| 摘要 |
<p>A ship propulsion system mounted on a ship is configured so as to minimize influence on the speed of the ship, the influence being caused by a variation in a load on a shaft generator. Provided is a ship propulsion system mounted on a ship which comprises a shaft generator connected to a propulsion shaft for connecting a vapor turbine and a propeller. The ship propulsion system comprises: a control valve which is provided in supply piping for supplying vapor to the vapor turbine and which controls the amount of supply of the vapor; and a control device which determines the amount of operation of the control valve. The control device comprises: a first calculation section (11) which calculates a first operation amount (V1) for matching the actual rotational speed of the propeller with a rotational speed command for the propeller; a second calculation section (12) which calculates a second operation amount (V2) on the basis of a shaft generator output command value determined from load conditions within the ship; and an adder (13) which obtains a third operation amount (V3) by adding the first operation amount (V1) and the second operation amount (V2). The ship propulsion system controls the control valve on the basis of the third operation amount (V3).</p> |
