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High Efficiency and High Power Quality Electrical Power Conversion
Navy SBIR 2008.2 - Topic N08-181 NAVSEA - Mr. Dean Putnam - [email protected] Opens: May 19, 2008 - Closes: June 18, 2008 N08-181 TITLE: High Efficiency and High Power Quality Electrical Power Conversion TECHNOLOGY AREAS: Ground/Sea Vehicles ACQUISITION PROGRAM: PMS 502, CGX Program, ACAT I pre AoA OBJECTIVE: To develop a set of flexible and adaptive power modules that can be easily tailored to future surface combatant shipboard medium voltage systems and provide the power quality necessary for high power weapons systems in an efficient, power dense, low cost, and modular manner. DESCRIPTION: Future Navy combatants will have a variety of system loads with varying voltage/current and power quality requirements. This topic addresses the development of power conversion units (incorporating advanced power switching devices and passive components) for use in a high quality of service application. The goal is to provide improved electrical power quality in a highly reliable manner where critical electric loads do not experience loss of source power during higher level power system fault conditions. As next-generation integrated power system architectures evolve, the shipboard high voltage bus that this power conversion unit connects to may be set at a variety of voltage levels, including 4160-13,800VAC at frequencies between 60 and 400Hz or up to 6kVDC. The power conversion unit developed by this topic will have to be adaptable to match the chosen voltage levels, with minimal changes necessary for each voltage level identified above. Present power electronics technology is able to satisfy most shipboard electrical performance requirements, but does so at a reduced power quality than high power combat systems require, necessitating the need for multiple levels of power conversion and conditioning. Concept proposed should be able to produce high-power quality at voltages adjustable between 800 to 1000VDC and should be scalable up to 6MW. Concepts should also address the ability to easily adapt to the various input voltages, the ability to convert power efficiently, the ability to provide quality power, the ability to provide reliable power, and input to output galvanic isolation. Performance goals will be as follows, but improvements over these goals are desirable: PHASE I: Demonstrate the feasibility of the development of a set of flexible and adaptive power modules to meet the defined performance objectives. The concept design should be in sufficient detail to estimate the size, weight, and cost of the converter. Assess the impact of meeting goals in terms of size, weight and cost and identify if there are any break-points between minimum requirements and goal requirements relative to size, weight, and cost. Specific requirements for size, weight and cost are not available at this time but size, weight and cost are important and will be factors in selecting concepts for further development. Assess the impact of the variety of input voltage levels and the level of modularity attainable on the concept design. Modeling and simulation as well as three-dimensional computer aided design are encouraged to demonstrate the performance and feasibility of proposed approaches. Develop a test and evaluation plan that contains discrete milestones for product development for verifying performance and suitability. PHASE II: Develop and demonstrate the prototype(s) as identified in Phase I. Through system simulations, demonstrate and validate the performance goals as established in Phase I. Refine and demonstrate the capabilities of the system. Develop a cost benefit analysis and a Phase III testing and validation plan. PHASE III: The small business will work with the Navy and commercial industry to transition a final system that is modular to accommodate various shipboard power system architectures. The small business will participate in an integrated product team environment to develop the detailed interfaces require to integrate the converter with the power system and the combat systems loads. PRIVATE SECTOR COMMERCIAL POTENTIAL/DUAL-USE APPLICATIONS: These approaches could be used in any system where high power density power converters are used � electric vehicles, aircraft power system, distributed generation (wind energy) among others. REFERENCES: 2. Shipboard Implementation of US Navy�s Integrated Fight Through Power and Planned Open Control System Architecture; Hegner, H.; Spivey, N; Cherry, J; Desai, B; 2005 Proceedings of the All Electric Ship Conference, Paris, France. 4. Power Electronics Building Blocks and potential power modulator applications; Ericsen, T.; Tucker, A.; Power Modulator Symposium, 1998. Conference Record of the 1998 Twenty-Third International 22-25 June 1998 Page(s):12 - 15. 5. Design and technology of compact high-power converters; Shenai, K.; Neudeck, P.G.; Schwarze, G.; Energy Conversion Engineering Conference and Exhibit, 2000. (IECEC) 35th Intersociety Volume 1, 24-28 July 2000 Page(s):30 - 36 vol.1. 6. Three-Dimensional Packaging for Power Semiconductor Devices and Modules; Calata, J.N.; Bai, J.G.; Xingsheng Liu; Sihua Wen; Guo-Quan Lu; IEEE Transactions on Advanced Packaging; Aug. 2005 Page(s): 404 � 412. 7. Assessment of medium voltage PWM VSI topologies for multi-megawatt variable speed drive applications; Shakweh, Y.; Lewis, E.A.; Power Electronics Specialists Conference, 1999. Volume 2, 27 June-1 July 1999 Page(s):965 - 971 vol.2. KEYWORDS: Quality of service; power electronics; power distribution; semiconductor devices; propulsion system components.
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