A basic functionality of Power Management Systems (PMS) is automatic load distribution, typically using the diesel engine's speed control to distribute the generator output symmetrically. This means that all generators within this network deliver the same percentage of power.
For selected generators, an asymmetric load distribution can also be selected.
Load distribution can be achieved using SYMAP® devices that continuously transmit setpoints to the speed controllers of the connected diesel generators. SYMAP® supports both dynamic and static load distribution (droop/isochronous).
The most common method is droop control, where the setpoint of the motor speed controller is reduced proportionally to the generator load. With isochronous control, the active control of active power, the speed is kept constant under all load conditions.
If the speed controllers of the generator sets do not have active power control, SYMAP® can take over this control function. To make this work, the SYMAP® devices must communicate with each other via a data interface (usually a CAN bus). The control of all generator sets running in parallel (loading and unloading, load distribution) is then performed automatically via the SYMAP® device.
Applicable products: