DESIGNING ALL ELECTRIC SHIPS

The Integrated Power System (IPS) offers the naval architect considerable flexibility to achieve mission requirements at minimum cost. This flexibility results from the ability to separate the prime movers from the propulsion train, maximize efficiency of prime movers and propulsors, and optimize the number and rating of prime movers. Unfortunately, many naval architects are unfamiliar with how to exploit this flexibility, resulting in unfavorable comparisons with mechanical drive alternatives. This paper will provide guidance for selecting the number and rating of IPS modules and incorporating these modules into the design of ships. Often, the resulting general arrangements for an optimally designed IPS ship will differ significantly from an optimally designed mechanical drive ship.