QuasiStatic IM Squirrel Cage
Induction machine with squirrel cage
Description
Connections
Parameters
Modelica Standard Library
The QuasiStatic IM Squirrel Cage component models a polyphase induction machine with a squirrel cage.
Resistances and stray inductances of the machine refer to an m phase stator.
The symmetry of the stator, rotor and supply are assumed.
The following losses are modeled:
heat losses in the temperature dependent stator winding resistances
heat losses in the temperature dependent cage resistances
friction losses
core losses (only eddy current losses, no hysteresis losses)
stray load losses
Name
Modelica ID
powerBalance
Power balance
flange
Shaft
support
Support at which the reaction torque is acting
plugsp
Positive plug of stator
plug_sp
plugsn
Negative plug of stator
plug_sn
thermalPort
Thermal port of induction machines
General Parameters
Default
Units
m
3
Number of stator phases
Jr
0.29
kg⁢m2
Rotor moment of inertia
Js
Stator moment of inertia
p
2
Number of pole pairs (Integer)
fs,nom
50
Hz
Nominal frequency
fsNominal
Ts,oper
293.15
K
Operational temperature of stator resistance
TsOperational
Tr,oper
Operational temperature of rotor resistance
TrOperational
Use Support Flange
false
True (checked) means enable stator support flange
useSupport
Use Thermal Port
True (checked) means thermal port is enabled
useThermalPort
Effective Stator Turns
1
Effective number of stator turns
effectiveStatorTurns
Lr,0
H
Lrzero
Ls,0
Lszero
Friction Losses
Pref
0
W
Reference friction losses
PRef
ωref
ωnom
rads
Reference angular velocity
wRef
pω
V
Exponent of friction
power_w
See Friction for details of the friction loss model.
Stator Core Losses
Reference rotor core losses
Vref
Reference RMS voltage
VRef
2⁢π⁢fs,nom
See Core for details of the core loss model.
Stray Load Losses
Iref
Ianom
Reference RMS current
IRef
Exponent of stray load loss
See Stray Load for details of the stray load loss model.
Nominal Resistances And Inductances Parameters
αr
1K
Temperature coefficient of rotor resistance at 20 degC
alpha20r
αs
Temperature coefficient of stator resistance at 20 degC
alpha20s
Lm
Main field inductance
Lrσ
Rotor stray inductance per phase
Lrsigma
Lsσ
Stator stray inductance per phase
Lssigma
Rr
0.04
Ω
Warm rotor resistance per phase
Rs
0.03
Warm stator resistance per phase
Tr,ref
Reference temperature of rotor resistance
TrRef
Ts,ref
Reference temperature of stator resistance
TsRef
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 Quasistatic Fundamental Wave Basic Machine Induction Machines
Magnetic Quasistatic Fundamental Wave Basic Machines
Magnetic Quasistatic Fundamental Wave Overview
Magnetics Library
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