Comparison of the Active Parts of Single-Phase Transformers with Twisted and Laminated Magnetic Circuits

A numerical comparative analysis of indicators of the technical level of planar rod, armored and spatial armored electromagnetic systems with twisted and laminated magnetic circuits was carried out. To determine the advantages and justify the choice of the design of a single-phase transformer, a universal method of objective functions for optimizing electromagnetic systems with dimensionless indicators of the technical level and relative controlled variables was used. When determining the objective functions based on the condition of electromagnetic equivalence, the materials used, the amplitudes of the magnetic field in the rods and current density of the windings, the average values of yokes, as well as the design and cooling methods of electromagnetic static devices were taken to be the same. It was determined that twisted electromagnetic systems are the best according to the criterion of minimum mass of active materials in comparison with laminated ones.