Modeling and Simulation of Electric Propulsion Systems for All-Electric Cruise Liners

Abstract

Electric propulsion for cruise liners has now become a standard owing to its several advantages. However propulsion drives have a large impact on the ship power system. This gives rise to the requirement for designers to understand in depth the effects of propulsion drives on the ship network in different operating conditions. For this purpose computer simulations have proved to be a very useful tool.In the paper a typical propulsion drive for an all-electric cruise liner is described and simulation results are shown. Owing to the model complexity, simulations turn out to be computationally quite heavy. For this reason a simplified model has been developed. Simulation results, from the ship network viewpoint, proved to be close to the detailed model ones.Index Terms-Marine vehicle propulsion, harmonic distortion, simulation software, Load Commutated Inverter (LCI), doublethree phase synchronous motor.

A Review of DC Shipboard Microgrids—Part I: Power Architectures, Energy Storage, and Power Converters

“…The load-commutated inverter (LCI), as one typical topology of CSIs, is widespread in the speed controller of synchronous motors for large ship propulsion [87], [88]. The configuration of LCI-fed drive system is shown in Fig.…”

Study of current ripple characteristics of inverter-fed multiple three-phase AC motors

“…The detail of the motor current ripple derivation can refer to [35]. The current ripple in the 𝛼𝛽 coordinate of sixphase motor is in (6) and the current ripple in the 𝑥𝑦 coordinate is in (7). The current ripple of nine-phase motor in the αβ coordinate is in (8) and the current ripple in the 𝑥𝑦 coordinate is in (9).…”

A review of power electronics equipment for all-electric ship MVDC power systems

“…Among the high power converters reviewed in [93][94][95] the SCR-based ones (i.e. LCIs and cycloconverters) offer the advantage of a well-known and established technology, commonly employed for instance for cruise ship propulsion [97]. However, the requirement of an AC supply makes them not suitable for ships with MVDC power system.…”