10. SHAFT generator controller
10.1 SHAFT generator controller overview
10.1.1 Description
A SHAFT generator controller controls and protects the system when a shaft generator is connected. The SHAFT generator
controller also controls and protects the shaft generator breaker.
When the shaft generator is connected, it is normally the ship's only power source. However, it is possible for the shaft generator to
run in parallel with the gensets and supply a base load for an extended period (long-time parallel). The SHAFT generator controller
then works together with the GENSET controllers to ensure effective power management.
10.1.2 Applications
There is no restriction on the number of SHAFT generator controllers.
Figure 10.1
Example of a SHAFT generator controller application with optional heavy consumers and non-essential loads
HC
M
HC
M
HC
M
HC
M
N
E
L
N
E
L
DEIF
network
Shaft generator 1
G
SHAFT
generator
controller
Display
N
E
L
10.1.3 SHAFT generator controller functions
Functions
Pre-programmed
sequences
•
Shaft generator breaker open sequence (with de-loading)
•
Shaft generator breaker close sequence (with synchronisation)
◦
Running detection
•
Blackout close
•
Load transfer from one shaft generator to another (using gensets)
•
Load transfer from the shaft generator to a shore connection (using gensets)
•
Frequency variation: Genset(s) automatically start and connect
Load control
•
Load transfer between shaft generator and genset(s)
•
Base load from shaft generator; genset(s) load responds to demand fluctuations
•
Three sets of temperature-dependent power derate settings for each controller
Power take home (PTH)
•
Power take home (PTH) start and stop sequences
•
Use the shaft generator as a motor to drive the ship's shaft .
DESIGNER'S HANDBOOK 4189340911K UK
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