Onboard DC Grid The step forward in Power Generation and Propulsion © ABB Group May 14, 2022 | Slide 1 Ismir Fazlagic, Global Products and Solution Manager, Nor-shipping 2013
Dec 30, 2015
Onboard DC GridThe step forward in Power Generation and Propulsion
© ABB Group April 19, 2023 | Slide 1
Ismir Fazlagic, Global Products and Solution Manager, Nor-shipping 2013
Greener
Smarter
Simpler
Be competitive now and stay competitive for the next 20+ years
Imagine your next ship:Proven technology and prepared for the future
© ABB Group April 19, 2023 | Slide 2
Onboard DC GridSFOC – Fixed Speed Engine
Load [% of MCR)
Onboard DC GridConfiguration overview
Traditional AC System
Removed components
Onboard DC Grid
ES: Energy Storage
FC: Fuel Cell
Developed components
Onboard DC GridVessel layout example – Onboard DC Grid
Onboard DC GridEnabling Optimum Operation of Engines at low load
Load [% of MCR)
Onboard DC GridEfficiency - Variable Speed Operation
Reduction of SFOC by up to 21%
Reduced Emissions
Cleaner combustion
Reduced Engine Maintenance
Onboard DC Grid
Up to 30% reduction in weight and footprint of electrical power system
More flexible placement of electrical equipment
More functional layout of vessel
Reduction in Cu weight
40% reduction in Cu weight
75-85% reduction in corridor reserved for power transmission
Weight and Space Savings
Onboard DC GridReference case – Dina Star
Dina StarDelivered: March 2013
Voltage Level: 1000Vdc
Speed range: 1200-1800rpm
Engines: 4 x Catepillar 3516C1 x Catepillar C32
Generation: 4 x 2.24MW UNIREC 1 x 920kW UNIREC
Propulsion: 2 x 2.2MW ACS800
Thrusters: 2 x 925kW ACS800 Tunnel 1 x 880kW ACS800 Azimuth
Onboard DC GridDina Star – Performance
Fuel Savings Load Steps
~10% for a typical operational profile. Compared to fixed speed DE equivalent.
Blackout restart
Generator Online: 12s
System Recovered: 17s
Main Propulsion Ramps
More dynamic than AC system with same engines @ 1800rpm
0-70% Power: 7sec
Ramp is adjusted as a function of no.engines online
Power Limitation
Power limitation sent and feedback received within 200ms
Engines
«medium speed reliability with high speed footprint and performance»
System survived a 1400kW load step on G5 @ 1200rpm
FMEA
No findings during DP2 FMEA
Major Fault Recovery
Fault on internal dc link of drives cleared in <500ms
Power restored to system in 500ms
Noise Level
«like being on a ship running on batteries»
Annual SavingsOperation Profile and Specific Fuel Oil Consumption
Month DD, Year | Slide 11© ABB Group
Onboard DC Grid
Up to 20% fuel saving potential
Up to 30% Reduced Footprint and more flexible system design giving a higher vessel value
Quicker and more dynamic system performance
Leaner system with less components and reduced complexity
© ABB Group April 19, 2023 | Slide 13