L z -Transform Approach for Comparison of Different Schemas of Ships’ Diesel-Electric Multi-Power Source Traction Drives

This chapter investigates the L_z-transform is applied to analyze a real multi-state system multi-power source traction drive that functions under different weather conditions, and its availability, power performance, and power performance deficiency. The multi-state model for the multi-power source traction drive may be presented as a diesel-generator subsystem connected in series, a main switchboard, an electrical energy converter and electric motor subsystem, and a fixed pitch propeller. A diesel-generator subsystem for a ship's conventional diesel-electric traction drive consists of four pairs of identical diesel engines and generators connected in parallel. Each subsystem consists of a diesel-generator subsystem, a main switchboard, an electrical energy converter, and an electric motor. The diesel-generator subsystem for a ship's alternative diesel-electric traction drive consists of various pairs of identical diesel engines and generators connected in parallel. The power performance deficiency for the multi-power source traction drives for both schemas is also the same for the winter and summer periods.