Simulation and experimental study of three-phase transformer with twisted tape flat and spatial magnetic cores

This paper presents results of simulation and experimental study of the magnetization process of three-phase transformer with twisted tape flat and spatial magnetic cores. The concepts of “ring” and the “core” of the transformer with twisted ribbon planar and spatial magnetic cores were introduced. A mathematical model of three-phase transformer with twisted tape flat and spatial magnetic cores was developed and used for simulations of the magnetization process of the transformer and experimental confirmation of the simulation results. From the result of study we obtained relations of phase current change, the phase voltage, phase magnetic flux, magnetic flux in the ring, EMF in the ring of the magnetic circuit, harmonic structure of phase voltages and voltage in the ring of magnetic circuit. The results can be used to determine the parameters of the equivalent circuit of three-phase transformer with twist twisted tape flat and spatial magnetic cores with a different character of the load.