STADT - Electric Propulsion Systems for Ships

STADT AS is a specialist in AC drives and integrated electric propulsion systems for ships. Our latest product is the Stascho innovative electric propulsion system. STADT has recently signed several contracts for various ships to use the STADT Stascho full electric ship propulsion system. Extensive testing at sea has proven the unique characteristics of the new drives on-board the seismic research vessels MS Sanco Star and MS Sanco Spirit in a full electric main propulsion system of 5,000kW.

Marine drives for electric propulsion systems

Based on 20 years of experience, the STADT Stascho electric propulsion system is our third generation of innovative electric propulsion systems for ships. It is available in models from 500kW to 50MW, with low and medium voltages up to 15kV.

The system will reduce your fuel consumption to a minimum, and leads to a major reduction of pollution from NOx, SOx and CO2. It also performs silently without any electric disturbances.

Sinusoidal AC drives for propulsion systems

The STADT Stascho electric propulsion system is based on four years of research and development. Company director Hallvard Slettevoll describes the new system as a breakthrough in technology, because it manages to combine the unique features of pure sinusoidal electric power, both for the main switchboard, and the electric motors and other electric consumers - at minimum cost and space occupation.

Sinusoidal waveform on voltage and current ensures that there will be absolutely no interferences from inverter drives to other sensitive electronic equipment on the ships - such as radars, echo sounders, and seismic research instrumentation - as well as guaranteeing no bearing damages, and an absolute minimum of acoustic noise from electric motors and drives.

This is in contrast to the approach from other well-known electric drives suppliers, whom have delivered systems with a very high degree of electric pollution / noise in their main switchboard grids.

The idea to create unique solutions based on sinusoidal pure electric power is an approach that STADT has developed in close co-operation with the Swedish company NFO Drives. The sinus technology is patented by NFO and STADT.

95% efficient electric propulsion system

Another major advantage with this new system is efficiency, which has been improved from 88% to 95%. This will give a huge saving in transit speed condition.

System integration

We have long experience in system design and integration for different kinds of ship projects. Our broad range of system components, in different types of technologies, enables us to design optimum solutions for each individual project.