Dual current system with a reversible shaft generator as part of a ship's power plant

The article analyzes shipboard electric power systems (SEPS) with shaft-generator units (SGU) of variable and constant speed with mechanical and electrical regulation of parameters. The operation of the SGU in the generator and propulsion modes is considered. The main advantages and disadvantages of the existing SEPS with SGU are revealed. A functional single-line diagram of SEPS with a built-in DC network is given and a possible composition of such a system is considered. The possibility of using renewable sources when using the built-in DC network is indicated. The applicability of renewable sources depending on the navigation area of the vessel is considered. Structures of a combined SEPS with a built-in DC network and a reversible shaft generator are proposed. The proposed circuit solutions for integrating a reversible shaft generator into the SEPS and their economic feasibility are substantiated.