WOLFRAM SYSTEM MODELER

IMC_YD

Induction machine with squirrel cage starting Y-D

Diagram

Wolfram Language

In[1]:=
SystemModel["Modelica.Magnetic.FundamentalWave.Examples.BasicMachines.InductionMachines.IMC_YD"]
Out[1]:=

Information

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

At start time tStart three-phase voltage is supplied to the 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):

  • currentQuasiRMSSensor.I: stator current RMS
  • aimc.wMechanical: motor's speed
  • aimc.tauElectrical: motor's torque

Default machine parameters are used.

Parameters (8)

VNominal

Value: 100

Type: Voltage (V)

Description: Nominal RMS voltage per phase

fNominal

Value: aimcData.fsNominal

Type: Frequency (Hz)

Description: Nominal frequency

tStart1

Value: 0.1

Type: Time (s)

Description: Start time

tStart2

Value: 2.0

Type: Time (s)

Description: Start time from Y to D

TLoad

Value: 161.4

Type: Torque (N⋅m)

Description: Nominal load torque

wLoad

Value: 1440.45 * 2 * Modelica.Constants.pi / 60

Type: AngularVelocity (rad/s)

Description: Nominal load speed

JLoad

Value: 0.29

Type: Inertia (kg⋅m²)

Description: Load's moment of inertia

aimcData

Value:

Type: IM_SquirrelCageData

Description: Induction machine data

Components (12)

aimc

Type: IM_SquirrelCage

Description: Induction machine with squirrel cage

currentQuasiRMSSensor

Type: CurrentQuasiRMSSensor

Description: Length of space phasor -> RMS current

sineVoltage

Type: SineVoltage

Description: Polyphase sine voltage source

star

Type: Star

Description: Star-connection

ground

Type: Ground

Description: Ground node

booleanStep

Type: BooleanStep[m]

Description: Generate step signal of type Boolean

idealCloser

Type: IdealClosingSwitch

Description: Polyphase ideal closer

switchYD

Type: SwitchYD

Description: Y-D-switch

booleanStepYD

Type: BooleanStep[m]

Description: Generate step signal of type Boolean

loadInertia

Type: Inertia

Description: 1D-rotational component with inertia

quadraticLoadTorque

Type: QuadraticSpeedDependentTorque

Description: Quadratic dependency of torque versus speed

aimcData

Type: IM_SquirrelCageData

Description: Induction machine data