Ampere (ship)
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The Ampere is an electric ferry , a car ferry that draws its energy from batteries that are supplied with electricity from the shore. It is a catamaran , was developed as the "ZeroCat 120" project by the Norled shipping company , the Fjellstrand shipyard and Siemens , and has been commuting across the Sognefjord since the beginning of 2015 .
history
The reason for the development of the electric ferry was a competition announced by the Norwegian Ministry of Transport for this ferry connection. The Norwegian shipping company Norled, a subsidiary of Det Stavangerske Dampskibsselskab , won the tender. The shipping company is awarded the concession to operate the ferry until 2025. Since Norwegian electricity is generated almost exclusively from hydropower, the ferry can be operated with no direct and low indirect CO 2 emissions.
The electric ferry was ordered from the Norwegian shipyard Fjellstrand by the ferry company Norled in November 2012, the keel was laid in May 2013 and in January 2015 it was named Ampere and delivered. It has been operating between Lavik and Oppedal on the Sognefjord since 2015 . The ampere covers a distance of 3 nautical miles across the Sognefjord 30 to 35 times a day and, depending on the ambient conditions, consumes 150-200 kWh per crossing. It can transport 120 cars and 350 passengers in the 20 minutes' journey. Each port lay time is ten minutes; During this time, the batteries are charged using shore batteries.
Development, design and construction
The 80 meter long and 21 meter wide catamaran hull of the "ZeroCat 120" is made of aluminum in order to achieve a low weight. The development of the innovative drive and storage system as well as the main design features of the ship came from the owner Norled, the Siemens company and the Fjellstrand shipyard. The detailed construction, class drawings, FE and stability calculations of the aluminum catamaran were largely created by the company GSM-Design Group (Nelton) in Gdansk. The demanding construction of the aluminum hull with partial equipment and extensive piping was carried out at the Danzig special shipyard Aluship Technologie. The electrical systems, the drive system (Bluedrive) came from Siemens and the batteries were supplied by the Canadian company Corvus. The other ship equipment, the installation of the technical systems and the entire drive train including the propellers as well as the technical tests were largely carried out by the Fjellstrand shipyard in Norway.
Description of the battery ferry
The heart of the ship is a lithium polymer battery system from Corvus. It consists of 160 batteries × 6.5 kWh and has a DC voltage of 900 V. The battery system has a weight of 11 tons and a capacity of 1000 kilowatt hours (kWh), which is sufficient for several crossings. The electrical drive system was developed and supplied by Siemens Norway. The propulsion concept was developed in cooperation with DNV-GL, tested in many studies and as the first ship in its class to be certified according to the new DNV-GL rules for battery-powered ships.
The catamaran with two narrow hulls is driven by electric motors with an output of 800 kW in normal operation, depending on the crossing, by a propeller in the rear or in the front . At a nominal speed of ten knots, around 400 kW of power are required. Depending on the ambient conditions, 150 to 200 kWh are used for a trip across the fjord. The ferry was voted “Ship of the Year” in 2014 by the Norwegian trade journal Skipsrevyen and awarded at the SMM shipbuilding fair in Hamburg.
Charging the lithium polymer batteries in Lavik and Oppedal
Because the power grid in both ports with 22 kV is too weak to provide the necessary 1250 kilowatts of charging power for the ship's batteries, batteries with a capacity of 390 kWh were installed in both ports. During the 50-minute absence of the ship, the shore batteries are charged with lower power from the shore network and the stored energy is transferred to the ship's batteries with a connector system or via a pantograph during the 10-minute berth time with high charging power .
See also
literature
- Fjellstrand AS . In: Ship & Offshore , Heft 4/2015, p. 33 (Special: Nor-shipping 2015) (English language)
Web links
Individual evidence
- ^ A b c Lecture: Christian N. Müller, Siemens AG Hamburg: ZeroCat 120, a 1,000 kilowatt hour battery ferry for Norway; in the yearbook of the Shipbuilding Society, volume 109, 2015
- ↑ zeit.de: Sure ship!
- ↑ norled.no ( Memento from December 24, 2014 in the Internet Archive )
- ^ First car ferry with purely electric propulsion , Research & Development, Siemens, accessed on March 5, 2013.
- ↑ Electrically powered car ferry in operation from 2015 , feelGreen.de, January 16, 2013, accessed on March 5, 2013.
- ^ ZeroCat 120 , Ship of the Year, accessed September 15, 2014.
- ↑ Electric ferry awarded ( Memento from September 21, 2014 in the Internet Archive ) , daily port report from September 12, 2014, accessed on September 15, 2014.