PERENCANAAN SISTEM PROPULSI ELEKTRIK PADA FAST PATROL BOAT 28 METER

Muhammad Ferdiansyah Wibowo; Raden Dimas Endro W; Anggara Trisna Nugraha

Muhammad Ferdiansyah Wibowo
Raden Dimas Endro W
Anggara Trisna Nugraha

Keywords: Patrol Boats, Electric Propulsion Systems, DC Electric Motors, Batteries

Abstract

Selection of the propulsion system is one of the basic considerations in designing a ship. To
reduce fuel use, the researchers re-planned the mechanical propulsion system into an electric
propulsion system on the ship. The research object is a 28 M fast patrol boat with a speed of 25 knots
in full (MCR) conditions, 22 knots in patrol conditions and 15 knots in economical conditions. The
electric motor used is a PRAXIS DC EMG-820d-7751 motor with 1457 kW of motor power supplied
from a battery that is charged from the shore port. Simulation using MatLab by modeling the motor
and propeller to find the value of torque, thrust and advance speed. The power prediction between the
motor and the propeller in the graph below can be seen that the motor power can match the power
required by the propeller in the condition of 52,388 % power and 100 % speed of the DC motor by
adjusting the input voltage to the motor so that it affects the motor speed. The speed of the ship can
reach 25 kNots, namely in clean hull conditions of 25 kNots and in rough hull conditions it does not
meet the speed requirement of 24 kNots