DC Permanent Magnet
Permanent magnet DC machine
Description
Variables
Connections
Parameters
Modelica Standard Library
The quasistationary DC Permanent Magnet component models a DC Machine with permanent magnets. This model is fully compatible with the regular DC Permanent Magnet model; the only difference is that electrical transients are neglected.
Name
Units
Modelica ID
phiMechanical
rad
Mechanical angle of rotor against stator
wMechanical
rads
Mechanical angular velocity of rotor against stator
tauElectrical
N⁢m
Electromagnetic torque
tauShaft
Shaft torque
inertiaRotor
inertiaStator
fixed
friction
va
V
Armature voltage
ia
A
Armature current
ra
la
brush
core
strayLoad
thermalAmbient
airGapDC
eGround
ie
[1] flange⋅φ−internalSupport⋅φ
[2] inertiaRotor⋅flangea⋅τ
flange
Shaft
pinan
Negative armature pin
pin_an
pinap
Positive armature pin
pin_ap
support
Support at which the reaction torque is acting
thermalPort
Optional thermal port
General Parameters
Default
Jr
kg⁢m2
Rotor moment of inertia
Js
Stator moment of inertia
Ta,oper
K
Operational armature temperature
TaOperational
Use Support Flange
false
True (checked) means enable stator support
useSupport
Use Thermal Port
True (checked) means thermal port is enabled
useThermalPort
Brush Losses
0
Total voltage drop of brushes, if ibrush>Ilinear
Ilinear
0.01⁢Ianom
Current indicating linear voltage region of brush voltage drop
ILinear
See Brush for details of the brush loss model.
Core Losses
Pref
W
Reference rotor core losses
PRef
Vref
Vnom
Reference RMS voltage
VRef
ωref
ωnom
Reference angular velocity
wRef
See Core for details of the core loss model.
Friction Losses
Reference friction losses
pω
2
Exponent of friction
power_w
See Friction for details of the friction loss model.
Stray Load Losses
Iref
Ianom
Reference RMS current
IRef
1
Exponent of stray load loss
See Stray Load for details of the stray load loss model.
Nominal Parameters Parameters
Ia,nom
Nominal armature current
IaNominal
Nominal rotational speed
wNominal
Ta,nom
Nominal armature temperature
TaNominal
Va,nom
Nominal armature voltage
VaNominal
Nominal Resistances And Inductances Parameters
αa
1K
Temperature coefficient of armature resistance
alpha20a
La
H
Armature inductance
Ra
Ω
Warm armature resistance
Ta,ref
Reference temperature of armature resistance
TaRef
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
Electrical
Electrical Machines Overview
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