IMC_Transformer

Induction machine with squirrel cage starting with transformer

Diagram

Information

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

At start time tStart1 three-phase voltage is supplied to the induction machine with squirrel cage via the transformer; the machine starts from standstill, accelerating inertias against load torque quadratic dependent on speed; at start time tStart2 the machine is fed directly from the voltage source, 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 (9)

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 of bypass transformer

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

transformerData

Value:

Type: TransformerData

Description: Transformer data

aimcData

Value:

Type: IM_SquirrelCageData

Description: Induction machine data

Components (16)

aimc

Type: IM_SquirrelCage

currentQuasiRMSSensor

Type: CurrentQuasiRMSSensor

sineVoltage

Type: SineVoltage

star

Type: Star

ground

Type: Ground

booleanStep1

Type: BooleanStep[m]

idealCloser

Type: IdealClosingSwitch

transformer

Type: Yy00

ground2

Type: Ground

transformerData

Type: TransformerData

Description: Transformer data

booleanStep2

Type: BooleanStep[m]

idealCommutingSwitch

Type: IdealCommutingSwitch

loadInertia

Type: Inertia

quadraticLoadTorque

Type: QuadraticSpeedDependentTorque

terminalBox

Type: TerminalBox

aimcData

Type: IM_SquirrelCageData

Description: Induction machine data