modelIMC_Transformer
Induction machine with squirrel cage starting with transformer
Extends from Modelica.Icons.Example (Icon for runnable examples).
Information
At start time tStart1 three-phase voltage is supplied to the 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):
- currentQuasiRMSSensor.I: stator current RMS
- aimc.wMechanical: motor's speed
- aimc.tauElectrical: motor's torque
Default machine parameters are used.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | m | 3 | Number of phases |
| SI.Voltage | VNominal | 100 | Nominal RMS voltage per phase |
| SI.Frequency | fNominal | aimcData.fsNominal | Nominal frequency |
| SI.Time | tStart1 | 0.1 | Start time |
| SI.Time | tStart2 | 2.0 | Start time of bypass transformer |
| SI.Torque | TLoad | 161.4 | Nominal load torque |
| SI.AngularVelocity | wLoad | 1440.45*2*Modelica.Constants.pi/60 | Nominal load speed |
| SI.Inertia | JLoad | 0.29 | Load's moment of inertia |
| Modelica.Electrical.Machines.Utilities.TransformerData | transformerData | Transformer data | |
| Modelica.Electrical.Machines.Utilities.ParameterRecords.IM_SquirrelCageData | aimcData | Induction machine data |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Magnetic.FundamentalWave.BasicMachines.InductionMachines.IM_SquirrelCage | aimc | ||
| Modelica.Electrical.Machines.Sensors.CurrentQuasiRMSSensor | currentQuasiRMSSensor | ||
| Modelica.Electrical.Polyphase.Sources.SineVoltage | sineVoltage | ||
| Modelica.Electrical.Polyphase.Basic.Star | star | ||
| Modelica.Electrical.Analog.Basic.Ground | ground | ||
| Modelica.Blocks.Sources.BooleanStep[m] | booleanStep1 | ||
| Modelica.Electrical.Polyphase.Ideal.IdealClosingSwitch | idealCloser | ||
| Modelica.Electrical.Machines.BasicMachines.Transformers.Yy.Yy00 | transformer | ||
| Modelica.Electrical.Analog.Basic.Ground | ground2 | ||
| Modelica.Blocks.Sources.BooleanStep[m] | booleanStep2 | ||
| Modelica.Electrical.Polyphase.Ideal.IdealCommutingSwitch | idealCommutingSwitch | ||
| Modelica.Mechanics.Rotational.Components.Inertia | loadInertia | ||
| Modelica.Mechanics.Rotational.Sources.QuadraticSpeedDependentTorque | quadraticLoadTorque | ||
| Modelica.Electrical.Machines.Utilities.TerminalBox | terminalBox |