TECHNOLOGY AREAS: Sensors, Electronics

ACQUISITION PROGRAM: PEO IWS 2.0, Major Program Manager, Above Water Sensors, Captain Lawrence C

The technology within this topic is restricted under the International Traffic in Arms Regulation (ITAR), which controls the export and import of defense-related material and services. Offerors must disclose any proposed use of foreign nationals, their country of origin, and what tasks each would accomplish in the statement of work in accordance with section 3.5.b.(7) of the solicitation.

OBJECTIVE: Design and develop low-cost, high efficiency, high power density, fast transient response, DC/DC converters with low output capacitance for pulsed current loads supporting high power radar applications.

DESCRIPTION: Higher peak and average power levels of future Navy active array radar systems require significant advancement in technologies to achieve reductions in antenna weight, size, and cost while providing significantly higher power per unit volume than present commercial technologies. Future requirements are expected to stress fast transient response, isolated DC/DC converters for pulsed current loads while minimizing output voltage bulk storage capacitor requirements. Advancements are required in the development of power conversion technologies and assemblies including isolated DC/DC converters with significantly lower noise, cost, and weight, fast transient response, low overshoot and output voltage droop, higher efficiency, and higher power density. Goals for the fast transient response 300V input, 28V output isolated DC/DC converter include output power greater than 1kW, efficiency greater than 90 percent, power density greater than 200W per cubic inch, response time less than 10 microsecond, settling time less than 10 microseconds, overshoot less than 4 percent, base plate temperature 70C, and thickness less than 10mm. Isolated DC/DC converter with innovative switching low loss switching topologies, advanced control loop design, low internal and output inductance, high slew rate output, and advanced component technologies are of interest. DC/DC converters incorporating advanced low loss switches, low inductance high common-mode isolation transformer, low loss inductors, advanced thermally enhanced board, and advanced control loop design are of interest.

PHASE I: Identify potential new and innovative research and development approaches to meet the power conversion needs discussed in this topic. Develop and design a conceptual fast responding isolated DC/DC converter for pulsed current loads and perform supporting analysis and critical technology demonstrations, if required.

PHASE II: Develop a prototype DC/DC converter for pulsed current loads based upon the Phase I design effort. Demonstrate the capability of the converter under pulsed load conditions and also demonstrate commercial viability of the proposed converter.

PHASE III: Develop pre-production and production components and sub-systems for integration into radar systems.

PRIVATE SECTOR COMMERCIAL POTENTIAL: These technologies could be applied in many power applications such as the telecommunications industry, commercial airport radar systems, and automotive industry.

REFERENCES:
1. Mohan, Undeland, and Robbins, Power Electronics: Converters, Applications, and Design, New York, John Wiley & Sons, 1995.

2. M. Brown, Power Supply Cookbook, Butterworth-Heinemann, Newton, MA, 1994.

3. R. W. Erickson, Fundamentals of Power Electronics, New York, Chapman and Hall, 1997.

4. D. M. Mitchell, DC-DC Switching Regulator Analysis, New York, McGraw-Hill, 1988.

5. A. Kislovski, R. Redl, and N. Sokal, Dynamic Analysis of Switching-Mode DC/DC Converters, New York, Van Nostrand Reinhold, 1994.

6. McGee, B.R.; Nelms, R.M. "Powering solid state radar T/R module arrays from a fuel cell using an isolated Cuk converter, " Applied Power Electronics Conference and Exposition, 2004. APEC '04. Nineteenth Annual IEEE, Volume 3, 2004 Page(s):1853 � 1857, 2004.

KEYWORDS: radar, phased array, power, power conversion, energy storage, DC-DC converter, fast transient response, pulse current load

** TOPIC AUTHOR (TPOC) **

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