Voith’s new eVSP uses a permanent-magnet synchronous motor as its main drive. (Image courtesy of Voith)
German propulsion specialist Voith has launched its new electric Voith Schneider Propeller (eVSP) propeller drive. The innovative solution uses a permanent-magnet synchronous motor as its main drive, and represents a significant advance in Voith’s electrification of its drive technologies.
The new eVSP uses a permanent-magnet synchronous motor as its main drive, which is fully integrated into the VSP and significantly reduces the required oil volume. In addition, no gears or transmissions are required, enabling stepless operation and virtually loss-free conversion of the electrical drive power with dynamic response characteristics.
“With the electric Voith Schneider Propeller, we are making an important contribution to the electrification of the driveline in marine applications and thus to even more resource-saving shipping,” says Dr. Dirk Juergens, Vice President of Research & Development for Marine Applications at Voith.
Among the advantages of the new eVSP are high efficiency and the reduction of complexity, since the permanent-magnet synchronous motor is already integrated in the propeller. The complete omission of gears reduces noise to a minimum and frees up critical space on the ship. Furthermore, the reduction in the weight of the eVSP unit means it can be mounted without any shaft train restrictions.
From an operational perspective, the high efficiency and the reduction of complexity is expected to significantly reduce maintenance requirements, and lower operational costs.
“The new eVSP was developed for this purpose for all applications involved in the mobility revolution, such as offshore supply vessels, tugs and ferries.”
In addition, the eVSP offers ship operators future security through a high degree of flexibility in the choice of power generation (energy source). The Motorship reported that the first reference of the new eVSP is expected to be two newbuild CSOVs under construction for Østensjø Rederi.
The company notes that the eVSP offers the same advantages as a conventional Voith Schneider Propeller. The core principle of the VSP, the combination of drive and control in one unit, has been continuously developed and perfected over the last 90 years.