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dc.contributor.authorHuang, Qihongen_US
dc.date.accessioned2014-03-14T20:51:01Z
dc.date.available2014-03-14T20:51:01Z
dc.date.issued1997-02-04en_US
dc.identifier.otheretd-2113131549741341en_US
dc.identifier.urihttp://hdl.handle.net/10919/36538
dc.description.abstractA constant switching frequency with the sixth-order harmonic injection PWM concept is established, and a sixth-order harmonic injection technique is developed for the harmonic reduction of a single-switch three-phase boost rectifier. The approach employs a constant duty cycle with sixth-order harmonic injection to suppress the dominant (fifth-order) harmonic in the input currents. Hence, to meet the THD<10% requirement, the rectifier voltage gain can be designed down to 1.45; to meet the IEC 1000-3-2 (A) standard, the output power can be pushed up to 10 kW for the application with a 3X220 V input and a 800 V output. The results are verified on a 6-kW prototype. The injection principle is graphically explained in current waveforms and mathematically proved. Two injection methods are proposed to meet either the THD requirement or the IEC standard. The injection implementation and design guidelines are provided. The boost inductor design and EMI filter design are discussed. An average small- signal model based on the equivalent multi-module model is developed and experimentally verified. The variations of the small-signal model against load are demonstrated, and the compensator design is discussed. The results show that at no load, the dominant pole of the control-to-output transfer function approaches the origin and causes more phase delay, making the control design difficult. To avoid the no load case and to simplify the control design, a 50-W dummy load (1% of the full load) is added. Finally, a simple nonlinear gain control circuit is presented to mitigate the load effect and reduce the dummy load to 10 W.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartetd.pdfen_US
dc.relation.haspartthesis.pdfen_US
dc.rightsI hereby grant to Virginia Tech or its agents the right to archive and to make available my thesis or dissertation in whole or in part in the University Libraries in all forms of media, now or hereafter known. I retain all proprietary rights, such as patent rights. I also retain the right to use in future works (such as articles or books) all or part of this thesis or dissertation.en_US
dc.subjectpower factor correctionen_US
dc.subjectswitching rectifieren_US
dc.subjectPWM techniquesen_US
dc.titleHarmonic Reduction IN a Single-Switch Three-Phase Boost Rectifier With Harmonic-Injected PWMen_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.committeechairLee, Fred C.en_US
dc.contributor.committeememberJovanovic, Milan M.en_US
dc.contributor.committeememberChen, Dan Y.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-2113131549741341/en_US
dc.date.sdate1998-07-17en_US
dc.date.rdate1997-02-04
dc.date.adate1997-02-04en_US


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