The study of transient current distributions in the conductor of a reactor with laminated core

In this paper, a finite-difference method is used for solving transient electromagnetic field distributions in the conductor of a reactor with laminated core of nonlinear magnetic property. In the analysis, the reactor is divided into iron, air, and copper regions. With the aid of B-μ table and material indexes, both the time-dependent current distribution in the conductor and the vector potential function are obtained. The transient response of the inductance is exhibited in this paper and comparison with steady-state value is made.