IM Slip Ring
Induction machine with slip-ring rotor
Description
Connections
Parameters
Modelica Standard Library
The IM Slip Ring component models a three-phase induction machine with a slipring rotor. The resistance and stray inductance of the stator and rotor are modeled directly in the stator and rotor phases, with a space phasor transformation and a stator-fixed Air Gap model.
The following losses are modeled:
heat losses in the temperature dependent stator winding resistances
heat losses in the temperature dependent rotor winding resistances
friction losses
core losses (only eddy current losses, no hysteresis losses)
stray load losses
The turnsRatio parameter can be obtained from the following relationship at standstill with open rotor circuit at nominal voltage and nominal frequency, using the locked-rotor voltage VR, no-load stator current I0: turnsRatio⁢VR=Vs−Rs+j⁢Xsσ⁢I0.
Name
Modelica ID
flange
Shaft
plugrn
Negative rotor plug
plug_rn
plugrp
Positive rotor plug
plug_rp
plugsn
Negative stator plug
plug_sn
plugsp
Positive stator plug
plug_sp
support
Support at which the reaction torque is acting
thermalPort
General Parameters
Default
Units
fs,nom
50
Hz
Nominal frequency
fsNominal
Jr
0.29
kg⁢m2
Rotor moment of inertia
Js
Stator moment of inertia
p
2
Number of pole pairs (Integer)
Tr,oper
293.15
K
Operational temperature of rotor resistance
TrOperational
Ts,oper
Operational temperature of stator resistance
TsOperational
Vr,locked
[1]
V
Locked-rotor voltage per phase
VrLockedRotor
Vs,nom
100
Nominal stator voltage per phase
VsNominal
Turns Ratio
1
Stator turns / rotor turns (effective number of)
turnsRatio
Use Support Flange
false
True (checked) means enable stator support flange
useSupport
Use Thermal Port
True (checked) means thermal port is enabled
useThermalPort
Use Turns Ratio
true
True (checked) means use Turns Ratio parameter
useTurnsRatio
[1] 200⁢π⁢fs,nom⁢LmRs2+4⁢π2⁢fs,nom2⁢Lm2+Lsσ2
Brush Losses
0
Total voltage drop of brushes, if ibrush>Ilinear
Ilinear
0.01⁢Ianom
A
Current indicating linear voltage region of brush voltage drop
ILinear
See Brush for details of the brush loss model.
Friction Losses
Pref
W
Reference friction losses
PRef
ωref
ωnom
rads
Reference angular velocity
wRef
pω
Exponent of friction
power_w
See Friction for details of the friction loss model.
Rotor Core Losses
Reference rotor core losses
Vref
Reference RMS voltage
VRef
See Core for details of the core loss model.
Stator Core Losses
2⁢π⁢fs,nom
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
H
Main field inductance
Lrσ
Rotor stray inductance per phase
Lrsigma
Lr,0
Rotor zero sequence inductance w.r.t. rotor side
Lrzero
Lsσ
Stator stray inductance per phase
Lssigma
Ls,0
Stator zero sequence inductance
Lszero
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
[1] 1.5⁢1−0.9333π⁢fs,nom
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 Library
Electrical Machines
Induction Machines
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