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Mask and Parameters
AVR Parameters
*Vuel is the usual input for this excitation system (see Inputs, Outputs section below), but the user can choose to use a fixed constant value directly in the mask by choosing “internal” in the mask option.
Expanding the "AC3A diagram" displays the block diagram in the parameters window.
| Name | Description | Unit | |
|---|---|---|---|
| Tr | Regulator input filter time constant. This input filter is not part of the standard and there are no typical values recommended. It was added for flexibility. NB: This parameter can be set to zero if the filter is not used. | s | |
| Kr | Constant associated with regulator and alternator field power supply. | - | |
| Tb | AVR lead-lag numerator time constant Voltage regulator time constant | s | |
| Tc | AVR lead-lag denominator time constant Voltage regulator time constant | s | |
| Ka | AVR filter gain | - | |
| Ta | AVR filter time constant | s | |
| Kf | Excitation control system stabilizer gain | - | |
| Tf | Excitation control system stabilizer time constant | s | |
| Vamax | Maximum regulator internal voltage | pu | |
| Vamin | Minimum regulator internal voltage | pu | |
Exciter Parameters
Expanding the "Exciter diagram" displays the block diagram in the parameters window.
| Name | Description | Unit | |
|---|---|---|---|
| Ke | Exciter constant related to self-excited field | - | |
| Te | Exciter time constant | s | |
| Kc | Rectifier loading constant | - | |
| Kd | Demagnetizing factor | - | |
| Se1, Se2 | Exciter saturation factor at the corresponding Vex | pu | |
| Ve1, Ve2 | Exciter voltage for the exciter saturation function | pu | |
| Kn | Excitation system stabgilzer gain | - | |
| EFDN | Value at which feedback gain changes | pu | |
| VEmin | Minimum exciter output voltage | pu | |
| Vfemax | Maximum exciter field current | pu | |
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