A bi-directional dc-dc converter with minimum energy storage elements

Leon M. Tolbert, William A. Peterson, Cliff P. White, Timothy J. Theiss, Matthew B. Scudiere

Research output: Contribution to journalConference articlepeer-review

21 Scopus citations

Abstract

A proof-of-concept military advanced mobile generator set has been developed. The military generator set uses an internal combustion diesel engine to drive a radial-gap permanent magnet alternator at variable speed. The speed of the engine is determined from a user selectable interface that for a given load and ambient thermal conditions controls the engine to run at its most efficient operating point. The variable frequency, variable voltage produced by the permanent magnet alternator is diode-rectified to a high voltage (∼400 V) dc link, and an inverter is used to produce selectable frequency, controllable ac voltage. As part of the power electronics for this unit, a 7 Kw bi-directional dc-dc converter has also been developed. The converter can charge 24 V batteries that are used to start the internal combustion engine and to power auxiliary low voltage dc loads. Additionally, the bi-directional converter can also draw power from the batteries to help maintain the high voltage dc link during severe load transients. Because of stringent weight and volume requirements for this application, the minimum in energy storage elements (high frequency transformers, capacitors, and inductors) was used. This paper presents a description and experimental analysis of this novel dc-dc converter design.

Original languageEnglish
Pages (from-to)1572-1577
Number of pages6
JournalConference Record - IAS Annual Meeting (IEEE Industry Applications Society)
Volume3
StatePublished - 2002
Event37th IAS Annual Meeting and World Conference on Industrial applications of Electrical Energy - Pittsburgh, PA, United States
Duration: Oct 13 2002Oct 18 2002

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