Field-based finite-element circuit models for magnetic components with hysteresis

A methodology is described for the development of field-based, geometry-dependent circuit models which enable coupled field/circuit simulation of circuits containing magnetic components with hysteresis. Saber templates are developed for the field equivalent subcircuits representing the dynamic electromagnetic fields in the magnetic (ferrite), conductive (copper), and insulating elements, as well as for an interface network. Hysteresis models are included in the finite-element formulation of the ferrite model. Transient electromagnetic and circuit phenomena within and outside the magnetic components can be simulated simultaneously for a wide range of circuit topologies and excitation waveforms, using existing circuit simulators.