| dc.description.abstract | Hybrid electric power systems (HPS) have successfully been integrated in the road-traffic
industry due to enhanced efficiency and environmental benefits. Recently this concept
has been implemented in the marine sector. In this master thesis, the construction of a
DC hybrid power system for a marine vessel is outlined in detail. The HPS is developed in
Matlbat/Simulink and comprises two set of diesel generators with variable speed, six-pulse
diode bridges, a battery bank, bidirectional converter and a constant power load (CPL).
The associated controllers which are designed includes battery controller, engine speed
controller and voltage-exciter controllers. An emphasized focus will lay on structures of
voltage-exciter controllers. For this purpose, control structures for operation of generator
set alone or together with the battery are investigated. The performance of all controllers
are tested for a specific test-bench. In addition to this, specific fuel-oil consumption
(SFOC) of the diesel engine will be evaluated through an implemented SFOC-model,
where SFOC for operation both with and without battery is compared. | |
