High Efficiency and High Power Quality Electrical Power Conversion Navy SBIR FY2008.2 Sol No.: Navy SBIR FY2008.2 Topic No.: N08-181 Topic Title: High Efficiency and High Power Quality Electrical Power Conversion Proposal No.: N082-181-0793 Firm: Diversified Technologies, Inc. 35 Wiggins Ave. Bedford, Massachusetts 01730 Contact: Neal Butler Phone: (781) 275-9444 Web Site: www.divtecs.com Abstract: Diversified Technologies, Inc. (DTI) has been a pioneer in the development and deployment of high voltage DC power supplies and pulsed power systems based on series and parallel combinations of conventional silicon based devices, such as IGBTs. In this SBIR, DTI proposes to apply and extend its power supply and switching technologies to develop high voltage / high power converters that will meet the requirements of this SBIR, using combinations of power converter modules based on commercially available devices to accommodate input prime power at 4160 to 13.8 kV AC or 6 kV DC at multi-MW power levels. Under this SBIR effort, DTI proposes to analyze several candidate architectures to achieve this goal, and characterize one or more of these architectures. Approaches to maximize power conversion efficiency while minimizing weight and volume will be investigated. In Phase I, DTI will investigate various architectures to achieve the power conversion goals of this topic, and provide analytical and experimental data to support further architectural optimization. Benefits: In this SBIR, DTI proposes to build on its existing solid-state technology to demonstrate the key elements of future medium voltage power converter design - for both military and commercial power distribution systems. Improving the efficiency of our present power supply switching technology and placing whole converter sections in series will provide for much higher flexibility in power distribution, control, and overall reliability. As new devices, such as SiC become available, the same designs will allow their direct transition into future power converters, bringing even another level of efficiency and power density into operation. Return