Pi Controller; Controllers - Deif Multi-line 2 Designers Reference Handbook

AGC
The unit controller is a PI controller. It consists of a proportional regulator and an integral
regulator. The PI controller is able to eliminate the regulation deviation and can easily be tuned
in.
See 'General Guidelines for Commissioning'.
There are two controllers for the governor control and, if option D1 is selected, also two
controllers for the AVR control.
Controller
Frequency
Power
Voltage (option D1)
VAr (option D1)
The table below indicates when each of the controllers is active. This means that the controllers
can be tuned in when the shown running situations are present.
Governor
Frequency Power
X
X
X
The frequency (and voltage) controller is activated when the gen-set is running in island
operation, stand-alone or load sharing mode. The power (and VAr) controller is activated when
the gen-set is running parallel to the mains or in load sharing mode.
Load sharing mode is option dependent (option G3).
DEIF A/S

7. PI controller

Controllers

GOV
X
X
AVR (option
dependent)
Voltage
X
X
X
X X
Designer's Reference Handbook
AVR Comment
Controls the frequency
Controls the power
X Controls the voltage
X Controls the power factor
Schematic
VAr
G
G
X
G
G
X
G
GB MB
GB MB
GB MB
GB
GB
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