https://www.electrive.com/2019/08/16/powerful-electric-ferry-ellen-takes-to-the-sea/
[image in online article]
Aug 16, 2019 - 06:07 pm
Denmark’s super ferry Ellen takes to the sea
The electric ship Ellen is to ferries what a supercar is to series
production. Yet, the vessel is made for real-life application and now
launched on its maiden journey. Full commercial operation will run
between the islands of Aerø and Als in southern Denmark.
To recap, the Ellen claims to be the world’s most powerful electric
ferry, and indeed, she is the first not to have a backup motor or diesel
emergency generator on board. Instead, the boat carries the largest
battery pack currently installed on a ship. It comes from Leclanché and
packs 4.3 MWh. The battery system uses high-energy G-NMC lithium-ion
cells with safety features, including a bi-cellular laminated design and
ceramic separators. Leclanché claims it designs and engineers a Class
Type Approved and Certified Marine Rack Systems (MRS) including Fire
prevention and extinguishing systems.
Power for the Ellen comes from a set of electric motors delivered by
Danfoss Editron of Denmark. The system consists of two 750 kW drives and
two 250 kW motors for manoeuvring. Danfoss also supplied the ship’s
energy management system and the coastal charging station.
After the maiden journey, the service covers a distance of just over 40
kilometres or 22 nautical miles between the ports of Søby and Fynshav on
the Danish islands of Ærø and Fynshav. Once fully operational, the Ellen
will carry about 200 passengers and 30 cars or five trucks on its decks.
Built at the shipyard in Søby on Als, the Ellen was conceived through a
partnership between Ærø Municipality as part of the Danish Natura
project, which aims to provide environmentally friendly transport for
residents, and the EU. The union initiated the project in 2015 with
funding through the Horizon 2020 and Innovation Program. The operators
estimate the electric ferry will save an estimated 2,000 tons of CO2 per
year in its operation.
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