Flux source

A constant magnetic flux.

  • magnetic
  • Modelica Standard Library
  • 2 ports
  • 1 parameter
BlockFlux sourceKindfluxSourceLibraryMagnetic

Description

Forces a constant magnetic flux through itself, whatever the magnetic potential difference across it.

Example

Magnetic circuits A 100-turn winding drives flux through an air gap and a core, next to magnetic sources and a variable reluctance.

1 VGroundR 1 ΩWinding 100 turnsCore fluxAir gapCoreMagnetic groundGap mmfmmf 100 AGround (mmf)R_m signalVariable reluctanceFlux (variable)Ground (variable)50 ASignal mmfGround (signal)Permeance 1 µWb/AFlux (permeance)Ground (permeance)Flux 1 mWbGround (flux)Reluctance 10⁶mmf acrossGround (reluctance)
In Gradara, select a Flux source block and press F1, then choose Open example. It opens as a new model in My models, ready to run.

Also in this example:DC voltageStepGroundSine waveResistorReluctancePermeanceVariable reluctanceWindingMagnetic groundMMF sourceControlled MMF sourceFlux sensorMMF sensor

Ports

Conserving terminals 2

  • +port_pmagnetic

    Positive magnetic port. The flux Phi enters here.

  • −port_nmagnetic

    Negative magnetic port. The flux Phi leaves here.

Parameters

  • FluxPhi0.001 Wb

    Magnetic flux, in webers. Any real value.

Equations

Modelica
port_p.Φ = Phi
port_p.Φ + port_n.Φ = 0

Implementation

Modelica Standard Library 4.1.0Modelica.Magnetic.FluxTubes.Sources.ConstantMagneticFlux
MSL documentation

Assumptions and limitations

  • An ideal source. Do not connect it in series with a winding or another flux source.

See also

Select a block in Gradara and press F1 to open its page offline.