WOLFRAM SYSTEMMODELER

SMEE_Generator_MultiPhase

Electrical excited multi phase synchronous machine operating as generator

Diagram

Wolfram Language

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

Information

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

Electrical excited synchronous induction machine as generator

Two electrically excited synchronous generators are connected to grids and driven with constant speed. Since speed is slightly smaller than synchronous speed corresponding to mains frequency, rotor angle is very slowly increased. Two equivalent machines with different numbers of phases are compared and their equal behavior is demonstrated.

Simulate for 30 seconds and plot (versus rotorAngleM3.rotorDisplacementAngle):

  • 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 (16)

VsNominal

Value: 100

Type: Voltage (V)

Description: Nominal RMS voltage per phase

fsNominal

Value: smeeData.fsNominal

Type: Frequency (Hz)

Description: Nominal frequency

w

Value: Modelica.SIunits.Conversions.from_rpm(1499)

Type: AngularVelocity (rad/s)

Description: Nominal speed

Ie

Value: 19

Type: Current (A)

Description: Excitation current

Ie0

Value: 10

Type: Current (A)

Description: Initial excitation current

gamma0

Value: 0

Type: Angle (rad)

Description: Initial rotor displacement angle

p

Value: 2

Type: Integer

Description: Number of pole pairs

Rs

Value: 0.03

Type: Resistance (Ω)

Description: Warm stator resistance per phase

Lssigma

Value: 0.1 / (2 * Modelica.Constants.pi * fsNominal)

Type: Inductance (H)

Description: Stator stray inductance per phase

Lmd

Value: 1.5 / (2 * Modelica.Constants.pi * fsNominal)

Type: Inductance (H)

Description: Main field inductance in d-axis

Lmq

Value: 1.5 / (2 * Modelica.Constants.pi * fsNominal)

Type: Inductance (H)

Description: Main field inductance in q-axis

Lrsigmad

Value: 0.05 / (2 * Modelica.Constants.pi * fsNominal)

Type: Inductance (H)

Description: Damper stray inductance (equivalent three phase winding) d-axis

Lrsigmaq

Value: Lrsigmad

Type: Inductance (H)

Description: Damper stray inductance (equivalent three phase winding) q-axis

Rrd

Value: 0.04

Type: Resistance (Ω)

Description: Warm damper resistance (equivalent three phase winding) d-axis

Rrq

Value: Rrd

Type: Resistance (Ω)

Description: Warm damper resistance (equivalent three phase winding) q-axis

smeeData

Value:

Type: SynchronousMachineData

Components (26)

star3

Type: Star

ground3

Type: Ground

sineVoltage3

Type: SineVoltage

electricalPowerSensorM

Type: PowerSensor

electricalPowerSensor3

Type: ElectricalPowerSensor

terminalBoxM

Type: TerminalBox

terminalBox3

Type: TerminalBox

smeeM

Type: SM_ElectricalExcited

smee3

Type: SM_ElectricalExcited

groundRM

Type: Ground

groundR3

Type: Ground

rampCurrentM

Type: RampCurrent

rampCurrent3

Type: RampCurrent

rotorAngle3

Type: RotorDisplacementAngle

mechanicalPowerSensorM

Type: MechanicalPowerSensor

mechanicalPowerSensor3

Type: MechanicalPowerSensor

constantSpeedM

Type: ConstantSpeed

constantSpeed3

Type: ConstantSpeed

smeeData

Type: SynchronousMachineData

currentRMSsensorM

Type: CurrentQuasiRMSSensor

currentRMSsensor3

Type: CurrentQuasiRMSSensor

gain

Type: Gain

feedback

Type: Feedback

starM

Type: Star

groundM

Type: Ground

sineVoltageM

Type: SineVoltage