WOLFRAM SYSTEM MODELER
SMEE_GeneratorTest example: ElectricalExcitedSynchronousMachine as Generator |
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Diagram
Wolfram Language
In[1]:=
SystemModel["Modelica.Electrical.Machines.Examples.SynchronousMachines.SMEE_Generator"]
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Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
An electrically excited synchronous generator is connected to the grid and driven with constant speed. Since speed is slightly smaller than synchronous speed corresponding to mains frequency, rotor angle is very slowly increased. This allows to see several characteristics dependent on rotor angle.
Simulate for 30 seconds and plot (versus rotorDisplacementAngle.rotorDisplacementAngle):
- smee.tauElectrical
- currentQuasiRMSSensor.I
- electricalPowerSensor.P
- electricalPowerSensor.Q
- mechanicalPowerSensor.P
Default machine parameters are used.
Parameters (7)
| VNominal |
Value: 100 Type: Voltage (V) Description: Nominal RMS voltage per phase |
|---|---|
| fNominal |
Value: 50 Type: Frequency (Hz) Description: Nominal frequency |
| wActual |
Value: 1499 * 2 * Modelica.Constants.pi / 60 Type: AngularVelocity (rad/s) Description: Actual 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 |
| smeeData |
Value: Type: SynchronousMachineData Description: Synchronous machine data |
Components (13)
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smee |
Type: SM_ElectricalExcited Description: Electrical excited synchronous machine with damper cage |
|---|---|---|
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rotorDisplacementAngle |
Type: RotorDisplacementAngle Description: Rotor lagging angle |
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groundExcitation |
Type: Ground Description: Ground node |
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constantSpeed |
Type: ConstantSpeed Description: Constant speed, not dependent on torque |
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mechanicalPowerSensor |
Type: MechanicalPowerSensor Description: Mechanical power = torque x speed |
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electricalPowerSensor |
Type: ElectricalPowerSensor Description: Instantaneous power from space phasors |
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currentQuasiRMSSensor |
Type: CurrentQuasiRMSSensor Description: Length of space phasor -> RMS current |
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sineVoltage |
Type: SineVoltage Description: Polyphase sine voltage source |
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star |
Type: Star Description: Star-connection |
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ground |
Type: Ground Description: Ground node |
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rampCurrent |
Type: RampCurrent Description: Ramp current source |
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terminalBox |
Type: TerminalBox Description: Terminal box Y/D-connection |
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smeeData |
Type: SynchronousMachineData Description: Synchronous machine data |