Advanced Medium-Voltage, High-Power Charging Converter for Pulsed Power Applications Navy SBIR FY2011.3 Sol No.: Navy SBIR FY2011.3 Topic No.: N113-181 Topic Title: Advanced Medium-Voltage, High-Power Charging Converter for Pulsed Power Applications Proposal No.: N113-181-0120 Firm: Diversified Technologies, Inc. 35 Wiggins Ave. Bedford, Massachusetts 01730-2345 Contact: Robert Phillips Phone: (781) 275-9444 Web Site: www.divtecs.com Abstract: Commercially available capacitor-charging supplies have power densities in the range of 200-300 kJ/s/m3, and are typically rated for a 30 kW average charging rate or less. Over 200 of these units would be needed to charge a 50 MJ bank in eight seconds, and would occupy a total volume of over 20 cubic meters - not including the mounting enclosures required for power connections, HV feeds, and cooling manifolds. Diversified Technologies, Inc. (DTI) currently produces the PowerMod series of high-voltage power supplies, producing output voltages from 10 kV to 200 kV from 480 VAC input power. These commercial power supplies provide some of the highest power densities available for a DC supply - up to 200 kW/m3. Our analysis shows that this design could be modified to support up to 400 kJ/s peak charging capability, and over 300 kW of average power. This existing power supply provides an optimal starting point for the charging Power Converter development proposed. Benefits: DTI's development of a compact, high density capacitor charging Power Converter will feed several initiatives in the future. First, it represents a significant expansion of DTI's existing power supply product range, both in functionality and form factor. DTI does not currently build a dedicated capacitor charging Power Converter - in the few cases where we have needed to provide this capability; we have simply derated a DC power supply. The compact design of this Power Converter also offers the potential to drive our DC power supplies into more compact designs, which will benefit a range of military, industrial, and high energy physics customers- all of whom would benefit from more compact power supplies. Return