Hamberger:
"Application of Field-Circuit Coupled Finite Element Analyses for the Operational Behaviour of a Plunger Core Reactor";
Talk: The Applied Computational Electromagnetics Society ACES, Niagara Falls, Canada; 2008-03-30 - 2008-04-04; in: "The 24th Annual Review of Progress in Applied Computational Electromagnetics", (2008), 782 - 787.

The steady-state and transient operational behaviour of a plunger core reactor with four parallel connected winding paths is calculated from voltage driven field-circuit coupled finite element analyses. The 3D finite element model utilizes a strong circuit coupling to take into account the parallel windings paths and the applied voltage of the mains.
Consequently, the distribution of the coil currents within the parallel connected winding paths is obtained with the full influence of the axial position of the plunger core for both steady-state as well as transient operational conditions. In case of steady-state conditions, the coil currents obtained from the numerical analyses are compared with those obtained from measurements. With regard to the mechanical design, the Lorentz forces acting on the coil windings and the Maxwell forces acting on the plunger core are calculated in dependence of the plunger core air-gap.