Ismir Fazlagic Global Products and Solution Manager Norshipping

Ismir Fazlagic, Global Products and Solution Manager, Nor-shipping 2013 Onboard DC Grid The step forward in Power Generation and Propulsion © ABB Group 26 November 2020 | Slide 1

Imagine your next ship: Proven technology and prepared for the future © ABB Group 26 November 2020 | Slide 2 § Greener § Smarter § Simpler § Be competitive now and stay competitive for the next 20+ years

Onboard DC Grid SFOC – Fixed Speed Engine Load [% of MCR)

Onboard DC Grid Configuration overview § Traditional AC System Removed components § Onboard DC Grid ES: Energy Storage FC: Fuel Cell Developed components

Onboard DC Grid Vessel layout example – Onboard DC Grid Control System AC Consumers Bus Ducts VFD Consumers Generator & Rectifier Energy Storage Converter

Onboard DC Grid Enabling Optimum Operation of Engines at low load Engine Fuel Consumption 290 270 g/kwh 250 230 Fixed speed engine Variable Speed Engine 210 190 170 10% 20% 30% 40% 50% 60% Load [% of MCR) 70% 80% 90% 100%

Onboard DC Grid Efficiency - Variable Speed Operation SFOC Reduction [ %] 25. 0 % Full Speed Range (60%-100% 20. 0 % Limited Speed Range (80%100%) 15. 0 % 10. 0 % 5. 0 % 0% 20% 40% 60% Load [% of MCR] § Reduction of SFOC by up to 21% § Reduced Emissions § Cleaner combustion § Reduced Engine Maintenance 80% 100% 120%

Onboard DC Grid Weight and Space Savings § 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

Onboard DC Grid Reference case – Dina Star Delivered: March 2013 Voltage Level: 1000 Vdc Speed range: 1200 -1800 rpm Engines: 4 x Catepillar 3516 C 1 x Catepillar C 32 Generation: 4 x 2. 24 MW UNIREC 1 x 920 k. W UNIREC Propulsion: 2 x 2. 2 MW ACS 800 Thrusters: 2 x 925 k. W ACS 800 Tunnel 1 x 880 k. W ACS 800 Azimuth

Onboard DC Grid Dina Star – Performance Fuel Savings § ~10% for a typical operational profile. Compared to fixed speed DE equivalent. Blackout restart § Generator Online: 12 s § System Recovered: 17 s Main Propulsion Ramps § More dynamic than AC system with same engines @ 1800 rpm § 0 -70% Power: 7 sec § Ramp is adjusted as a function of no. engines online Power Limitation § Power limitation sent and feedback received within 200 ms Engines § «medium speed reliability with high speed footprint and performance» Load Steps § System survived a 1400 k. W load step on G 5 @ 1200 rpm FMEA § No findings during DP 2 FMEA Major Fault Recovery § Fault on internal dc link of drives cleared in <500 ms § Power restored to system in 500 ms Noise Level § «like being on a ship running on batteries»

Onboard DC Grid Up to 20% fuel saving potential Leaner system with less components and reduced complexity Quicker and more dynamic system performance Up to 30% Reduced Footprint and more flexible system design giving a higher vessel value