Approved for public release; distribution is unlimited. / As the navy transitions to all electric warships, there will be many changes to the power distribution schemes found aboard ships today. It will be necessary to maintain reliability while supplying the various components onboard with the proper voltage levels. Since transformers cannot be used to alter voltage levels while providing galvanic isolation in DC power systems, it is necessary to find an efficient method to incorporate the increased safety provided by galvanic isolation in a DC power distribution system. This thesis examines the design and control of one possible element for a future Electrical Distribution System (EDS), a DC-DC converter with galvanic isolation. The main purpose of this study is to provide a working model with associated theoretical proof and simulations. MATLAB will be used to provide observations of the converter's operation and the success of the control scheme implemented. Future work on this topic will be assisted by the inclusion of a parts list as well as recommendations for enhancing the prospects of this technology. / Ensign, United States Navy

Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, June 2003. / Thesis advisor(s): Robert W. Ashton, Todd R. Weatherford. Includes bibliographical references (p. 83-84). Also available online.

Thesis (Ph. D.)--Virginia Polytechnic Institute and State University, 1994. / Vita. Abstract. Includes bibliographical references (leaves 288-308). Also available via the Internet.

Thesis (Ph.D.)--University of Central Florida, 2007. / Adviser: Issa Batarseh. Includes bibliographical references (p. 144-154). Also available in print.

Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2004. / Includes bibliographical references. Also available in electronic version. Access restricted to campus users.

Thesis (Ph. D.)--University of Hong Kong, 1993. / Includes bibliographical references.

Thesis (M.S.)--University of Missouri-Columbia, 2004. / Typescript. Includes bibliographical references (leaf 64). Also available on the Internet.

Thesis (M.S.)--University of Missouri-Columbia, 2004. / Typescript. Includes bibliographical references (leaf 64). Also available on the Internet.

Thesis (M.Phil.)--Hong Kong University of Science and Technology, 2006. / Includes bibliographical references. Also available in electronic version.

M.Ing. / The need for efficient, power dense, high frequency DC-DC converters is becoming more important in applications such as on board voltage regulation modules for low voltage microprocessors as well as the interconnection system of the two parallel DC-busses present in future automobiles. These applications have a few basic criteria in common, namely, that they exhibit a low voltage conversion ratio, demand a high power capability as well as a high power density and have no explicit need for galvanic isolation. For applications that fit this description, a new innovative conversion system is presented and critically evaluated against similar converters on the bases of efficiency and component rms currents. The comparison involves four such DC-DC converters, from which two are new topologies brought about by the new innovative system configuration. Generalised analytical results, alongside practically verified results, are presented for each converter topology. A detailed design also accompanies each converter topology. The results show that significant gain can be achieved from the new innovative conversion system above currently implemented DC-DC converters in the fields of switch and passive component rms currents as well as power density and efficiency. This gain is shown to come at the cost of increased complexity and the loss of galvanic isolation.