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