Soft-switching techniques for pulse-width-modulated converters

Simple item page
dc.contributor.authorHua, Guichaoen
dc.contributor.committeechairLee, Fred C.en
dc.contributor.committeememberJovanovic, Milan M.en
dc.contributor.committeememberChen, Dan Y.en
dc.contributor.committeememberCho, Bo H.en
dc.contributor.committeememberLin, Taoen
dc.contributor.departmentElectrical Engineeringen
dc.date.accessioned2014-03-14T20:17:36Zen
dc.date.adate2005-10-24en
dc.date.available2014-03-14T20:17:36Zen
dc.date.issued1994-04-22en
dc.date.rdate2005-10-24en
dc.date.sdate2005-10-24en
dc.description.abstractThe concept of soft-switching pulse-width-modulated (PWM) technique was proposed aimed at combining the advantages of both the conventional PWM technique and the resonant technique. This work presents four new families of soft-switching PWM converters: the zero-voltage-switched (ZVS) PWM converters, the zero-current-switched (ZCS) PWM converters, the zerovoltage- transition (ZVT) PWM converters, and the zero-current-transition (ZCT) PWM converters. The family of ZVS- and ZCS-PWM converters are developed to improve the performance of the ZVS and ZCS quasi-resonant converters, respectively. The principles of operations of these two families of converters are presented, and the merits and limitations are assessed. A number of experimental converters are breadboarded to verify the theoretical analysis. Both the ZVT-PWM and ZCT-PWM techniques use the concept of shunt resonant network to achieve soft-switching. In this way, the new converters achieve soft-switching without increasing the voltage and current stresses of the power switches and diodes. By using the boost topology as an example, a complete dc analysis of the ZVT-PWM and ZCT-PWM converters is presented, and the dc Voltage-conversion ratio characteristics are derived. Design trade-offs are examined, and design procedures are established. The theoretical analysis and novel features of the proposed converters are verified on a number of breadboarded converters. Finally, the typical small-signal characteristics of the ZVT -PWM converters are analyzed and verified experimentally by using the boost converter as an example.en
dc.description.degreePh. D.en
dc.format.extentxiii, 203 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-10242005-124114en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-10242005-124114/en
dc.identifier.urihttp://hdl.handle.net/10919/29354en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V856_1994.H83.pdfen
dc.relation.isformatofOCLC# 30935079en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V856 1994.H83en
dc.subject.lcshElectric current convertersen
dc.titleSoft-switching techniques for pulse-width-modulated convertersen
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.disciplineElectrical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
LD5655.V856_1994.H83.pdf
Size:
12.49 MB
Format:
Adobe Portable Document Format
Description:
Download

Collections

Doctoral Dissertations