WOLFRAM SYSTEMMODELER

IMS_Start

Starting of induction machine with slip rings

Diagram

Wolfram Language

In[1]:=
Click for copyable input
SystemModel["Modelica.Magnetic.QuasiStatic.FundamentalWave.Examples.BasicMachines.InductionMachines.IMS_Start"]
Out[1]:=

Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

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

Parameters (11)

m

Value: 3

Type: Integer

Description: Number of stator phases

mr

Value: 3

Type: Integer

Description: Number of rotor phases

VsNominal

Value: 100

Type: Voltage (V)

Description: Nominal RMS voltage per phase

fNominal

Value: 50

Type: Frequency (Hz)

Description: Nominal frequency

tOn

Value: 0.1

Type: Time (s)

Description: Start time of machine

RStart

Value: 0.16 / imsData.turnsRatio ^ 2

Type: Resistance (Ω)

Description: Starting resistance

tRheostat

Value: 1.0

Type: Time (s)

Description: Time of shortening the rheostat

T_Load

Value: 161.4

Type: Torque (N·m)

Description: Nominal load torque

w_Load

Value: Modelica.SIunits.Conversions.from_rpm(1440.45)

Type: AngularVelocity (rad/s)

Description: Nominal load speed

J_Load

Value: 0.29

Type: Inertia (kg·m²)

Description: Load inertia

imsData

Value:

Type: AIM_SlipRingData

Description: Machine data

Components (27)

ground

Type: Ground

Description:

star

Type: Star

Description:

sineVoltage

Type: SineVoltage

Description:

idealCloser

Type: IdealClosingSwitch

Description:

booleanStep

Type: BooleanStep[m]

Description:

currentQuasiRMSSensor

Type: CurrentQuasiRMSSensor

Description:

terminalBoxM

Type: TerminalBox

Description:

terminalBoxQS

Type: MultiTerminalBox

Description:

ims

Type: AIM_SlipRing

Description:

imsQS

Type: IM_SlipRing

Description:

rheostatM

Type: SwitchedRheostat

Description:

rheostatE

Type: SwitchedRheostat

Description:

loadInertia

Type: Inertia

Description:

loadInertiaE

Type: Inertia

Description:

quadraticLoadTorque

Type: QuadraticSpeedDependentTorque

Description:

quadraticLoadTorqueE

Type: QuadraticSpeedDependentTorque

Description:

imsData

Type: AIM_SlipRingData

Description: Machine data

voltageSourceQS

Type: VoltageSource

Description:

starQS

Type: Star

Description:

groundQS

Type: Ground

Description:

powerSensorQS

Type: PowerSensor

Description:

currentQuasiRMSSensorQS

Type: CurrentQuasiRMSSensor

Description:

idealCloserQS

Type: IdealClosingSwitch

Description:

booleanStepQS

Type: BooleanStep[m]

Description:

powerSensor

Type: PowerSensor

Description:

starMachineQS

Type: Star

Description:

groundMachineQS

Type: Ground

Description: