Page 44: of Offshore Engineer Magazine (Sep/Oct 2020)

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PRODUCTS Power Generation





Ørsted plans to make any intellectual

WARTSILA MAERSK SUPPLY property generated in designing the inte-


SERVICE/ORSTED gration of the buoy into the offshore wind

The Wärtsilä hybrid system is designed

POWER BUOYS asset publicly available to maximize the

COLD-IRONING @ SEA and integrated to optimize the overall uptake potential of this carbon reduction operation of the vessel. The system en- Danish offshore vessel frm Maersk Sup- ply Service and its compatriot offshore innovation across the offshore wind sector.

sures fuel savings and reduced mainte- nance costs, in addition to substantial wind developer Ørsted, are testing an

SAFT reductions in emissions. innovative charging buoy that can bring


At the center of this is the Wartsila En- green electricity to offshore wind farm

BATTERY UPGRADE ergy Management System (EMS). This service vessels and potentially to a wide

Battery company Saft has launched a controls the energy fows between the range of maritime vessels.

The buoy could be used to charge the new range of nickel batteries so that off- different power sources and connects shore operators can cut maintenance. to the onboard navigation system, en- smaller battery- or hybrid-electrical ves-

The Compact range is designed as a abling an entirely new level of onboard sels and to supply power to larger ves- drop-in replacement for existing lead-ac- interaction. sels, enabling them to turn off their en-

By increasing the power redundancy, gines when laying idle. By substituting id backup batteries. Unlike other nickel fossil-based fuels with green electricity, batteries, they have the same charging the system allows the engine to oper- arrangements and ft easily inside the ate closer to its optimum design point virtually all emissions would be elimi- same footprint as lead-acid batteries. where it has the highest effciency and nated while the buoy is in use.

Offshore operators will beneft from least emissions. The solution reduces The prototype buoy has been devel- oped by Maersk Supply Service while the nickel batteries’ 20-year life and zero operating costs, optimizes energy eff- maintenance requirements. This com- ciency, and increases safety while meet- Ørsted is responsible for the buoy’s in- ing stringent environmental regulations. tegration with the electrical grid at the pares with lead-acid’s life of seven years

To save space, the hybrid solution can offshore wind farm. The charging buoy with regular testing. The batteries are be retroftted to vessels either above or will be tested in the second half of 2021, designed for essential control systems where it will supply overnight power to and other critical equipment in remote below deck.

and hard-to-access installations.

one of Ørsted’s service vessels. 44 OFFSHORE ENGINEER OEDIGITAL.COM

Offshore Engineer