Woodward Digital Synchronizer and Load Control (DSLC) OPERATING MODES

OPERATING MODES

Isolated Bus — The DSLC talks over its LON to share

proportional real and reactive loads.  Real load (kW) is

controlled using percentages of full load for each machine,

and reactive loads (kVAR) are

shared by matching power factors.

The DSLC maintains a specified

bus voltage and frequency while

balancing loads.

Utility Parallel — The DSLC

measures real load (kW) on the

generator and adjusts the speed

control to match a set base load, to

control a process at a user-chosen,

externally adjustable setpoint.  Or it

can set a constant import/export

level using an MSLC ( Master

Synchronizer and Load Control).

The DSLC can also measure and

maintain a set reactive load (kVAR)

or can maintain a user-prescribed

power factor.

Transition Between Modes — The

DSLC will ramp at a user-chosen

rate from one mode to another

until the control is within 5% of its

target. It then shifts into dynamic

control, allowing bumpless

operating mode changes. In

addition, the DSLC automatically

changes its VAR/PF mode when

the real load mode is changed to or

from an isolated bus, load sharing

mode. Manual VAR/PF control

may also be selected.