STADT No-Loss Electric Propulsion Systems for Ships
STADT AS develops integrated electric propulsion systems and AC drives for marine vessels. The company’s latest product is the STADT Lean Drive innovative electric propulsion system
In December 2015, STADT celebrated its 30th anniversary in the maritime technology sector, and moved to its modern maritime centre in Gjerdsvik, Norway.
Approximately 31 ships in different categories were using the STADT Lean Drive technology by the end of 2015.
Marine drives for electric propulsion systems
The STADT Lean Drive electric propulsion system is the company’s fifth generation of its electric propulsion systems for ships. Available in models from 100kW to 80MW, the system features low and medium voltages up to 15kV.
The system minimises fuel consumption and reduces CO₂, SOx, and NOx pollution. It also performs silently without any electric disturbances.
STADT Lean Drive for propulsion systems
The STADT Lean Drive electric propulsion system is the product of four years of research and development.
Company director Hallvard Slettevoll describes the new system as a ‘breakthrough in technology’, because it combines the unique features of pure sinusoidal electric power for the main switchboard, electric motors and other electric consumers while minimising space occupation and cost.
Sinusoidal waveform on current and voltage protects sensitive electronic equipment from interference by inverter drives, such as echo sounders, radars, and seismic research instrumentation. It also minimises noise produced by electric motors and drives and guarantees protection from bearing damages.
This gives STADT’s system an edge over other well-known electric drives suppliers, who have supplied systems with a high degree of electric noise / pollution in their main switchboard grids, as well as EMI (EMC) to the surroundings.
In collaboration with Swedish company NFO Drives, STADT aims to create unique solutions using sinusoidal pure electric power. NFO and STADT have patented the sinus technology.
Noise-free and space-saving electric propulsion system
Since large propulsion transformers are not required, the STADT Lean Drive propulsion system saves space and achieves a total harmonic distortion (THD) level of less than 2%.
Sustainable and robust technology
STADT Lean Drive is extremely reliable and offers a long lifespan of 30 years or more.
This durability is achieved by using fewer components in the drive system, as well as different parallel technologies that are redundant to each other.
STADT has extensive 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.
Products and Services
The Guideline to Electric Propulsion
Electric propulsion is a natural choice for a lot of different ship types, and there are many reasons why this solution is so popular. Fuel savings, emission reductions, ECA regulations, redundancy, reduced noise and vibration, low maintenance, space utilisation, battery storage, and the use of LNG-electric propulsion are just some of the reasons to choose electric propulsion.
Topaz Master and Topaz Mariner vessels have become customers of STADT.Read more
After some years of preparation, STADT has moved into a new maritime centre in Gjerdsvika, Norway.Read more
The Turkish shipyard Cemre has delivered the first of two seismic support vessels, on time.Read more
A new technology for speed and power control of larger machinery operated via AC motor drives has been introduced to the shipping market. The patented STADT STASCHO Sinus drive technology was first delivered to the seismic research vessel “Sanco Star “of Norway, operated by RXT. In this case thRead more
A new technology for speed and power control of larger machinery operated via AC motor-drives has been launched to the shipping market. To find out more, please download our free White Paper.Read more
STADT, a specialist in AC drives and integrated electric propulsion systems for ships, has uploaded a free white paper about its new STADT Stascho low-loss electric propulsion system. STADT Stascho utilises sinus technology rather than the widely used PWM, and this completely eliminates electromaRead more
A new technology for speed and power control of bigger machinery operated via AC motordrives has been launched to the shipping market. The patented drive technology was first delivered to the seismic research vessel MS Sanco Star of Norway. In this case the drives was used for the main eleRead more