ELECTRIC PROPULSION DEVICE FOR SHIP, AND PROPULSION FORCE CONTROL DEVICE USED IN ELECTRIC PROPULSION DEVICE FOR SHIP

摘要

The purpose of the present invention is to reduce energy loss occurring during navigation of a ship and to efficiently control propulsion force. Provided is an electric propulsion device (10), wherein in a first control mode, a governor control unit (35A) maintains the speed of an engine 33 at a first set speed N1 (750 min^-1), and a CPP control unit (35B) variably controls the pitch of a CPP (31) so as to meet a target pitch. Also, in a second control mode, the CPP control unit (35B) maintains the CPP (31) at a reference pitch αa, and the governor control unit (35A) controls the speed of the engine (33) within an engine speed range from the first set speed N1 to a second set speed N2 (900 min^-1)) so as to follow a characteristic curve (L1) for a ship.