High-Frequency Exciter
Electromachine high-frequency excitation.
blockType: SubSystem
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Path in the library: |
Description
Unit High-Frequency Exciter is an electro-machine high-frequency excitation, the exciter output voltage depends on its rotational speed, and the exciter shaft is connected to the generator shaft.
The unit High-Frequency Exciter can be used as an exciter in a synchronous generator model with a control system, which is shown in the diagram.
The mathematical model High-Frequency Exciter is presented in the diagram.
In the diagram below
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- is the equivalent time constant of the exciter;
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- output voltage of the automatic excitation regulator;
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- excitation voltage;
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- generator rotor speed in relative units.
Ports
Input
#
Vr
—
input voltage value from the excitation regulator
scalar
Details
The input voltage value from the excitation regulator in relative units.
| Data types |
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| Complex numbers support |
I don’t |
#
ωe
—
the input value of the generator rotor speed
scalar
Details
The input value of the rotor speed of the generator in relative units.
| Data types |
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| Complex numbers support |
I don’t |
Output
#
Efd
—
the output value of the excitation voltage
scalar
Details
The output value of the excitation voltage applied to the excitation circuit of the synchronous machine, in relative units.
| Data types |
|
| Complex numbers support |
I don’t |
Parameters
Main
# Exciter field time constant T_e, s — the time constant of the pathogen
Details
The time constant of the pathogen, in seconds.
Typically, the value of the exciter time constant for an electric machine excitation system is 0.3–0.5 s, for a thyristor it is 0.02—0.04 s.
| Default value |
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| Program usage name |
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| Evaluatable |
Yes |
# Maximum exciter voltage output Efdmax, pu — maximum output value of the excitation voltage
Details
The maximum output value of the excitation voltage applied to the excitation circuit of a synchronous machine, in relative units.
| Default value |
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| Program usage name |
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| Evaluatable |
Yes |
Initial Values
# Initial field voltage Efd0, pu — the initial value of the excitation voltage
Details
The desired value of the excitation voltage output is Efd at the initial moment of simulation in relative units.
| Default value |
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| Program usage name |
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| Evaluatable |
Yes |