Improvements of Synchronous Rectification on LLC-DCX

dc.contributor.authorYu, Oscaren
dc.contributor.committeechairLai, Jih-Shengen
dc.contributor.committeememberHa, Dong Samen
dc.contributor.committeememberLi, Qiangen
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessioned2018-10-04T19:26:15Zen
dc.date.available2018-10-04T19:26:15Zen
dc.date.issued2018-09-10en
dc.description.abstractThis research explores two issues when implementing drain-source voltage sensed synchronous rectification (SR) on LLC DC-Transformers (DCXs). Firstly, a current resonance issue caused by the SR controller, and secondly a early turn-off issue from parasitics present in the drain-source sensing path. Two novel methods are proposed to solve the early turn-off issue, and an FPGA based solution is built to validate and fix the resonance issue. Simulations are run to quantify the amount of rectifier power savings possible with the proposed solutions.en
dc.description.abstractgeneralThis research explores issues and improvements in synchronous rectifiers used in resonant based power conversion circuits. The two issues explored hurt rectifier efficiency, and thus total power conversion circuit efficiency. Implementation issues are identified, simulated, and new solutions are proposed. Simulations are run to quantify the amount of power savings is possible.en
dc.description.degreeMaster of Scienceen
dc.format.mediumETDen
dc.identifier.urihttp://hdl.handle.net/10919/85238en
dc.language.isoenen
dc.publisherVirginia Techen
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivs 3.0 United Statesen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/us/en
dc.subjectpower electronicsen
dc.subjectllc-dcxen
dc.subjectsynchronous rectificationen
dc.titleImprovements of Synchronous Rectification on LLC-DCXen
dc.typeThesisen
thesis.degree.disciplineElectrical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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