Parameters of a Plunger Core Reactor with Parallel Winding Paths obtained from Voltage Driven Finite Element Analyses

Abstract

The steady-state operational parameters of a plunger core reactor with four parallel connected winding paths are calculated from voltage driven finite element analyses. Thereby, the 3D finite element model utilizes a direct circuit coupling to take into account for the applied sinusoidal voltage and the parallel windings paths. Consequently, the distribution of the coil currents is obtained with the full influence of the axial position of the plunger core. With regard to the mechanical design, the Lorentz forces acting on the windings and the Maxwell forces acting on the plunger core are additionally calculated in dependence of the plunger core air-gap.