WOLFRAM SYSTEMMODELER

HollowCylinderRadialFlux

Hollow cylinder with radial flux; fixed shape; linear or non-linear material characteristics

Wolfram Language

In[1]:=
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SystemModel["Modelica.Magnetic.FluxTubes.Shapes.FixedShape.HollowCylinderRadialFlux"]
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Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

Please refer to the enclosing sub-package FixedShape for a description of all elements of this package and to [Ro41] for derivation and/or coefficients of the equation for permeance G_m.

For hollow cylindric flux tubes with a radial magnetic flux, the flux density is a function of the radius. For that reason, the characteristic mu_r(B) is evaluated for the flux density at the flux tube's mean radius.

For those flux tube sections of a magnetic device that have a nonlinear material characteristic mu_r(B) and a large aspect ratio of outer to inner radius r_o/r_i, the section can be split up in a series connection of several hollow cylindric flux tubes with radial flux. This allows for more realistic modelling of the dependence of flux density on the radius compared to modelling with just one flux tube element.

Connectors (2)

port_p

Type: PositiveMagneticPort

Description: Positive magnetic port

port_n

Type: NegativeMagneticPort

Description: Negative magnetic port

Parameters (6)

nonLinearPermeability

Value: true

Type: Boolean

Description: = true, if non-linear rel. permeability is used, otherwise constant rel. permeability

mu_rConst

Value: 1

Type: RelativePermeability ()

Description: Constant relative permeability; used if nonLinearPermeability = false

material

Value: Material.SoftMagnetic.BaseData()

Type: BaseData

Description: Ferromagnetic material characteristics; used if nonLinearPermeability = true

l

Value: 0.01

Type: Length (m)

Description: Width (orthogonal to flux direction)

r_i

Value: 0.01

Type: Radius (m)

Description: Inner radius of hollow cylinder

r_o

Value: 0.02

Type: Radius (m)

Description: Outer radius of hollow cylinder

Components (1)

material

Type: BaseData

Description: Ferromagnetic material characteristics; used if nonLinearPermeability = true

Used in Components (2)

SimpleSolenoid

Simple network model of a lifting magnet with planar armature end face

AdvancedSolenoid

Advanced network model of a lifting magnet with planar armature end face, split magnetomotive force