STADT Brochure

Product catalog summary

Introduction
The STADT Group, founded in 1985, specializes in developing power inverters for ship applications. Located in Norway's maritime cluster, STADT has been a pioneer in creating compact, water-cooled inverters for diesel-electric propulsion and offshore applications.

Technological Advancements
STADT's innovative journey began with the launch of a modern inverter series in 1997, leading to significant business growth. In 2001, the water-cooled IGBT-converter business was sold to ABB. Since then, STADT has focused on developing the 5th generation AC drives, known as STADT NO-LOSS drives, which were patented in 2008. These drives are recognized for their efficiency and minimal electric disturbances.

STADT NO-LOSS Drives
The NO-LOSS drives offer several advantages over traditional PWM technology, including:

Sinusoidal voltage and current, reducing harmonic disturbances.
Up to 60% reduced fuel consumption and only 6% electric system losses.
Significant reductions in NOx, SOx, and CO2 emissions.
High reliability with a mean time between failures (MTBF) of 7 years and mean time to repair (MTTR) of 1 hour.
Estimated lifetime of over 25 years.

Comparison with Other Technologies
STADT NO-LOSS drives outperform other technologies in several key areas:

No electric energy transformations, unlike PWM systems.
No need for water cooling or power transformers.
Minimal maintenance requirements and globally available spares.
Lower weight and size compared to other drive systems.

Product and Service Offerings
STADT provides a comprehensive range of services and solutions, including:

Engineering, manufacturing, commissioning, and global services.
Solutions for LNG-electric, diesel-electric, hybrid-electric, and battery-electric systems.
Products like STADT NO-LOSS drives, AC motors, transformers, and power management systems.

Conclusion
STADT's lean propulsion design offers a sustainable, efficient, and reliable solution for modern ships, emphasizing reduced emissions, cost efficiency, and increased cargo capacity.

Catalog excerpts

SIMPLY THE BEST SOLUTION FOR FUTURE SHIPS

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The STADT Group was founded by Hallvard L. Slettevoll in 1985. In December 2015 - the 30th anniversary was celebrated. At the same time the group moved in to the new and modern STADT Maritime Center in Gjerdsvika. With a location in the middle of the maritime cluster on the west coast of Norway, the aim has always been to develop power inverters for ship applications. In 1997, after several years of intensive developments, an innovative and modern inverter series was launched. A major advantage of these inverters, was the very compact design due to direct water cooling. The first STADT delivery...

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STADT LEAN PROPULSION DESIGN - PATENTED LEAN TECHNOLOGY Superior technology with Stealth performance. The STADT NO-LOSS drive provides sinusoidal voltage and current to the electric motor and back to the main switchboard. This gives very low harmonic disturbances in main switchboard and AC motor. A SUSTAINABLE LEAN SOLUTION, BECAUSE: • • • • • • • • • Reduced fuel consumption, by up to 60 % Reduced electric losses in systems, only 6 % Reduced NOx, SOx and CO2 emission Reduced maintenance and high redundancy MTBF: 7 Years, MTTR: 1 Hours Reduced noise and no EMC – a Stealth solution Highly reliable,...

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DISCOVER THE POWER OF SIMPLICITY MORE: + REDUNDANCY IN DRIVE (FULL R.) + STEALTH + HMS AND COMFORT (SILENCE) + REDUNDANCY, ALSO IN AC PROPULSION MOTORS ELIMINATED: - POWER DISTURBANCE THD ON GRID - HARMONIC FILTERS (HF) - 12 P - 24 P TRANSFORMER - NOISE (PWM>EMC) - EXPLOSION RISK (CAPACITORS) - 80.000 COMPONENTS - HARMONIC FILTERS (HF) - COOLING SYSTEMS (WCS) - 5-6 % WASTED HEAT - COMPLEXITY

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STADT NO-LOSS DRIVES STADT NO-LOSS DRIVES THE STADT SCOPE To create the Lean Propulsion Design, we offer a full product range as listed below. The range is available for both low and medium voltage. STADT NO-LOSS DRIVES STADT NO-LOSS DRIVES STADT NO-LOSS DRIVES, ALL VOLTAGE LEVELS FROM 230 V T0 15 KV. SCALABLE IN POWER UP TO 50 MW PER PROPELLER. STADT AC MOTORS, A BROAD RANGE. Hybrid - electric Battery - electric STADTDiesel - electric • TRANSFORMERS STADT TRANSFORMERS LNG - electric Diesel - electric Hybrid - electric Battery - electric Engine Manuf Comm Global • Engineering • SERVICES: Manufacturing...

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COMPLETE SILENCE - FROM STADT No electromagnetic interference, EMI, due to sine wave operation No acoustic switching noises No harmonic voltage distortion, THD, on the ship No transformers for the propulsion are needed No electric losses in the drives at normal operation ( BP ) High redundancy in all levels of the drive systems Major reduction of space and weight for the drives Minimal need for cooling of drives and its systems No need for screened power cables and cable segregation Rugged and very well proven technologies. MTBF and lifetime improved dramatically compared to competitors Simplified...

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LEAN BRINGS YOU + SAFETY & RELIABILITY + VERY LONG LIFETIME + STEALTH & HSE + MORE CARGO CAPACITY STADT AS Molovegen 50 | N-6083 Gjerdsvika | Norway Tel.: +47 700 25 800 | www.stadt.no + LESS EMISSION AND FUEL + COST EFFICIENCY

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