Three-level soft-switched DC-to-DC converter and single-phase, single-stage, three-level AC-to-DC converter

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dc.contributor.authorDharmarajan, Vimala
dc.contributor.supervisorBhat, Ashoka Krishna Sarpangal
dc.date.accessioned2010-03-10T18:49:18Z
dc.date.available2010-03-10T18:49:18Z
dc.date.copyright2006en
dc.date.issued2010-03-10T18:49:18Z
dc.degree.departmentDept. of Electrical and Computer Engineeringen
dc.degree.levelMaster of Applied Science M.A.Sc.en
dc.description.abstractThis thesis proposes a three-level DC-to-DC converter with capacitive output filter and its extension to single-phase, single-stage, three-level AC-to-DC converter with capacitive output filter. The AC-to-DC converter integrates a three-level boost converter operating in discontinuous conduction mode (DCM) and a three-level half-bridge DC-to-DC converter with capacitive output filter. The steady-state operation of the DC-to-DC converter and AC-to-DC converter with capacitive output filter are studied with phase-shifted gating scheme. The three-level topology reduces the voltage rating of the switches to half of the input voltage. Soft-switching is achieved for switches at different load and input voltage conditions. Boost section of the AC-to-DC converter achieves automatic power factor correction (PFC). At reduced load and higher input voltage conditions, the line current Total Harmonic Distortion (THD) increases with phase-shifted gating scheme. The THD has been reduced by using a complementary PWM gating control in the AC-to-DC converter.en
dc.identifier.urihttp://hdl.handle.net/1828/2335
dc.languageEnglisheng
dc.language.isoenen
dc.rightsAvailable to the World Wide Weben
dc.subjectconvertersen
dc.subject.lcshUVic Subject Index::Sciences and Engineering::Engineering::Electrical engineeringen
dc.titleThree-level soft-switched DC-to-DC converter and single-phase, single-stage, three-level AC-to-DC converteren
dc.typeThesisen

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