Schottel has introduced propulsion systems for electric-drive vessels, providing more flexibility to designers
The German manufacturer has unveiled its latest thruster with an electric motor for diesel-electric or battery-powered vessels, including the latest tug designs. Its embedded L-drive (LE-drive) enables naval architects to introduce more variants into their vessel designs, compared with conventional Z- and L-drives.
This comes as more vessels and tugs are being designed and built with all-electric or hybrid propulsion to cut emissions in ports and around coastlines.
LE-drives are available for Schottel’s RudderPropellers (SRP) and EcoPellers with options to include fixed-pitch or controllable-pitch propellers.
Schottel said the installation height of an LE-drive, including the electric motor installed on top of it, is comparable to that of a Z-drive. It is also energy efficient, reducing losses from conversions between electrical and mechanical forces.
“The omission of the upper gearbox further increases mechanical efficiency by approximately 3%,” said Schottel. “At the same time, fuel consumption is reduced, resulting in lower operating costs.” The omission of the upper gearbox also reduces vibration and noise levels, improving comfort for crew on board.
These electric drives enable SRPs to “achieve high bollard pull values and optimum efficiency on medium-speed vessels” said Schottel.
On the EcoPeller, it “ensures high propeller performance in terms of overall efficiency and enables course stability for more demanding applications at higher speeds”.
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