ABB launches engine speed optimising system

Dynamic AC (DAC) adjusts the rotational speed of diesel generating sets, allowing the system frequency to vary within a specified range. “Currently, many ships still run with their generators at a set speed, regardless of the power requirement, creating a surplus of wasted energy,” the company noted.

Aimed at ships with a power requirement of 20MW and above, the medium voltage power system is engineered for variable frequency, including component design and system integration. Distribution for the auxiliary and hotel loads is provided by frequency converters or directly from the variable frequency system.

ABB noted that a large cruise ship could save up to 6% (or up to 2,000 tonnes of fuel) annually by engine speed optimisation. The simple configuration uses existing and proven ABB components.

Juha Koskela, managing director of ABB Marine and Ports, said: “No matter what bunker costs are now, ship owners look to the long term and always want ways to maximize fuel efficiency, Our strong emphasis on research and development has produced a solution of great business value to our customers.”