• 2019 October 5 10:32

    Volvo Penta gensets power Sweden’s largest electric-hybrid ferry

    Volvo Penta says that the largest electric-hybrid ferry in Sweden is powered by its gensets. The Tellus ferry operates the 1.8km-wide Gullmarsleden waterway between Uddevalla and Lysekil – one of Sweden’s busy maritime routes.

    The Tellus ferry was commissioned by the Swedish Transport Administration and built by Baltic Workboats Shipyard – an Estonian company that’s made over 200 workboats and who currently have 30 workboats on order. The 100m-long ferry took 16 months to build and can carry cars, trucks as well as 300 passengers.

    The ferry has two electric-driven POD propulsion units, one at either end of the vessel – so that it doesn’t have to turn to go back and forth across the fjord. Energy to the propulsion units is taken either from the batteries or from four Volvo Penta D16 MH engines. These engines drive synchronous reluctance assisted permanent magnet (SRPM) technology generators. These units can be driven individually or all four in parallel to optimize fuel consumption and emissions. These marine gensets have been supplied by the Baltic state Volvo Penta Center BMG Power Systems.

    Strong reliable partnerships

    BMG Power Systems specializes in heavy-duty engines and has a longstanding relationship with Volvo Penta in the marine commercial, leisure, and industrial segments. It also has a unique partnership with Baltic Workboats Shipyard, which spans over 10 years making it the perfect bridge for a project like this.

    Tõnu Kirs, Managing Partner at BMG Power Systems explains that: “Volvo Penta’s engines were the perfect match for this project. Not only are they powerful and reliable but the servicing network is outstanding, especially in Sweden.” He goes on to comment that: “When it comes to public transport you can not risk long periods of downtime. The customer wants to be reassured– in the unlikely case – that something goes wrong that it can be sorted quickly and efficiently and with Volvo Penta, that’s guaranteed.”

    The power of four

    While there are four Volvo Penta D16 engines onboard for the majority of the time the ferry usually only needs one engine to power its trips. The other engines are precautionary, needed only during tough weather and sea-ice conditions.

    Sander Pielberg, Project Manager at Baltic Workboats explains that: “We have a relationship with Volvo Penta that spans over 10 years and know and trust their products. Our strong ties with local partners – BMG Power Systems– also meant that we had the support we needed throughout the project.” He continues: “We have the tools, training, and expertise to install these gensets easily and the power output is extraordinary.”

    In addition to the D16 MH variable speed engines found in Tellus, Volvo Penta also produces MG engines. Volvo Penta’s IMO II-compliant constant speed engines now produce 479 kWm at 1,500 rpm and 532 kWm at 1,800 rpm, corresponding to a 50 Hz genset providing 450 kWe and a 500 kWe delivery at 60 Hz. The MG engine has the toughest marine genset rating, ensuring high output around the clock, with a reduction of fuel consumption of up to 3% – compared to the older version of the engine. All Volvo Penta engines accept HVO, which means emissions can be cut to next to nothing. Volvo Penta is unique in that it is one of the only manufacturers making DC gensets that directly charge batteries and DC-motors in diesel-electric systems with no batteries.

    Engines driving us towards electromobility

    The move towards electromobility is vital and Sweden was among the first nations to pledge to reduce its emissions and become fossil-free by 2045. These commitments have resulted in increased demand in the market for more powerful gensets to power auxiliary systems, hybrid vessels, and diesel-electric vessels. To meet these demands – for more power – Volvo Penta has upgraded its D16 range to meet 450 and 500kWe.

    The Swedish Transport Administration’s goal is to go fully electric. However, current infrastructure cannot support full-electromobility and electric vessels cannot travel long distances, therefore, there has also been a trend of using these gensets as alternative propulsion systems to power diesel-electric hybrid vessels – until the charging infrastructure is in place. This is the case for the Tellus ferry. For the moment, Tellus’ 12 Corvus battery-racks – with a total capacity of 949 kWh – are being charged at night via an onshore charging station and can also be charged by the Volvo Penta D16 engines while in operation. The ferry can currently complete three trips in full electric mode before the D16 gensets are needed to take over.

    Volvo Penta is an active player in supplying the hybrid solutions market and continue to work hard to improve their power solutions to propel the electromobility journey.

    ABOUT VOLVO PENTA
    Volvo Penta, with approximately 3,500 dealers in over 130 countries, is a world-leading and global manufacturer of engines and complete power systems for boats, vessels and industrial applications. The engine program comprises diesel and gasoline engines with power outputs of between 10 and 1000 hp. Volvo Penta is part of the Volvo Group, one of the world’s leading manufacturers of heavy trucks, buses and construction equipment.




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