SHIP ELECTRIC POWER PLANT Russian patent published in 2019 - IPC B63H21/00 

FIELD: shipbuilding; power engineering.

SUBSTANCE: invention relates to shipbuilding, namely to electric power installations of vessels with frequency converters and propeller motors. Ship power plant comprises main diesels or turbines and main synchronous generators, on stator of which there are two three-phase, galvanically disconnected, shifted by 30 electric degrees of winding. Windings are connected via automatic circuit breakers to two three-phase lines of main switchboard. Inputs of 12-pulse rectifiers are connected to lines of the main distribution board, to the output of which inputs of independent voltage inverters are connected, to the output of which there connected are propulsion motors. Primary windings of three-phase transformers are connected to each main switchboard line through automatic circuit breakers, and secondary windings of these transformers are connected through automatic circuit breakers to three-phase supply line of distribution board of other ship consumers. On the synchronous generator stator there are two additional three-phase windings shifted relative to the first pair of three-phase stator windings by 15 electric degrees and relative to each other by 30 electric degrees, which outputs are connected through automatic circuit breakers to two additional three-phase lines of the main distribution board, to which inputs of additional 12-pulse rectifiers are connected. Outputs of main and additional 12-pulse rectifiers are connected to inputs of three-level independent voltage inverters supplying propulsion motors.

EFFECT: high efficiency is achieved.

1 cl, 1 dwg