modelIMS_Start
Starting of induction machine with slip rings
Extends from Modelica.Icons.Example (Icon for runnable examples).
Information
At start time tOn three-phase voltage is supplied to the
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):
currentRMSsensorM|E.I: equivalent RMS stator currentaimsM/E.wMechanical: machine speedaimsM|E.tauElectrical: machine torque
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | m | 3 | Number of phases |
| SI.Voltage | VsNominal | 100 | Nominal RMS voltage per phase |
| SI.Frequency | fNominal | aimsData.fsNominal | Nominal frequency |
| SI.Time | tOn | 0.1 | Start time of machine |
| SI.Resistance | RStart | 0.16/aimsData.turnsRatio^2 | Starting resistance |
| SI.Time | tRheostat | 1.0 | Time of shortening the rheostat |
| SI.Torque | T_Load | 161.4 | Nominal load torque |
| SI.AngularVelocity | w_Load | Modelica.Units.Conversions.from_rpm(1440.45) | Nominal load speed |
| SI.Inertia | J_Load | 0.29 | Load inertia |
| Modelica.Electrical.Machines.Utilities.ParameterRecords.IM_SlipRingData | aimsData | Induction machine data |