Study of current transformers magnetic field by method final elements using the femm software complex

Abstract

. Using this program, we studied the distribution of the magnetic field of the current transformer when the magnetic system is not completely filled with turns of the secondary winding and with a different arrangement of the return wire of the multi-turn primary winding relative to the secondary winding for a current transformer with a toroidal magnetic system. For a transformer with a rectangular magnetic system, a magnetic field is simulated for one and two secondary coils. The diagrams of the magnetic field vectors are constructed for different sections of the transformer magnetic system.