PDF《Case story | VACON? NXP Liquid》

re compact, which is very important on board ship, and they combine excellent performance with an efficiency of better than 98% and a power factor of 0.99. And, thanks to the previous experience of our Director of Vessels, Jim Anderson, we knew that VACON? drives from Danfoss offer long, reliable operating lives in the toughest of shipboard environments. The drives are also well priced. Because of the novelty of this application, extensive on-shore factory tests and trials were carried out on the new drive system before it was installed in the first vessel. This proved the concept and also enabled potential problems to be identified and addressed at an early stage. In fact, system implementation proved to be largely trouble-free, apart from some minor teething problems encountered with the integration of the battery management systems. MV Hallaig, which was the first ferry to incorporate the new environmentally friendly hybrid drive system, accommodates

150 passengers and

23 cars or two HGVs, and has a service speed of nine knots. It entered regular service in November 2013, and is delivering impressive results.

3 We will certainly look at hybrid technology in any further new small vessels or upgrading existing vessels. And, of course, it depends for its success on the use of reliable, efficient and well-engineered components, which, as it happens, is a very good description of VACON? NXP drives from Danfoss. John Salton, Fleet Manager and Project Director, CMAL DKDD.PC.938.A1.02 ? Copyright Danfoss Drives | 2017.12 Against a target of 20% reduction in fuel usage and emissions, the vessel is actually achieving a reduction in fuel consumption of 38%. It is anticipated that this will lead to a decrease in CO? emissions in excess of 5,500 tonnes over the lifetime of the vessel, with a proportionately similar decrease in sulfur and nitrogen oxide emissions. Other benefits are that the new drive system incorporates a high level of redundancy, allowing the vessel to continue to operate even if one of its two drive systems fails. It can also operate even if no diesel fuel is available and, indeed, it regularly provides the Sunday service between Raasay and Sconser running on battery power alone, which means that the level of emissions is zer........