WOLFRAM SYSTEMMODELER

AIMS_Start

Starting of asynchronous induction machine with slip rings

Diagram

Wolfram Language

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Click for copyable input
SystemModel["Modelica.Magnetic.FundamentalWave.Examples.BasicMachines.AIMS_Start"]
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Information

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

Starting of an asynchronous induction machine with slipring rotor resistance starting

At start time tOn three phase voltage is supplied to the asynchronous 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 current
  • aimsM/E.wMechanical: machine speed
  • aimsM|E.tauElectrical: machine torque

Parameters (9)

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 / aimsData.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

aimsData

Value:

Type: AIM_SlipRingData

Description:

Components (18)

ground

Type: Ground

Description:

star

Type: Star

Description:

sineVoltage

Type: SineVoltage

Description:

idealCloser

Type: IdealClosingSwitch

Description:

booleanStep

Type: BooleanStep[m]

Description:

currentRMSsensorM

Type: CurrentQuasiRMSSensor

Description:

currentRMSsensorE

Type: CurrentQuasiRMSSensor

Description:

terminalBoxM

Type: TerminalBox

Description:

terminalBoxE

Type: TerminalBox

Description:

aimsM

Type: AIM_SlipRing

Description:

aimsE

Type: AIM_SlipRing

Description:

rheostatM

Type: SwitchedRheostat

Description:

rheostatE

Type: SwitchedRheostat

Description:

loadInertiaM

Type: Inertia

Description:

loadInertiaE

Type: Inertia

Description:

quadraticLoadTorqueM

Type: QuadraticSpeedDependentTorque

Description:

quadraticLoadTorqueE

Type: QuadraticSpeedDependentTorque

Description:

aimsData

Type: AIM_SlipRingData

Description: