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dc.contributor.authorZhang, Jindongen_US
dc.date.accessioned2014-03-14T20:52:16Z
dc.date.available2014-03-14T20:52:16Z
dc.date.issued1998-08-06en_US
dc.identifier.otheretd-72898-13450en_US
dc.identifier.urihttp://hdl.handle.net/10919/36938
dc.description.abstractThis thesis work focuses on the study and improvement of single-stage power factor correction techniques. The generalized structures of the present pulse-width-modulation (PWM) integrated single-stage power factor correction (PFC) converters are presented. The typical PFC cells in the single-stage PFC converter are identified. After that, the necessary PFC condition is derived and verified to understand the principle of the single-stage PFC converters. As an example, the continuous current mode (CCM) current source single-stage PFC converter is studied. The circuit intuitions and design consideration of this converter are presented. Also, an improved current source single-stage PFC converter with a low-frequency auxiliary switch is proposed to overcome the problem of the previous converter. Experimental verification shows the improvement is effective. To evaluate single-stage PFC technique, a comparison study between the current source single-stage and the boost two-stage PFC converters is done in this thesis. It shows that for universal line application, due to the wide bus-capacitor voltage range, single-stage PFC converters have higher component ratings than two-stage PFC converters. This limits the application of single-stage PFC converter. Therefore, an interesting future work will be how to reduce the bus voltage range of single-stage PFC converters.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartABSTRACT.PDFen_US
dc.relation.haspartACKNOWLEDGMENT.PDFen_US
dc.relation.haspartILLUSE-FIGS.PDFen_US
dc.relation.haspartCONTENTS.PDFen_US
dc.relation.haspartCHAP1.PDFen_US
dc.relation.haspartCHAP2.PDFen_US
dc.relation.haspartCHAP3.PDFen_US
dc.relation.haspartCHAP4.PDFen_US
dc.relation.haspartCHAP5.PDFen_US
dc.relation.haspartREF.PDFen_US
dc.relation.haspartVITA.PDFen_US
dc.relation.haspartTITLE1.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.subjectpower factor correctionen_US
dc.subjectsingle-stageen_US
dc.titleStudy and Improvement of Single-Stage Power Factor Correction Techniquesen_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.committeechairLee, Fred C.en_US
dc.contributor.committeememberLai, Jasonen_US
dc.contributor.committeememberChen, Dan Y.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-72898-13450/en_US
dc.date.sdate1998-08-06en_US
dc.date.rdate1999-08-31
dc.date.adate1998-08-31en_US


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