SMEE_Generator_MultiPhaseElectrical excited multi phase synchronous machine operating as generator 
This information is part of the Modelica Standard Library maintained by the Modelica Association.
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
):
aimcMM3.tauElectrical
: machine torqueaimsMM3.wMechanical
: machine speedfeedback.y
: zero since difference of three phase current phasor and scaled multi phase current phasor are equalVsNominal 
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 daxis 
Lmq 
Value: 1.5 / (2 * Modelica.Constants.pi * fsNominal) Type: Inductance (H) Description: Main field inductance in qaxis 
Lrsigmad 
Value: 0.05 / (2 * Modelica.Constants.pi * fsNominal) Type: Inductance (H) Description: Damper stray inductance (equivalent three phase winding) daxis 
Lrsigmaq 
Value: Lrsigmad Type: Inductance (H) Description: Damper stray inductance (equivalent three phase winding) qaxis 
Rrd 
Value: 0.04 Type: Resistance (Ω) Description: Warm damper resistance (equivalent three phase winding) daxis 
Rrq 
Value: Rrd Type: Resistance (Ω) Description: Warm damper resistance (equivalent three phase winding) qaxis 
smeeData 
Value: Type: SynchronousMachineData 
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 