Abstract
| This paper proposes a more accurate design of a single-phase AC current inductors with ferromagnetic core, for given values of inductance, of peak value of current and of magnetic flux density. The procedure combines an analytical computation design method (analytical model) with a numerical analysis by FEM (numerical model) using QuickField or FEMM software. The analytical model has two components, one considering the ideal coil (without iron losses) and another component considering real coil (with iron losses). The numerical model also has two components, one magnetic (AC Magnetic Problem) which determines the value of inductance and another component consisting of a thermal model (Steady-State Heat Transfer Problem) which determines the temperature distribution in the electromagnetic device. In the magnetic model was considered a constant permeability, but both software allow a nonlinear computation. The method presented in this paper has been indirectly experimentally validated. |
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