Scientific and Technical Journal


ISSN Print 2221-3937
ISSN Online 2221-3805

Currently, the main engines with electronic control are becoming increasingly common on sea-going vessels. The task of implementing e-management is to further improve the energy efficiency of the vessel by optimizing the working process, reducing NOx emissions with exhaust gases to the standards established by MARPOL 73/78, and reducing the specific fuel consumption.

The purpose of this work is to analyze the energy efficiency of ships when equipping the ship electric power system (SEPS) with additional sources of electrical energy and familiarize electrotechnical officers with modern acquisition trends, operating modes of ship power plants for their energy-efficient and trouble-free operation.In modern models of diesel-electric propulsion systems, the introduction of electronic control of the engine working processes, in particular the gas exchange system, has resulted in a significant increase in the energy of the exhaust gases. This, in turn, made it possible to use the energy of gases not only in gas turbochargers, but also in additional systems for generating electrical energy, such as turbogenerators.The article considers the issues of determining the power and composition of the SEPS. The introduced concept of the generalized SEPS allows to simplify the analysis of any SEPS containing its individual components or their combinations.The installation of the shaft generator makes it possible to obtain both an additional source of electrical energy and a stabilization device for the moment of the gas turbine, and in the event of a failure, the main engines is an alternative / emergency source of traffic. The power of additionally installed generators is commensurate with the total power of all diesel generators. This determines the philosophy of the ship's power plant: turbo-generator - shaft generator - diesel generators. This increases the reliability of the entire power plant, saves a significant part of the fuel, which contributes to improving the energy efficiency of the vessel as a whole.

DOI 10.15276/eltecs.28.104.2018.17
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