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Electric Ships Office

Program Summary

In 2007, the Assistant Secretary of the Navy, Research Development and Acquisition (ASN (RDA)) established the Electric Ships Office (ESO), PMS 320, within Program Executive Office (PEO) Ships to facilitate the high degree of technical integration with ship platforms and power systems, scope future technology development, and support critical concept decisions. 320 Charter

Today, ESO is responsible for developing Naval Power and Energy Systems that focus on power system integration of Directed Energy (DE) and other high powered mission systems as well as platform integration, and improving energy efficiency of those components and systems. The mission of ESO is to develop and provide smaller, simpler, more affordable and more capable electric power systems for all Navy platforms, inform and guide Navy and industry investments, and reduce total ownership cost.

The U.S. Navy is faced with the challenge of meeting increasing demands for available electrical power and pulsed power to support advanced sensors and weapons while maintaining power quality to other shipboard users. The ESO is working across the Navy’s Research & Development Enterprise in partnership with industry to develop and introduce innovative technologies to enable the Navy’s distributed lethality principles through effective and efficient power & energy management.

The evolution of asymmetric threats requires new technology solutions for lethal and non-lethal shipboard mission systems. Several high energy sensor and weapon technologies will be introduced over the next several years to enhance mission capabilities, including:

Solid State Laser
  • Solid State Laser (SSL): High-power lasers are expected to provide a directed energy engagement element to augment the Navy’s Close-In Weapon System.

  • Electromagnetic Railgun (EMRG):</b> Delivers long-range, precision volume fires, increase stand-off range, and decreased time-to target.

  • Advanced Sensors: Fully integrates advanced materials, structures, and manufacturing technologies with sensor technology, electromagnetics, and signature reduction.

As new technologies are introduced the need for available power will increase, as will the demand for pulsed power and energy. To meet this need in support of the warfighter at the lowest possible cost, a fundamental paradigm shift from traditional separation of mission systems and ship systems to integrated power & energy architectures is required.

The ESO’s approach will deploy matured, appropriate architectures, systems and components to meet the emerging mission load requirements of existing and future ship acquisition programs. The technical approach employs common elements such as power conversion modules, power generation modules, energy storage modules and electric power control modules as enablers along an evolutionary development path. For backfit and forward fit applications within existing ship power systems this approach is known as the Energy Magazine (EM), while for new ship designs with new power system architectures approach is known as an Integrated Power & Energy System (IPES). These are briefly described below:

  • Energy Magazine (EM):
    A modular, scalable intermediate power and energy system made up of common building blocks to support multiple mission systems on various existing ship classes. EM generally consists of an appropriate input power interface, energy storage, DC output to support a mission system, and appropriate controls. An EM prototype is currently being designed and manufactured to be tested in FY 18 and will inform the development of future Integrated Power and Energy Systems. EM is more fully described in the Naval Power & Energy Systems Technology Development Roadmap.  NPES TDR

  • Integrated Power & Energy Systems (IPES): An advanced power system architecture that incorporates multi-use distributed energy storage as well as advanced controls and energy management. This provides a scalable architecture to support multiple future ship classes, including future surface combatants. This architecture is evolutionary from DDG 1000, and relies upon lessons learned from DDG 1000, LHD 8, T-AKE, UK Type 45, and other integrated electric drive / integrated power systems architectures. IPES enables energy sharing and manages system stability, resulting in simplified static and dynamic stability management over AC systems while enabling energy storage with different transient time constants, generator sets of different ratings to be paralleled, and does not require generators to remain in synchronism.

    Updated Dec 2016