Linear Permanent Magnet
Permanent Magnet with linear characteristic
Description
Equations
Variables
Connections
Parameters
Modelica Standard Library
The Linear Permanent Magnet component is a flux tube of fixed length and cross-sectional area that models a linear permanent magnet using material data.
The Hard Material parameter specifies the name of a record of class Hard Magnetic Material, which defines the magnetic material. A record of that class, with the corresponding name, must exist in the model, either at the same or higher level. Records of typical materials are in the palette Magnetic > Material > Hard.
The Use default material boolean parameter, when true, sets the name of the Hard Material parameter to HardMaterial1, which corresponds to the default name assigned to a record of the appropriate class. To use a different name, uncheck the box and enter the name for the parameter that appears.
Φ=Φp=−Φn=B⁢A
Vm=Vmp−Vmn=H⁢ℓ
B=μr⁢μ0⁢H−Br
Name
Units
Modelica ID
Vm
A
Magnetic potential difference between both ports
V_m
Φ
Wb
Magnetic flux from port_p to port_n
Phi
H
Am
Magnetic field intensity
B
T
Magnetic flux density
Br
Residual magnetic flux density of material
mat.B_r
μr
1
Relative permeability of material
mat.mu_r
portp
Positive magnetic port
port_p
portn
Negative magnetic port
port_n
Material
Default
Hard Material
[1]
Magnetic Material (hard)
mat
Use default material
true
True (checked) uses hardMaterial1 as the name for the Hard Material parameter
useDefaultMaterial
[1] hardMaterial1
Fixed Geometry
ℓ
0.1
m
Length in direction of flux
l
1·10−4
m2
Area of cross section
The component described in this topic is from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.
See Also
Magnetic Hysteresis
Magnetic Library
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