Numerical model of the 10 kVA superconducting transformer

Abstract

The paper proposes the circuit model of 10 kVA superconducting transformer implemented in PSpice. The model of second generation superconducting tape allow for the simulation of smooth transition of the yttrium superconducting layer into resistive state. Dependence between the electric field intensity and the current density is described by Rhyner's power-law. A modified Jiles-Atherton equation has been used to describe the nonlinear magnetic core of the transformer. The current and voltage waveforms in the idle state, in the load condition and in the short-circuit of the superconducting transformer have been obtained. The waveforms have been compared with the results of the measurements to verify the computer model.