Parameter calculation of solid wires in transformer windings

Resistance and capacitance impact the performance of magnetic components while it is difficult to calculate them accurately. An analytical model for parameter calculation of solid wire in transformer windings has been developed. The model calculates the current density distribution by considering the eddy current effect in solid wires through theory calculation. In this paper, a simulated model is evaluated by finite element method. It can be found that the current density distribution of solid wires obtained from analytical model is well aligned with that from FEM. Meanwhile, the resistance and inductance of each wire by the two parallel wires model and FEM are 0.1657 Ω and 0.1672 Ω, respectively. The relative error of resistance is 0.897%. The dynamic capacitance between two wires is 135.5 pF. The results are analyzed and found the model has huge potentiality for transformer design.