modelIMS_Start
Starting of induction machine with slip rings
Extends from Modelica.Icons.Example (Icon for runnable examples).
Information
Description
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.
Plot the following variable(s)
currentSensor.IandcurrentSensorQS.I: (quasi) RMS stator current of transient and quasi static machineims.tauElectricalandimsQS.tauElectrical: torque of transient and quasi static machineims.wMechanicalandimsQS.wMechanical: speed of transient and quasi static machine
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | m | 3 | Number of stator phases |
| Integer | mr | 3 | Number of rotor phases |
| Modelica.Units.SI.Voltage | VsNominal | 100 | Nominal RMS voltage per phase |
| Modelica.Units.SI.Current | IsNominal | 100 | Nominal RMS current per phase |
| Modelica.Units.SI.Frequency | fsNominal | ims.fsNominal | Nominal frequency |
| Modelica.Units.SI.Time | tOn | 0.1 | Start time of machine |
| Modelica.Units.SI.Resistance | RStart | 0.16/imsData.turnsRatio^2 | Starting resistance |
| Modelica.Units.SI.Time | tRheostat | 1.0 | Time of shortening the rheostat |
| Modelica.Units.SI.Torque | tauLoad | 161.4 | Nominal load torque |
| Modelica.Units.SI.AngularVelocity | w_Load | Modelica.Units.Conversions.from_rpm(1440.45) | Nominal load speed |
| Modelica.Units.SI.Inertia | JLoad | 0.29 | Load inertia |
| ParameterRecords.IMS | imsData | Induction machine parameters |