Woodward DSLC-2 - Var;PF Control Configuration

Manual 37443A DSLC-2 - Digital Synchronizer and Load Control
© Woodward Page 71/226
Menu 4 – Var / PF Control
This menu contains the adjustments for reactive load control.
Figure 3-15: ToolKit – var / pf control
PID Voltage Trimmer
ID
Parameter
CL
Setting range
Default
Description
5610
Voltage trim
proportional
gain
2
0.01 to 100.00
0.50
The setpoint for the voltage trim is the voltage control setpoint (pa-
rameter 5600). When in Isochronous or load sharing mode, in-
creasing the proportional gain, increases the sensitivity to the er-
ror between the generator voltage and the desired voltage
(parameter 5600). If the gain is configured too high, the result is
excessive overshoot/undershoot of the desired value. Remember
the voltage trim PID is active during load sharing. Setting the pro-
portional gain to high may cause instability with the var sharing
function.
NOTE: Not active during synchronization.
5611
Voltage trim
integral gain
2
0.01 to 100.00
1.00
The integral gain corrects for any offset between the system rated
voltage (parameter 5600) and the generator voltage. If the integral
gain constant is too large, the voltage will continually oscillate. If
the integral gain constant is too small, the voltage will take too
long to settle. The integral gain constant must be greater than
the derivative time constant. Remember the voltage trim PID is
active during var sharing. Setting the integral gain to high may
cause instability with the var sharing function.
NOTE: Not active during synchronization.