Towards a Fully Modular Power System Architecture for DC-DC Converters

Abstract

The public reporting burden for this collection of information is estimated to average 1 hour per response, inPcluding the time for reviewing istructons, searching existing data sources, gathering and maintaining the data needed, ard completing and revrewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing the burden, to Department of Defense, Washington Headquarters Services, Directorate for Information Operations and Reports (0704-0188), 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subpect to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. Fully modular power system architecture for dc-dc conversion, where low-power, low-voltage (input and output) building block dcdc converters can be connected in any combination of series/parallel configurations at the output and/or at the input sides, has several advantages including increased reliability, standardization of design and components, higher power density and efficiency. An important component of such architecture is the autonomous, input series configuration with active input voltage and load current sharing, towards which this research project has made significant contributions. The major research tasks accomplished in this project are: 1. Development of control methods for input-series and output-series (ISOS) configuration with active voltage sharing; 2. Development of input-voltage share bus scheme for input-series, output parallel (ISOP) connection that makes the converter modules self-contained and identical, leading to fault tolerant capability; 3. Study on magnetic approaches to inputvoltace sharing for input-series connected convertersi and 4. development of interleaving techniQues for input series connected PLEASE DO NOT