| 摘要 |
FIELD: electricity.SUBSTANCE: ship electric generating plant contains main diesel engines or turbines, main synchronous generators, emergency diesel generator unit, stator windings, main distributing board, inputs of frequency conversion rectifiers. The stator windings through automatic circuit breakers are connected to power supply lines of main distributing board, to which through the automatic circuit breakers inputs of frequency conversion rectifiers are connected. The number of rectifiers is equal to number of lines of the main distributing board, the outputs of rectifiers are connected to inputs of multilevel invertors forming with rectifiers the frequency converters, feeding propulsion electric motors. To each line of the main distributing board through the automatic circuit breakers the primary multiphase windings of transformers with a rotating magnetic field are also connected, and the secondary three-phase windings of these transformers through automatic circuit breakers are connected to the three-phase power supply line of the distributing board of other on-board consumers. The stator winding of the emergency diesel generator through automatic circuit breakers is connected to the three-phase power supply line of on-board consumers. The stator of each main synchronous generator has one multiphase winding with a number of phases more than three, the phases of which are connected in a star or delta circuit, and the lines of the main distributing board have the same number of phases, as winding of main synchronous generators.EFFECT: providing by the electric power of ship consumers and electric motors from one power plant, increase of efficiency and quality of the electric power in a ship network.1 dwg |
