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dc.contributor.authorSuperczynski, Matthew J.en_US
dc.date.accessioned2014-03-14T20:44:32Z
dc.date.available2014-03-14T20:44:32Z
dc.date.issued2000-07-24en_US
dc.identifier.otheretd-08312000-16220053en_US
dc.identifier.urihttp://hdl.handle.net/10919/34860
dc.description.abstractSuperconducting Magnetic Energy Storage (SMES) has branched out from its application origins of load leveling, in the early 1970s, to include power quality for utility, industrial, commercial and military applications. It has also shown promise as a power supply for pulsed loads such as electric guns and electromagnetic aircraft launchers (EMAL) as well as for vital loads when power distribution systems are temporarily down. These new applications demand more efficient and compact high performance power electronics. A 250 kW Power Conditioning System (PCS), consisting of a voltage source converter (VSC) and bi-directional two-quadrant DC/DC converter (chopper), was developed at the Center for Power Electronics Systems (CPES) under an ONR funded program. The project was to develop advanced power electronic techniques for SMES Naval applications. This thesis focuses on system analysis and development of a demonstration test plan to illustrate the SMES systems' ability to be multitasked for implementation on naval ships. The demonstration focuses on three applications; power quality, pulsed power and vital loads. An integrated system controller, based on an Altera programmable logic device, was developed to coordinate charge/discharge transitions. The system controller integrated the chopper and VSC controller, configured applicable loads, and dictated sequencing of events during mode transitions. Initial tests with a SMES coil resulted in problems during mode transitions. These problems caused uncontrollable transients and caused protection to trigger and processors to shut down. Accurate models of both the Chopper and VSC were developed and an analysis of these mode transition transients was conducted. Solutions were proposed, simulated and implemented in hardware. Successful operation of the system was achieved and verified with both a low temperature superconductor here at CPES and a high temperature superconductor at The Naval Research Lab.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartThesis_final.pdfen_US
dc.rightsI hereby grant to Virginia Tech or its agents the right to archive and to make available my thesis or dissertation in whole or in part in the University Libraries in all forms of media, now or hereafter known. I retain all proprietary rights, such as patent rights. I also retain the right to use in future works (such as articles or books) all or part of this thesis or dissertation.en_US
dc.subjectSuperconductivityen_US
dc.subjectNavalen_US
dc.subjectChopper Voltage source inverteren_US
dc.subjectMagnetic energy storageen_US
dc.subjectSMESen_US
dc.subjectPower Electronicsen_US
dc.titleAnalysis of the Power Conditioning System for a Superconducting Magnetic Energy Storage Uniten_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.committeechairBoroyevich, Dushanen_US
dc.contributor.committeememberHuang, Alex Q.en_US
dc.contributor.committeememberLee, Fred C.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-08312000-16220053/en_US
dc.date.sdate2000-08-31en_US
dc.date.rdate2001-09-04
dc.date.adate2000-09-04en_US


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