Continuous ship power supply from the propulsion network at alternating current ship drive of a vaiable frequency and partial frequency converter

摘要

1. Arrangement for the board mains supply in a polyphase alternating current ship's drive of variable frequency with a propulsion generator (3) driven by a primary energy converter (2), a starting-up inverter (5 to 8) and a propeller motor (1) fed at a constant ratio of voltage to frequency, wherein the propeller motor (1) is connected - in a lower rotational speed range at constant minimum rotational speed of the primary energy converter (2) - by way of the starting-up inverter (5 to 8) and - in the range above the minimum rotational speed - directly with the propulsion generator (3) in the manner of an electrical shaft, characterized by an arrangement for the continuous energy supply for the board mains by the primary energy converter (2), wherein board mains frequency and voltage are supplied in the lower rotational speed by the propulsion generator (3) by way of a transformer (4) between propulsion rail and board mains rail or from a further generator (9) coupled to the propulsion generator (3) and wherein - in the range above the minimum rotational speed - the starting-up inverter (5 to 8) is separated from the propeller motor (1) and connected with the interposition of a synchronous phase changer (12) to the board mains.