Study of the possibility of modernization of the ship power plant of foreign-made vessels in the conditions of import substitution

The object of the study is an intermediate frequency and voltage converter, which is required to obtain electricity of the necessary parameters to power the ship's consumers. The goal is to improve the power supply system from the shore by installing a modern semiconductor converter to adapt the parameters of the power grid.

Currently, there is a problem of adapting the parameters of the ship's electrical network of foreign-made vessels to the standards of the domestic power supply system when powered from shore. The ship uses an engine-generator conversion system, which has a number of significant drawbacks. The paper considered the possibility of its replacement using a static frequency and voltage converter, which has a number of advantages over the existing scheme of power supply of the vessel from the shore.

In the process of work, the algorithm of power supply to consumers from both ship-based power sources and coastal networks has been investigated, frequency and voltage conversion schemes of the original converter and the one proposed in return have been analyzed, the designs of the converters have also been considered, advantages and disadvantages have been identified.

As a result of the study, the importance of observing network standards when powering ship consumers is emphasized, a modern converter of network parameters based on a static frequency and voltage converter has been proposed, a circuit for connecting the converter to the ship's electrical distribution system has been developed, economic and environmental justifications of the project have been presented.

As a result of the conducted research, a conclusion has been drawn that a static frequency and voltage converter can be used to convert electricity parameters, such as voltage and frequency, to power consumers requiring other values, as well as an intermediate point in the process of supplying electricity to a vessel from shore.

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