WOLFRAM SYSTEMMODELER

AIMS_Start_MultiPhase

Starting of multi phase asynchronous induction machine with slip rings

Diagram

Wolfram Language

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SystemModel["Modelica.Magnetic.FundamentalWave.Examples.BasicMachines.AIMS_Start_MultiPhase"]
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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 voltages are supplied to the asynchronous induction machines with sliprings. The two machine start 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. 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 (11)

m

Value: 5

Type: Integer

Description: Number of stator phases

mr

Value: 5

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 / 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 (25)

terminalBoxM

Type: TerminalBox

Description:

terminalBox3

Type: TerminalBox

Description:

aimsM

Type: AIM_SlipRing

Description:

aims3

Type: AIM_SlipRing

Description:

rheostatM

Type: SwitchedRheostat

Description:

rheostat3

Type: SwitchedRheostat

Description:

loadInertiaM

Type: Inertia

Description:

loadInertia3

Type: Inertia

Description:

quadraticLoadTorqueM

Type: QuadraticSpeedDependentTorque

Description:

quadraticLoadTorque3

Type: QuadraticSpeedDependentTorque

Description:

aimsData

Type: AIM_SlipRingData

Description:

groundM

Type: Ground

Description:

starM

Type: Star

Description:

sineVoltageM

Type: SineVoltage

Description:

idealCloserM

Type: IdealClosingSwitch

Description:

booleanStepM

Type: BooleanStep[m]

Description:

currentRMSsensorM

Type: CurrentQuasiRMSSensor

Description:

ground3

Type: Ground

Description:

star3

Type: Star

Description:

sineVoltage3

Type: SineVoltage

Description:

idealCloser3

Type: IdealClosingSwitch

Description:

booleanStep3

Type: BooleanStep[m3]

Description:

currentRMSsensor3

Type: CurrentQuasiRMSSensor

Description:

gain

Type: Gain

Description:

feedback

Type: Feedback

Description: