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dc.contributor.authorUrciuoli, Damianen_US
dc.date.accessioned2014-03-14T20:42:51Z
dc.date.available2014-03-14T20:42:51Z
dc.date.issued2003-08-04en_US
dc.identifier.otheretd-08062003-155713en_US
dc.identifier.urihttp://hdl.handle.net/10919/34378
dc.description.abstractWith the development of fuel cell based power systems, the need for more advanced DC-DC power converters has become apparent. In such applications DC-DC converters provide an important link between low voltage fuel cell sources and inverter buses operating at significantly higher voltages. Advancements in converter efficiency, cost reduction, and size reduction are the most necessary. These challenges are formidable, even when considering the improvements made to conventional DC-DC topologies. However, it can be possible to achieve these criteria through the implementation of more advanced topologies. A recently developed efficient three-phase DC-DC topology offers benefits over standard designs. Passive component sizes and output ripple voltage were reduced as a result of an effective boost in switching frequency. Converter output voltage was reached more easily due to an increased transformer voltage boost ratio in addition to the turns ratio. For cost reduction, the converter was designed and built with discrete components instead of more expensive integrated modules. This thesis presents an overview of the three-phase converter, with a detailed focus on the design, implementation, and performance of the switching stage. The functionality of the three-phase topology is covered along with the selection of converter components. Simulation results are shown for both ideal and real converter models. Considerations for the switching device package with respect to circuit board and heat sinking configurations are discussed in support of the selection of an insulated metal substrate (IMS) circuit board. An effective circuit layout designed to minimize parasitic trace inductances as well as provide favorable component positioning is presented. Experimental converter test results are shown and the causes of undesired effects are identified. Switching stage modifications and their results are discussed along with the benefits of proposed future design enhancements.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartThesis2.pdfen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectDC-DCen_US
dc.subjectthree-phaseen_US
dc.subjectMOSFETen_US
dc.subjectinsulated metal substrateen_US
dc.subjectswitching stageen_US
dc.titleSwitching Stage Design and Implementation for an Efficient Three-Phase 5kW PWM DC-DC Converteren_US
dc.typeThesisen_US
dc.contributor.departmentElectrical and Computer Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineElectrical and Computer Engineeringen_US
dc.contributor.committeechairLai, Jih-Sheng Jasonen_US
dc.contributor.committeememberDe La Ree Lopez, Jaimeen_US
dc.contributor.committeememberDavis, Bradley A.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-08062003-155713/en_US
dc.date.sdate2003-08-06en_US
dc.date.rdate2004-08-14
dc.date.adate2003-08-14en_US


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