Analysis of the Power Conditioning System for a Superconducting Magnetic Energy Storage Unit

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dc.contributor.authorSuperczynski, Matthew J.en
dc.contributor.committeechairBoroyevich, Dushanen
dc.contributor.committeememberHuang, Alex Q.en
dc.contributor.committeememberLee, Fred C.en
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessioned2014-03-14T20:44:32Zen
dc.date.adate2000-09-04en
dc.date.available2014-03-14T20:44:32Zen
dc.date.issued2000-07-24en
dc.date.rdate2001-09-04en
dc.date.sdate2000-08-31en
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
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-08312000-16220053en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-08312000-16220053/en
dc.identifier.urihttp://hdl.handle.net/10919/34860en
dc.publisherVirginia Techen
dc.relation.haspartThesis_final.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectSuperconductivityen
dc.subjectNavalen
dc.subjectChopper Voltage source inverteren
dc.subjectMagnetic energy storageen
dc.subjectSMESen
dc.subjectPower Electronicsen
dc.titleAnalysis of the Power Conditioning System for a Superconducting Magnetic Energy Storage Uniten
dc.typeThesisen
thesis.degree.disciplineElectrical and Computer Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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