WOLFRAM SYSTEMMODELER

AIMS_Start_MultiPhase

Starting of multi phase asynchronous induction machine with slip rings

Diagram

Wolfram Language

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

Information

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

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 (9)

VsNominal

Value: 100

Type: Voltage (V)

Description: Nominal RMS voltage per phase

fNominal

Value: aimsData.fsNominal

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

Components (25)

terminalBoxM

Type: TerminalBox

terminalBox3

Type: TerminalBox

aimsM

Type: AIM_SlipRing

aims3

Type: AIM_SlipRing

rheostatM

Type: SwitchedRheostat

rheostat3

Type: SwitchedRheostat

loadInertiaM

Type: Inertia

loadInertia3

Type: Inertia

quadraticLoadTorqueM

Type: QuadraticSpeedDependentTorque

quadraticLoadTorque3

Type: QuadraticSpeedDependentTorque

aimsData

Type: AIM_SlipRingData

groundM

Type: Ground

starM

Type: Star

sineVoltageM

Type: SineVoltage

idealCloserM

Type: IdealClosingSwitch

booleanStepM

Type: BooleanStep[m]

currentRMSsensorM

Type: CurrentQuasiRMSSensor

ground3

Type: Ground

star3

Type: Star

sineVoltage3

Type: SineVoltage

idealCloser3

Type: IdealClosingSwitch

booleanStep3

Type: BooleanStep[m3]

currentRMSsensor3

Type: CurrentQuasiRMSSensor

gain

Type: Gain

feedback

Type: Feedback