Hysteretic Core
Purpose
Magnetic core element with static hysteresis
Library
Magnetic
Description
This component models a segment of a magnetic core. It establishes a non-linear
relationship between the magnetic field strength and the flux density
. The
hysteresis characteristics is based on a Preisach model with a Lorentzian distribution
function.
The figure below shows a fully excited major hysteresis curve with some minor
reversal loops. The major curve is defined by the saturation point (,
), the
coercitive field strength
, the remanence flux density
and the saturated
permeability
.
Parameters
- Cross-sectional area
- Cross-sectional area
of the flux path, in
.
- Length of flux path
- Length
of the flux path, in m.
- Coercitive field strength
- Coercitive field strength
for
, in A/m.
- Remanence flux density
- Remanence flux density
for
, in teslas (T).
- Saturation field strength
- Field strength
at the saturation point, in A/m.
- Saturation flux density
- Flux density
at the saturation point, in teslas (T).
- Saturated rel. permeability
- Relative permeability
of the core material for
.
Probe Signals
- MMF
- The magneto-motive force measured from the marked to the unmarked terminal, in ampere-turns (A).
- Flux
- The magnetic flux flowing through the component, in webers (Wb). A flux entering at the marked terminal is counted as positive.
- Field strength
- The magnetic field strength
in the core element, in A/m.
- Flux density
- The magnetic flux density
in the core element, in teslas (T).
- Loss energy
- The energy dissipated in the core, in joules (J). An energy pulse is generated each time a minor or major hysteresis loop is closed.