WOLFRAM SYSTEM MODELER

IMS_Characteristics

Characteristic curves of induction machine with slip rings

Diagram

Wolfram Language

In[1]:=
SystemModel["Modelica.Magnetic.QuasiStatic.FundamentalWave.Examples.BasicMachines.InductionMachines.IMS_Characteristics"]
Out[1]:=

Information

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

This examples allows the investigation of characteristic curves of quasi-static polyphase induction machines with slip ring rotor as a function of rotor speed.

Simulate for 1 second and plot (versus imsQS.wMechanical or perUnitSpeed):

  • currentSensorQS.abs_i[1]: (equivalent) RMS stator current
  • imsQS.tauElectrical: machine torque
  • imscQS.powerBalance.powerStator: stator power
  • imsQS.powerBalance.powerMechanical: mechanical power

Default machine parameters are used. The rotor resistance may be varied to demonstrate the impact on the characteristic curves

Parameters (8)

m

Value: 3

Type: Integer

Description: Number of stator phases

mr

Value: 3

Type: Integer

Description: Number of rotor phases

VsNominal

Value: 100

Type: Voltage (V)

Description: Nominal RMS voltage per phase

fNominal

Value: imsData.fsNominal

Type: Frequency (Hz)

Description: Nominal frequency

Rr

Value: 0.16 / imsData.turnsRatio ^ 2

Type: Resistance (Ω)

Description: Starting resistance

p

Value: imsData.p

Type: Integer

Description: Number of pole pairs

w_Load

Value: Modelica.Units.Conversions.from_rpm(1440.45)

Type: AngularVelocity (rad/s)

Description: Nominal load speed

imsData

Value:

Type: IM_SlipRingData

Description: Induction machine data

Outputs (1)

Iqs

Default Value: iSensorQS.I

Type: Current (A)

Description: QS RMS current

Components (15)

terminalBoxQS

Type: MultiTerminalBox

Description: Terminal box Y/D-connection

imsQS

Type: IM_SlipRing

Description: Induction machine with slip ring rotor

imsData

Type: IM_SlipRingData

Description: Induction machine data

vSourceQS

Type: VoltageSource

Description: Constant polyphase AC voltage

starQS

Type: Star

Description: Star connection

groundQS

Type: Ground

Description: Electrical ground

pSensorQS

Type: PowerSensor

Description: Power sensor

iSensorQS

Type: CurrentQuasiRMSSensor

Description: Continuous quasi current RMS sensor for polyphase system

starMachineQS

Type: Star

Description: Star connection

groundMachineQS

Type: Ground

Description: Electrical ground

speed

Type: Speed

Description: Forced movement of a flange according to a reference angular velocity signal

ramp

Type: Ramp

Description: Generate ramp signal

groundRotorQS

Type: Ground

Description: Electrical ground

starRotorQS

Type: Star

Description: Star connection

resistor

Type: Resistor

Description: Polyphase linear resistor