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Thermal and EMI Modeling and Analysis of a Boost PFC Circuit Designed Using a Genetic-based Optimization Algorithm

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dc.contributor.authorHertz, Erik M.en
dc.contributor.committeechairBoroyevich, Dushanen
dc.contributor.committeememberLai, Jih-Shengen
dc.contributor.committeememberChen, Dan Y.en
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessioned2014-03-14T20:42:10Zen
dc.date.adate2001-07-31en
dc.date.available2014-03-14T20:42:10Zen
dc.date.issued2001-07-24en
dc.date.rdate2002-07-31en
dc.date.sdate2001-07-29en
dc.description.abstractThe boost power factor correction (PFC) circuit is a common circuit in power electronics. Through years of experience, many designers have optimized the design of these circuits for particular applications. In this study, a new design procedure is presented that guarantees optimal results for any application. The algorithm used incorporates the principles of evolution in order to find the best design. This new design technique requires a rethinking of the traditional design process. Electrical models have been developed specifically for use with the optimization tool. One of the main focuses of this work is the implementation and verification of computationally efficient thermal and electro-magnetic interference (EMI) models for the boost PFC circuit. The EMI model presented can accurately predict noise levels into the 100's of kilohertz range. The thermal models presented provide very fast predictions and they have been adjusted to account for different thermal flows within the layout. This tuning procedure results in thermal predictions within 10% of actual measurement data. In order to further reduce the amount of analysis that the optimization tool must perform, some of the converter design has been performed using traditional methods. This part of the design is discussed in detail. Additionally, a per unit analysis of EMI and thermal levels is introduced. This new analysis method allows EMI and thermal levels to be compared on the same scale thus highlighting the tradeoffs between the both behaviors.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-07292001-191001en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-07292001-191001/en
dc.identifier.urihttp://hdl.handle.net/10919/34234en
dc.publisherVirginia Techen
dc.relation.haspartHertz_MS_Thesis.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectpower factor correction (PFC)en
dc.subjectelectromagnetic interference (EMI)en
dc.subjectgenetic algorithmsen
dc.subjecttemperature riseen
dc.subjectper unit analysisen
dc.subjectOptimizationen
dc.titleThermal and EMI Modeling and Analysis of a Boost PFC Circuit Designed Using a Genetic-based Optimization Algorithmen
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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