Modeling and Characterization of a PFC Converter in the Medium and High Frequency Ranges for Predicting the Conducted EMI

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dc.contributor.authorYang, Liyuen
dc.contributor.committeechairLee, Fred C.en
dc.contributor.committeecochairOdendaal, Willem Gerhardusen
dc.contributor.committeemembervan Wyk, Jacobus Danielen
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessioned2014-03-14T20:46:09Zen
dc.date.adate2003-10-06en
dc.date.available2014-03-14T20:46:09Zen
dc.date.issued2003-09-08en
dc.date.rdate2003-10-06en
dc.date.sdate2003-09-29en
dc.description.abstractThis thesis presents the conducted electro-magnetic interference (EMI) prediction results for a continuous conduction mode (CCM) power factor correction (PFC) converter as well as the theoretical analysis for the noise generation and propagation mechanisms. In this thesis, multiple modeling and characterization techniques in the medium and high frequency ranges are developed for the circuit components that are important contributors to the EMI noise, so that a detailed simulation circuit for EMI prediction can be constructed. The conducted EMI noise prediction from the simulation circuit closely matches the measurement results obtained by a spectrum analyzer. Simulation time step and noise separator selection are two important issues for the noise simulation and measurement. These two issues are addressed and the solutions are proposed. The conducted EMI generation and propagation mechanisms are analyzed in a systematic way. Two loop models are proposed to explain the EMI noise behavior. The effects of the PFC inductor, the parasitic capacitance between the device and the heatsink, the rising/falling time of the MOSFET VDS voltage, and the input wires are studied to verify the validity of the loop models.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-09292003-135942en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-09292003-135942en
dc.identifier.urihttp://hdl.handle.net/10919/35226en
dc.publisherVirginia Techen
dc.relation.haspartLiyu_Yang_ETD.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectModeling and Characterizationen
dc.subjectPFC converteren
dc.subjectConducted EMIen
dc.titleModeling and Characterization of a PFC Converter in the Medium and High Frequency Ranges for Predicting the Conducted EMIen
dc.typeThesisen
thesis.degree.disciplineElectrical and Computer Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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