73/78 SUREWAVE SFC USER MANUAL
PEBBs
SureWave SFC
Main
Controller
GDM
Output Isolation
Transformer
3
3
3
External Voltage
Sense Board
Control I/O
Sync enable
Droop enable
Synchronized
AC Bus
Output CB
Generator CB
3
Figure 11-3: Seamless transfer from the SFC to generator
11.6.2.2 SFC to generator transfer procedure
The procedure for transferring from generator to SFC is as follows. Please refer to the SureWave
commissioning manual for a complete detailed transfer procedure description.
Step
Description
1
With the generator contactor open, start the generator.
2
Once the generator output is stable and ready for loading, enable SureWave V/F droops
to allow the SFC to parallel with the generator when the generator is online.
3
Command the SureWave SFC to synchronize to the reference as measured on the exter-
nal voltage sense board.
4
Once the SFC is synchronized, the generator CB can now be closed connecting the gen-
erator to the AC bus.
6
Once the generator is online the SFC can be off loaded and switched off. The AC bus is
now being supplied from the generator.
Table 11-2: SFC to generator transfer procedure
11.6.2.3 Parallel operation with generator
If a long-term parallel operation and load sharing with a generator is required, ensure the gener-
ator has the identical voltage and frequency setpoints, as well as equal droop characteristic set-
tings for both voltage and frequency. Follow the steps above until step 6. The SFC and generator
will now be sharing the load.
