Hysterisis Modeling by Inspection

By looking at the hysteresis loop of a core, its nonlinear magnetizing branch can be modeled by visual inspection. Three constants on the hysteresis loop reveal enough information about the core loss and non-linear inductance that power measurements and data-pairs can be avoided. An experimental hysteresis loop is taken from a CT and its model put together by visual inspection. The visual method presented is simulated and verified against an experimental hysterisis loop using SimPowerSystems as the circuit simulator.