Design of a high-efficiency, high-performance zero-voltage-switched battery charger-discharger for the NASA EOS space platform

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dc.contributor.authorEspinosa, Pablo A.en
dc.contributor.committeechairLee, Fred C.en
dc.contributor.committeememberSable, Daniel M.en
dc.contributor.committeememberCho, Bo H.en
dc.contributor.departmentElectrical Engineeringen
dc.date.accessioned2014-03-14T21:48:34Zen
dc.date.adate2009-10-31en
dc.date.available2014-03-14T21:48:34Zen
dc.date.issued1994-06-09en
dc.date.rdate2009-10-31en
dc.date.sdate2009-10-31en
dc.description.abstractThe integration of two Zero-Voltage-Switched Bidirectional Battery Charger Discharger (ZVS-BBCD) units into a space power system is shown. A robust design featuring: four interleaved phases, commandable charge rates, overcurrent protection, overvoltage protection, soft starting, reliable gate drive circuitry, high efficiency, and good dynamics is demonstrated. The ZVS-BBCD is compared to separate hard-switched multimodule charge and discharge units in weight and efficiency and is found to be significantly lighter with comparable losses. The ZVS-BBCD has similar characteristics in discharge and in charge bus regulation modes and allows the use of a common control design for both modes. The two ZVS-BBCDs are integrated into the NASA power system testbed built at the Virginia Power Electronics Center (VPEC) to test their dynamics. The result shows good characteristics including low bus impedance and fast transient response.en
dc.description.degreeMaster of Scienceen
dc.format.extentx, 124 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-10312009-020419en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-10312009-020419/en
dc.identifier.urihttp://hdl.handle.net/10919/45380en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1994.E875.pdfen
dc.relation.isformatofOCLC# 31278031en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1994.E875en
dc.subject.lcshBattery chargers -- Designen
dc.subject.lcshEarth resources technology satellites -- Designen
dc.subject.lcshSpace vehicles -- Batteries -- Designen
dc.titleDesign of a high-efficiency, high-performance zero-voltage-switched battery charger-discharger for the NASA EOS space platformen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineElectrical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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