Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines

Test examples of asynchronous induction machines

Information

This package contains test examples of asynchronous induction machines.

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

Package Content

Name Description
Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_DOL AIMC_DOL Test example: AsynchronousInductionMachineSquirrelCage direct-on-line
Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_YD AIMC_YD Test example: AsynchronousInductionMachineSquirrelCage Y-D
Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_Transformer AIMC_Transformer Test example: AsynchronousInductionMachineSquirrelCage transformer starting
Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMS_Start AIMS_Start Test example: AsynchronousInductionMachineSlipRing
Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_Inverter AIMC_Inverter Test example: AsynchronousInductionMachineSquirrelCage with inverter
Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_Conveyor AIMC_Conveyor Test example: AsynchronousInductionMachineSquirrelCage with inverter driving a conveyor
Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_InverterDrive AIMC_InverterDrive Test example: AsynchronousInductionMachineSquirrelCage inverter drive
Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_Steinmetz AIMC_Steinmetz AsynchronousInductionMachineSquirrelCage Steinmetz-connection
Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_withLosses AIMC_withLosses Test example: AsynchronousInductionMachineSquirrelCage with losses
Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_Initialize AIMC_Initialize Test example: Steady-State Initialization of AsynchronousInductionMachineSquirrelCage

Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_DOL Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_DOL

Test example: AsynchronousInductionMachineSquirrelCage direct-on-line

Information

At start time tStart three phase voltage is supplied to the asynchronous induction machine with squirrel cage; the machine starts from standstill, accelerating inertias against load torque quadratic dependent on speed, finally reaching nominal speed.

Simulate for 1.5 seconds and plot (versus time):

Default machine parameters are used.

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

Parameters

NameDescription
VNominalNominal RMS voltage per phase [V]
fNominalNominal frequency [Hz]
tStart1Start time [s]
TLoadNominal load torque [N.m]
wLoadNominal load speed [rad/s]
JLoadLoad's moment of inertia [kg.m2]
aimcData 

Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_YD Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_YD

Test example: AsynchronousInductionMachineSquirrelCage Y-D

Information

At start time tStart three phase voltage is supplied to the asynchronous induction machine with squirrel cage, first star-connected, then delta-connected; the machine starts from standstill, accelerating inertias against load torque quadratic dependent on speed, finally reaching nominal speed.

Simulate for 2.5 seconds and plot (versus time):

Default machine parameters are used.

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

Parameters

NameDescription
VNominalNominal RMS voltage per phase [V]
fNominalNominal frequency [Hz]
tStart1Start time [s]
tStart2Start time from Y to D [s]
TLoadNominal load torque [N.m]
wLoadNominal load speed [rad/s]
JLoadLoad's moment of inertia [kg.m2]
aimcData 

Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_Transformer Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_Transformer

Test example: AsynchronousInductionMachineSquirrelCage transformer starting

Information

At start time tStart1 three phase voltage is supplied to the asynchronous induction machine with squirrel cage via the transformer; the machine starts from standstill, accelerating inertias against load torque quadratic dependent on speed; at start time tStart2 the machine is fed directly from the voltage source, finally reaching nominal speed.

Simulate for 2.5 seconds and plot (versus time):

Default machine parameters are used.

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

Parameters

NameDescription
VNominalNominal RMS voltage per phase [V]
fNominalNominal frequency [Hz]
tStart1Start time [s]
tStart2Start time of bypass transformer [s]
TLoadNominal load torque [N.m]
wLoadNominal load speed [rad/s]
JLoadLoad's moment of inertia [kg.m2]
transformerData 
aimcData 

Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMS_Start Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMS_Start

Test example: AsynchronousInductionMachineSlipRing

Information

At start time tStart1 three phase voltage is supplied to the asynchronous induction machine with sliprings; the machine starts from standstill, accelerating inertias against load torque quadratic dependent on speed, using a starting resistance. At time tStart2 external rotor resistance is shortened, finally reaching nominal speed.

Simulate for 1.5 seconds and plot (versus time):

Default machine parameters are used.

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

Parameters

NameDescription
VNominalNominal RMS voltage per phase [V]
fNominalNominal frequency [Hz]
tStart1Start time [s]
RstartStarting resistance [Ohm]
tStart2Start time of shorting starting resistance [s]
TLoadNominal load torque [N.m]
wLoadNominal load speed [rad/s]
JLoadLoad's moment of inertia [kg.m2]
aimsData 

Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_Inverter Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_Inverter

Test example: AsynchronousInductionMachineSquirrelCage with inverter

Information

An ideal frequency inverter is modeled by using a VfController and a three-phase SignalVoltage. Frequency is raised by a ramp, causing the asynchronous 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):

Default machine parameters are used.

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

Parameters

NameDescription
VNominalNominal RMS voltage per phase [V]
fNominalNominal frequency [Hz]
fActual frequency [Hz]
tRampFrequency ramp [s]
TLoadNominal load torque [N.m]
tStepTime of load torque step [s]
JLoadLoad's moment of inertia [kg.m2]
aimcData 

Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_Conveyor Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_Conveyor

Test example: AsynchronousInductionMachineSquirrelCage with inverter driving a conveyor

Information

An ideal frequency inverter is modeled by using a VfController and a three-phase SignalVoltage. Frequency is driven by a load cycle of acceleration, constant speed, deceleration and standstill. The mechanical load is a constant torque like a conveyor (with regularization around zero speed).

Simulate for 20 seconds and plot (versus time):

Default machine parameters are used.

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

Parameters

NameDescription
VNominalNominal RMS voltage per phase [V]
fNominalNominal frequency [Hz]
wNominalNominal speed [rad/s]
TLoadNominal load torque [N.m]
JLoadLoad's moment of inertia [kg.m2]
rTransmission radius [m]
aimcData 

Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_InverterDrive Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_InverterDrive

Test example: AsynchronousInductionMachineSquirrelCage inverter drive

Information

This is a model of a complete inverter drive comprising:

Please note: Be patient, two switching devices cause many event iteratons which cost performance.

Note that due to the voltage drop the voltage at the machine can't reach the full voltage which means torque reduction.

Default machine parameters are adapted to nominal phase voltage 400 V and nominal phase current 25 A.

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

Parameters

NameDescription
VNominalNominal RMS voltage per phase [V]
fNominalNominal frequency [Hz]
RGridGrid choke resistance [Ohm]
LGridGrid choke inductance [H]
VDCTheoretical DC voltage [V]
CDCDC capacitor [F]
TLoadNominal load torque [N.m]
wLoadNominal load speed [rad/s]
JLoadLoad's moment of inertia [kg.m2]
aimcData 

Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_Steinmetz Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_Steinmetz

AsynchronousInductionMachineSquirrelCage Steinmetz-connection

Information

At start time tStart single phase voltage is supplied to the asynchronous induction machine with squirrel cage; the machine starts from standstill, accelerating inertias against load torque quadratic dependent on speed, finally reaching nominal speed.

Default machine parameters are used.

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

Parameters

NameDescription
VNominalNominal RMS voltage per phase [V]
fNominalNominal frequency [Hz]
tStart1Start time [s]
CrMotor's running capacitor [F]
CsMotor's (additional) starting capacitor [F]
wSwitchSpeed for switching off the starting capacitor [rad/s]
TLoadNominal load torque [N.m]
wLoadNominal load speed [rad/s]
JLoadLoad's moment of inertia [kg.m2]
aimcData 

Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_withLosses Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_withLosses

Test example: AsynchronousInductionMachineSquirrelCage with losses

Information

Current I_sim I_meas
Speed w_sim w_meas
Power factor pf_sim pf_meas
Efficiency eff_sim eff_meas

Machine parameters are taken from a standard 18.5 kW 400 V 50 Hz motor, simulation results are compared with measurements.

Nominal stator current 32.85 A
Power factor 0.898
Speed 1462.5 rpm
Electrical input 20,443.95 W
Stator copper losses 770.13 W
Stator core losses 410.00 W
Rotor copper losses 481.60 W
Stray load losses 102.22 W
Friction losses 180.00 W
Mechanical output 18,500.00 W
Efficiency 90.49 %
Nominal torque 120.79 Nm

Stator resistance per phase 0.56 Ω
Temperature coefficient copper
Reference temperature 20 °C
Operation temperature 90 °C
Stator leakage reactance at 50 Hz 1.52 Ω
Main field reactance at 50 Hz 66.40 Ω
Rotor leakage reactance at 50 Hz 2.31 Ω
Rotor resistance per phase 0.42 Ω
Temperature coefficient aluminium
Reference temperature 20 °C
Operation temperature 90 °C

See:
Anton Haumer, Christian Kral, Hansjörg Kapeller, Thomas Bäuml, Johannes V. Gragger
The AdvancedMachines Library: Loss Models for Electric Machines
Modelica 2009, 7th International Modelica Conference

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

Parameters

NameDescription
aimcData 

Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_Initialize Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_Initialize

Test example: Steady-State Initialization of AsynchronousInductionMachineSquirrelCage

Information

The asynchronous induction machine with squirrel cage is initialized in steady-state at no-load; at time tStart a load torque step is applied.

Simulate for 1.5 seconds and plot (versus time):

Default machine parameters are used.

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

Parameters

NameDescription
VNominalNominal RMS voltage per phase [V]
fNominalNominal frequency [Hz]
wSync[rad/s]
tStartStart time [s]
TLoadNominal load torque [N.m]
wLoadNominal load speed [rad/s]
JLoadLoad's moment of inertia [kg.m2]
aimcData 
Automatically generated Thu Dec 19 17:19:55 2019.