EXWC Projects

Naval Facilities Engineering and Expeditionary Warfare Center (EXWC) Projects

APTEP Triangle - Technology



Advance Power Electronics for Photovoltaics

Advanced power electronics has reduced the size and cost of PV inverters, while enabling increased functionality.
The objective of the project is to evaluate the functionality of the Ideal Power Converter (IPC) converter as a PV inverter and as a electric vehicle charger. A 30 kW IPC inverter was installed, replacing six older inverters, illustrating the higher energy density of the newer hardware. The IPC converter was then configured for bi-directional battery charging and integrated into a DC level II fast charger.

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Building-Integrated Photovoltaics Demonstration

Building-Integrated Photovoltaics (BIPV) are an alternative to conventional rack/frame mounted PV panels. They are photovoltaic materials which are incorporated into buildings, typically on the roof. They are increasingly used in new construction as the primary or ancillary source of electrical power or potentially for building retrofits.
The mission of the project is to test and compare copper indium gallium selenide (CIGS) flexible thin film, BIPV photovoltaics to traditional frame mounted panels.

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DC Micro-grid with Solid State Lighting

The DC micro-grid controller with solid state lighting improves grid performance and resiliency by reducing AC/DC conversions by combining renewable generation and energy storage in a DC micro-grid. This new approach manages power between DC devices such as LEDs and computers, PV and battery storage, with the ability to operate grid connected or islanded mode.
The project evaluates a small 30 kW DC micro-grid controller for building-level power management.

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LIDAR Wind Measurement Experiments

A ground-based aerosol LIDAR (LIght Detecting And Ranging) is a remote sensing instrument that measures wind speed and direction at different heights within the lower Atmospheric Boundary Layer.
This project seeks to evaluate an aerosol LIDAR and transition it for use in wind energy cost/benefit analysis.

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Liquid Air Energy Storage Study

Liquid Air Energy Storage (LAES) is a utility scale energy storage technology >10 MW that utilizes commercial off-the-shelf equipment to generate and store liquified air.
The project will look at siting the technology next to a 5 MW peaker plant to utilize the waste heat and model the expected round-trip efficiency of the LAES technology.

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Modular Micro Grid with Energy Storage

The ability to provide a reliable and resilient energy supply are vital requirements and critical operations need a dependable energy system such as the modular micro grid system.
The system ensures power is provided to critical loads during grid outages by utilizing the energy generated from and exisiting PV system that currently is designed to drop off line during grid outages.

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Roof Top Unit (RTU) Challenge

The Department of Energy (DoE) had challenged U.S. manufacturers to build and deliver innovative, competitively priced, energy-saving rooftop units that meet the Commercial Building Energy Alliance (CBEA) driven requirements for high-efficiency A/C specification. The challenge intends to realize large energy savings with acceptable return on investment (ROI).
The objective of this project is to establish baseline cooling and heating energy use at a selected facility at NAS Key West, and install the replacement RTUs from the two manufacturers participating in the DoE RTU Challenge Program.

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Shroud with RF Mesh to Suppress Radar Cross-section of Small Wind Turbine

A wind turbine with a shroud and screens can suppress echoes created by the rotation of the wind turbine blades. These echoes are mistaken for targets of interest by search and track radar systems, and decrease radar sensitivity and degrade radar performance.
This project is developing two shroud concepts to suppress Doppler-filtered radar cross-section (RCS) of wind turbine (WT) rotors.

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Validate SIREN Computer Modeling

SIREN (Simulated Integration of Renewable Energy Net-works) is a computer program for planning and dynamic analysis of renewable energy integrated into the electrical grid. A combination of wind turbines, solar panels, diesel generators, and energy storage are modeled to determine the amount and cost of the renewable penetration.
This project will further develop SIREN software models with an emphasis on applications of energy storage and introduction of new functionality to study the effect of critical weather events.

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