Modelica.Magnetic.QuasiStatic.FundamentalWave.Examples.BasicMachines.InductionMachines

Induction machine examples

Information

Extends from Modelica.Icons.ExamplesPackage (Icon for packages containing runnable examples).

Package Content

Name	Description
IMC_DOL	Induction machines with squirrel cage started directly on line (DOL)
IMC_Inverter	Test example: InductionMachineSquirrelCage with inverter
IMS_Start	Starting of induction machine with slip rings

Modelica.Magnetic.QuasiStatic.FundamentalWave.Examples.BasicMachines.InductionMachines.IMC_DOL

Induction machines with squirrel cage started directly on line (DOL)

Information

Direct on line (DOL) starting of an induction machine with squirrel cage

This example compares a time transient and a quasi static model of a multi phase induction machine. At start time tOn a transient and a quasi static multi phase voltage source are connected to an induction machine. The machine starts from standstill, accelerating inertias against load torque quadratic dependent on speed, finally reaching nominal speed.

Simulate for 1 second and plot (versus time):

currentRMSsensor.I|currentSensorQS.abs_i[1]: (equivalent) RMS stator current
imc|imcQS.wMechanical: machine speed
imc|imcQS.tauElectrical: machine torque

Extends from Modelica.Icons.Example (Icon for runnable examples).

Parameters

Name	Description
m	Number of phases
VsNominal	Nominal RMS voltage per phase [V]
fNominal	Nominal frequency [Hz]
tOn	Start time of machine [s]
T_Load	Nominal load torque [N.m]
w_Load	Nominal load speed [rad/s]
J_Load	Load inertia [kg.m2]
p	Number of pole pairs
imcData	Machine data

Modelica.Magnetic.QuasiStatic.FundamentalWave.Examples.BasicMachines.InductionMachines.IMC_Inverter

Test example: InductionMachineSquirrelCage with inverter

Information

Induction machine with squirrel cage fed by an ideal inverter

This example compares a time transient and a quasi static model of a multi phase induction machine. An ideal frequency inverter is modeled by using a VfController and a multi phase SignalVoltage. Frequency is raised by a ramp, causing the induction machine with squirrel cage to start, and accelerating inertias. At time tStep a load step is applied.

Simulate for 1.5 seconds and plot (versus time):




currentRMSsensor.I|currentSensorQS.abs_i[1]: (equivalent) RMS stator current
imc|imcQS.wMechanical: machine speed
imc|imcQS.tauElectrical: machine torque


Extends from Modelica.Icons.Example (Icon for runnable examples).
Parameters

Name Description
m Number of phases
VNominal Nominal RMS voltage per phase [V]
fNominal Nominal frequency [Hz]
f Actual frequency [Hz]
tRamp Frequency ramp [s]
TLoad Nominal load torque [N.m]
tStep Time of load torque step [s]
JLoad Load's moment of inertia [kg.m2]
imcData Machine data




Modelica.Magnetic.QuasiStatic.FundamentalWave.Examples.BasicMachines.InductionMachines.IMS_Start

Starting of induction machine with slip rings

Information

Starting of an induction machine with slipring rotor resistance starting


This example compares a time transient and a quasi static model of a multi phase induction machine.
At start time tOn a transient and a quasi static multi phase voltage source are connected to induction machine with sliprings. The machine starts from standstill, accelerating inertias against load torque quadratic dependent on speed,
using a starting resistance. At time tRheostat external rotor resistance is shortened, finally reaching nominal speed.


Simulate for 1.5 seconds and plot (versus time):



currentRMSsensor.I|currentSensorQS.abs_i[1]: (equivalent) RMS stator current
ims|imsQS.wMechanical: machine speed
ims|imsQS.tauElectrical: machine torque


Extends from Modelica.Icons.Example (Icon for runnable examples).
Parameters

Name Description
m Number of stator phases
mr Number of rotor phases
VsNominal Nominal RMS voltage per phase [V]
fNominal Nominal frequency [Hz]
tOn Start time of machine [s]
RStart Starting resistance [Ohm]
tRheostat Time of shortening the rheostat [s]
T_Load Nominal load torque [N.m]
w_Load Nominal load speed [rad/s]
J_Load Load inertia [kg.m2]
imsData Machine data


Automatically generated Tue Apr 05 09:36:36 2016.

Name	Description
m	Number of phases
VNominal	Nominal RMS voltage per phase [V]
fNominal	Nominal frequency [Hz]
f	Actual frequency [Hz]
tRamp	Frequency ramp [s]
TLoad	Nominal load torque [N.m]
tStep	Time of load torque step [s]
JLoad	Load's moment of inertia [kg.m2]
imcData	Machine data

Name	Description
m	Number of stator phases
mr	Number of rotor phases
VsNominal	Nominal RMS voltage per phase [V]
fNominal	Nominal frequency [Hz]
tOn	Start time of machine [s]
RStart	Starting resistance [Ohm]
tRheostat	Time of shortening the rheostat [s]
T_Load	Nominal load torque [N.m]
w_Load	Nominal load speed [rad/s]
J_Load	Load inertia [kg.m2]
imsData	Machine data