A low ripple bi-directional battery charger/discharger using coupled inductor

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dc.contributor.authorShum, Kin E.en
dc.contributor.committeechairLee, Fred C.en
dc.contributor.committeememberChen, Dan Y.en
dc.contributor.committeememberSable, Daniel M.en
dc.contributor.departmentElectrical Engineeringen
dc.date.accessioned2014-03-14T21:35:07Zen
dc.date.adate2009-04-30en
dc.date.available2014-03-14T21:35:07Zen
dc.date.issued1994en
dc.date.rdate2009-04-30en
dc.date.sdate2009-04-30en
dc.description.abstractThere are two important issues about a spacecraft power conversion system: low ripple current flowing through both battery and bus, and bi-directional power flow to and from the battery. This thesis introduces a novel low ripple current bi-directional battery charge/discharge converter using coupled-inductor. Bi-directional switch structures and proper control scheme make it possible for the power to flow through the same converter in both directions: charging and discharging the battery. Meanwhile, the coupled-inductor is designed in such a way that all the magnetizing current (ripple current) is confined within the converter, yielding "zero-current-ripple" (ZCR) on both battery side and bus side. ZCR condition analysis, topological comparison with similar approach, and circuit design guide line are given in this thesis. Circuit operation and performance, bi-directional control strategy, and small signal characteristics of the converter are also presented along with experimental verification.en
dc.description.degreeMaster of Scienceen
dc.format.extent92 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-04302009-040332en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-04302009-040332/en
dc.identifier.urihttp://hdl.handle.net/10919/42369en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1994.S566.pdfen
dc.relation.isformatofOCLC# 30502932en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1994.S566en
dc.subject.lcshElectric batteriesen
dc.subject.lcshElectric current convertersen
dc.subject.lcshElectric inductorsen
dc.titleA low ripple bi-directional battery charger/discharger using coupled inductoren
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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