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dc.contributor.authorHertz, Erik M.en_US
dc.date.accessioned2014-03-14T20:42:10Z
dc.date.available2014-03-14T20:42:10Z
dc.date.issued2001-07-24en_US
dc.identifier.otheretd-07292001-191001en_US
dc.identifier.urihttp://hdl.handle.net/10919/34234
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_US
dc.publisherVirginia Techen_US
dc.relation.haspartHertz_MS_Thesis.pdfen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectpower factor correction (PFC)en_US
dc.subjectelectromagnetic interference (EMI)en_US
dc.subjectgenetic algorithmsen_US
dc.subjecttemperature riseen_US
dc.subjectper unit analysisen_US
dc.subjectoptimizationen_US
dc.titleThermal and EMI Modeling and Analysis of a Boost PFC Circuit Designed Using a Genetic-based Optimization Algorithmen_US
dc.typeThesisen_US
dc.contributor.departmentElectrical and Computer Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineElectrical and Computer Engineeringen_US
dc.contributor.committeechairBoroyevich, Dushanen_US
dc.contributor.committeememberLai, Jasonen_US
dc.contributor.committeememberChen, Dan Y.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-07292001-191001/en_US
dc.date.sdate2001-07-29en_US
dc.date.rdate2002-07-31
dc.date.adate2001-07-31en_US


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