Exam Question
Draw and explain the working of a typical Diesel Electrical Propulsion system. Also explain the advantages and disadvantages of such a system over the conventional two stroke engine propulsion system.
Class 2 (2nd Engineer)
MEKM
📅 Dec 2025
Reference Answer
Working of a typical Diesel Electrical Propulsion system:
Electrical propulsion systems in merchant vessels replace the conventional main diesel engine with electric motors as the prime movers for the propeller. The system generally involves diesel generators (or gas turbines) producing electrical power, which is then supplied through transformers, converters, and advanced control systems to high-voltage propulsion motors. These motors directly drive the propeller shaft, thereby eliminating the need for a direct mechanical link between the prime mover and the propeller.
Components of an Electrical Propulsion System:
Diesel generators or gas turbines (prime movers for electricity generation).
Electrical propulsion systems in merchant vessels replace the conventional main diesel engine with electric motors as the prime movers for the propeller. The system generally involves diesel generators (or gas turbines) producing electrical power, which is then supplied through transformers, converters, and advanced control systems to high-voltage propulsion motors. These motors directly drive the propeller shaft, thereby eliminating the need for a direct mechanical link between the prime mover and the propeller.
Components of an Electrical Propulsion System:
Diesel generators or gas turbines (prime movers for electricity generation).
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