WOLFRAM SYSTEM MODELER

IMC_Conveyor

Test example: InductionMachineSquirrelCage with inverter driving a conveyor

Diagram

Wolfram Language

In[1]:=
SystemModel["Modelica.Electrical.Machines.Examples.InductionMachines.IMC_Conveyor"]
Out[1]:=

Information

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

An ideal frequency inverter is modeled by using a VfController and a three-phase SignalVoltage. Frequency is driven by a load cycle of acceleration, constant speed, deceleration and standstill. The mechanical load is a constant torque like a conveyor (with regularization around zero speed).

Simulate for 20 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 (7)

VNominal

Value: 100

Type: Voltage (V)

Description: Nominal RMS voltage per phase

fNominal

Value: aimcData.fsNominal

Type: Frequency (Hz)

Description: Nominal frequency

wNominal

Value: 2 * pi * fNominal / aimcData.p

Type: AngularVelocity (rad/s)

Description: Nominal speed

TLoad

Value: 161.4

Type: Torque (N⋅m)

Description: Nominal load torque

JLoad

Value: 0.29

Type: Inertia (kg⋅m²)

Description: Load's moment of inertia

r

Value: 0.05

Type: Length (m)

Description: Transmission radius

aimcData

Value:

Type: IM_SquirrelCageData

Description: Induction machine data

Components (13)

aimc

Type: IM_SquirrelCage

Description: Induction machine with squirrel cage rotor

currentQuasiRMSSensor

Type: CurrentQuasiRMSSensor

Description: Length of space phasor -> RMS current

dutyCycle

Type: CombiTimeTable

Description: Table look-up with respect to time and linear/periodic extrapolation methods (data from matrix/file)

vfController

Type: VfController

Description: Voltage-Frequency-Controller

signalVoltage

Type: SignalVoltage

Description: Polyphase signal voltage source

star

Type: Star

Description: Star-connection

ground

Type: Ground

Description: Ground node

terminalBox

Type: TerminalBox

Description: Terminal box Y/D-connection

aimcData

Type: IM_SquirrelCageData

Description: Induction machine data

gain

Type: Gain

Description: Output the product of a gain value with the input signal

idealGearR2T

Type: IdealGearR2T

Description: Gearbox transforming rotational into translational motion

mass

Type: Mass

Description: Sliding mass with inertia

signForce

Type: SignForce

Description: Constant force changing sign with speed