| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide electric propulsion apparatus to prevent the battery running-out in the ship navigation without enlarging the capacity of the storage battery equipment (installation space and weight). <P>SOLUTION: The electric propulsion apparatus for ship that charges a storage battery 3 in the ship from a land power supply 8 and drives a propulsion electric motor 2 by the electric power, the propulsion electric motor 2 is driven by obtaining the power consumption upper limit value of the propulsion electric motor to reach the destination from either a first group data comprising the distance S1 to the destination of the ship, the speed planning value v1, the power consumption planning value P1 of the propulsion electric motor, or the second group data comprising the distance S2, the speed v2, a power consumption P2 of the propulsion electric motor 2 measured by GPS 28 and an electric power detector 32, and the battery remaining amount A1 of the storage battery, obtaining a torque distributed current upper limit value IqLIM by dividing the electric power upper limit value by the voltage applied to the propulsion electric motor 2, and limiting the torque distributed current command value Iq * of the propulsion electric motor set by a propulsion indicator so as not to exceed the torque distributed current upper limit value IqLIM. <P>COPYRIGHT: (C)2013,JPO&INPIT |
