High-Frequency Exciter
Electromachine high-frequency excitation.
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
-
- is the equivalent time constant of the exciter;
-
- output voltage of the automatic excitation regulator;
-
- excitation voltage;
-
- generator rotor speed in relative units.
Ports
Input
#
Vr
—
input voltage value from the excitation regulator
scalar
Details
Input voltage value from the excitation regulator in relative units.
| Data types |
|
| Complex numbers support |
No |
#
ω
—
input value of generator rotor speed
scalar
Details
The input value of the generator rotor speed in relative units.
| Data types |
|
| Complex numbers support |
No |
Output
#
Efd
—
excitation voltage output
scalar
Details
The output value of the excitation voltage applied to the excitation circuit of a synchronous machine, in relative units.
| Data types |
|
| Complex numbers support |
No |
Parameters
Main
# Exciter field time constant T_e, s — exciter time constant
Details
Exciter time constant, in seconds.
Usually the exciter time constant value for the electric machine excitation system is 0.3-0.5 s, for thyristor excitation system - 0.02-0.04 s.
| Default value |
|
| Program usage name |
|
| 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 field circuit of a synchronous machine, in relative units.
| Default value |
|
| Program usage name |
|
| Evaluatable |
Yes |
Initial Values
# Initial field voltage Efd0, pu — initial value of excitation voltage
Details
Initial value of the excitation voltage in relative units.
| Default value |
|
| Program usage name |
|
| Evaluatable |
Yes |