For the past four years, Advanced Surface Machinery Programs (SEA 03R2) has been developing the Integrated Power System (IPS) to reduce ship acquisition and life cycle costs while still meeting all ship performance requirements. IPS provides electrical power to ship service loads and electric propulsion for a wide range of ship applications including surface combatants, aircraft carriers, amphibious ships, auxiliary ships, sealift and high value commercial ships. IPS consists of an architecture and a family of modules from which affordable and high performance configurations can be developed for the full range of ship applications. Two years ago, the initial IPS concepts were presented at ASNE Day 1994. Since then, much has been learned through the Reduced Scale Advanced Development (RSAD) and Full Scale Advanced Development (FSAD) programs. This paper describes the fundamental IPS architecture, details the evolving “family of modules” and their interface standards, and outlines the “Mass Customization” based design process for achieving customer performance requirements with an affordable IPS configuration.
The higher specific fuel consumption of present Navy gas turbine generators, when compared to main propulsion gas turbines, has led to the investigation of propulsion‐derived ship service electrical power. Variations in propulsion engine speed require that a generator provide constant frequency with a variable input shaft speed. A fuel use analysis has been conducted of the application of a variable speed constant frequency (VSCF) generator to a four gas turbine twin shaft destroyer. Other considerations are the quality of ship service power with the introduction of power electronics to the generating system and the impact of the new components on system weight, volume, and survivability. Propulsion‐derived ship service utilizing VSCF generators offers to provide substantial benefit to Navy combatant ships through the application of proven technology.
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