Air Gap
Purpose
Air gap in a magnetic core
Library
Magnetic / Components
Description
This component models an air gap in a magnetic core. It establishes a linear relationship between the magnetic flux \(\Phi\) and the magneto-motive force \(\mathcal{F}\)
where \(\mu_0 = 4 \pi \times 10^{-7}\,\mathrm{N}/\mathrm{A^2}\) is the magnetic constant, \(A\) is the cross-sectional area and \(l\) the length of the flux path.
Parameters
- Cross-sectional area
Effective cross-sectional area \(A\) of the air gap, in square meters \((\mathrm{m^2})\).
- Length of flux path
Effective length \(l\) of the air gap, in meters \((\mathrm{m})\).
- Initial MMF
Magneto-motive force at simulation start, in ampere-turns \((\mathrm{A})\).
Probe Signals
- MMF
The magneto-motive force measured from the marked to the unmarked terminal, in ampere-turns \((\mathrm{A})\).
- Flux
The magnetic flux flowing through the component, in webers \((\mathrm{Wb})\). A flux entering at the marked terminal is counted as positive.
- Field strength
The magnetic field strength \(H\) in the air gap, in amperes per meter \((\mathrm{A}/\mathrm{m})\).
- Flux density
The magnetic flux density \(B\) in the air gap, in teslas \((\mathrm{T})\).