WOLFRAM SYSTEMMODELER

AIMC_DOL_MultiPhase

Direct on line start of multi phase asynchronous induction machine with squirrel cage

Diagram

Wolfram Language

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

Information

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

At start time tStart voltages are supplied to the multi phase asynchronous induction machines with squirrel cage. The machines starts from standstill, accelerating inertias against load torque quadratic dependent on speed, finally reaching nominal speed. Two equivalent machines with different numbers of phases are compared and their equal behavior is demonstrated.

Simulate for 1.5 seconds and plot (versus time):

  • aimcM|M3.tauElectrical: machine torque
  • aimsM/M3.wMechanical: machine speed
  • feedback.y: zero since difference of three phase current phasor and scaled multi phase current phasor are equal

Parameters (8)

VsNominal

Value: 100

Type: Voltage (V)

Description: Nominal RMS voltage per phase

fNominal

Value: aimcData.fsNominal

Type: Frequency (Hz)

Description: Nominal frequency

tOn

Value: 0.1

Type: Time (s)

Description: Start time of machine

T_Load

Value: 161.4

Type: Torque (N·m)

Description: Nominal load torque

w_Load

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

Type: AngularVelocity (rad/s)

Description: Nominal load speed

J_Load

Value: 0.29

Type: Inertia (kg·m²)

Description: Load inertia

p

Value: 2

Type: Integer

Description: Number of pole pairs

aimcData

Value:

Type: AIM_SquirrelCageData

Components (23)

groundM

Type: Ground

starM

Type: Star

sineVoltageM

Type: SineVoltage

idealCloserM

Type: IdealClosingSwitch

booleanStepM

Type: BooleanStep[m]

currentRMSsensorM

Type: CurrentQuasiRMSSensor

terminalBoxM

Type: TerminalBox

aimcM

Type: AIM_SquirrelCage

loadInertiaM

Type: Inertia

quadraticLoadTorqueM

Type: QuadraticSpeedDependentTorque

aimcData

Type: AIM_SquirrelCageData

ground3

Type: Ground

star3

Type: Star

sineVoltage3

Type: SineVoltage

idealCloser3

Type: IdealClosingSwitch

booleanStep3

Type: BooleanStep[m3]

currentRMSsensor3

Type: CurrentQuasiRMSSensor

terminalBox3

Type: TerminalBox

aimc3

Type: AIM_SquirrelCage

loadInertia3

Type: Inertia

quadraticLoadTorque3

Type: QuadraticSpeedDependentTorque

gain

Type: Gain

feedback

Type: Feedback