Variable speed shaft generator (PTO/PTI)

Using the energy efficient main engine to generate electrical power (PTO), the system can boost the main propulsion shaft (PTI), and also provide Power take home (PTH) for an extra layer of redundancy. In addition, the system offers the opportunity to connect energy storage, shore to ship power and other new energy sources and functionalities to the power and propulsion plant.

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Comply with regulations

Add new functionalities and energy sources to the power plant, such as energy storage and shore connection, for a future proof vessel.

Lower CAPEX


Optimise the power plant with smaller or fewer auxiliary engines, and the option of lower maximum engine design power without lowering maximum vessel speed.

Faster payback time


The highly efficient system enables faster payback time by reducing fuel consumption.

3D rendering of a cargo ship illustrating a shaft generation use case

ABB shaft generator systems to support ten COSCO Shipping container vessels with energy efficiency

The system will yield fuel savings of up to 17 percent, and it will have up to 20 percent of a smaller footprint compared to traditional, synchronous excitation-based shaft generator systems.

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Highlights

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Press release

ABB permanent magnet shaft generator technology to power 15 LNG carriers for Qatar Energy

ABB permanent magnet shaft generator technology chosen for 15 liquified natural gas (LNG) carriers to be built by Samsung Heavy Industries Co., Ltd.

 
Press release

ABB introduces CO2e Calculator for enhanced transparency on emissions in vessel operations

The CO2e Calculator allows shipowners to estimate the reductions in carbon dioxide-equivalent emissions enabled by ABB solutions

Press release

ABB to maximize fuel efficiency on world’s first CO2 carriers for Northern Lights carbon capture project

Permanent magnet shaft generator system will produce electric power for all onboard systems in the most energy- and cost-efficient way. The CO2 carriers will be key to Norway’s Northern Lights carbon capture and storage project, helping accelerate industrial decarbonization.

Group web story

ABB leads with technology for greener shipping on World Maritime Day

With its comprehensive offering of integrated systems and technologies, ABB is helping the marine industry become more sustainable.

Press release

ABB wins contract to equip Knutsen shuttle tankers with electric solutions for higher efficiency and sustainability

First two shuttle tankers for Knutsen NYK Offshore Tankers (KNOT) to feature battery technology, in addition to a wide scope of ABB’s electric solutions, will achieve significant gains in fuel efficiency, operational flexibility and emissions reduction

Web story

Going hybrid and electric: merchant shipping’s sustainable route-finder

Zero-emission operation dry cargo ship enabled by hybrid and electric solutions – distant dream or commercially viable proposition? Discuss.

ABB to power South Asia’s first LNG hybrid tug for efficient and sustainable operations

Extensive ABB electric propulsion and power distribution package for Sembcorp Marine opens new era for higher efficiency and lower emission tug operations in Singapore and beyond

Press release

ABB wins contract to equip two next-generation shuttle tankers with future-proof solutions

ABB wins order from Samsung Heavy Industries to equip two new shuttle tankers, contracted to the world's largest offshore operator Statoil ASA, with a comprehensive scope of future-proof solutions expected to deliver better efficiency and lower emissions than any comparable tanker.

Press release

ABB shaft generators and turbochargers to raise the energy efficiency on environmentally friendly cargo vessels

ABB shaft generators will raise the energy efficiency on two DFDS vessels which have been designed to meet the latest environmental regulations.

Learn more about how the Variable Speed Shaft Generator (PTO/PTI) works


ABB slow speed shaft generator solutions are for low and medium voltage systems, covering powers up to 6 MW and more. The same unit can be used as a generator (PTO), booster motor (PTI) or alternative propulsion system (PTH).

Watch our video to find out how ABB shaft generators are designed to ensure that assembly and installation are fast and easy. Based on our extensive experience in supplying equipment for marine applications, the generators are optimized to meet the needs of the individual vessel.

Related solutions

Onboard DC Grid™
AC Solutions
Energy storage
Shore connection
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