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dc.contributor.authorHerwald, Marc A.en_US
dc.date.accessioned2014-03-14T20:37:26Z
dc.date.available2014-03-14T20:37:26Z
dc.date.issued1999-04-29en_US
dc.identifier.otheretd-051799-005712en_US
dc.identifier.urihttp://hdl.handle.net/10919/32934
dc.description.abstractThis thesis is about the development and performance enhancement of an induction motor electric vehicle drive system. The fundamental operation of the induction motor drive hardware and control software are introduced, and the different modulation techniques tested are described. A software simulation package is developed to assist in the control design and analysis of the drive system. Next, to establish the efficiency gains obtained by using space vector modulation in the improved drive system, an inverter with hysteresis current control is compared to the same inverter with space vector modulation in steady state and on separate driving profiles. A method for determining induction motor harmonic losses is introduced and is based on obtaining the phase current harmonics from sampled induction motor stator phase currents obtained. Using a semi-empirical loss model, the induction motor losses are compared between different pulse width modulation control strategies throughout the torque versus speed operating region. Next, several issues related to the robustness of the control design are addressed. To obtain good performance in the actual vehicle, a new method for driveline resonance compensation is developed and proven to work well through simulation and experiment. Lastly, this thesis discusses the development of a new method to compensate for the gain and phase error obtained in the feedback of the d-axis and q-axis stator flux linkages. Improved accuracy of the measured stator flux linkages will be shown to improve the field oriented controller by obtaining a more accurate measurement of the feedback electromagnetic torque.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartmhthesis.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.subjectdrive resonance compensationen_US
dc.subjectinduction motor drivesen_US
dc.subjectspace vector modulationen_US
dc.subjectelectric vehicleen_US
dc.subjectcomparison of induction motor lossesen_US
dc.subjectdrive cycle simulationen_US
dc.subjectfield oriented controlen_US
dc.subjectstator flux linkage measurementen_US
dc.titleControl Design and Analysis of an Advanced Induction Motor Electric Vehicle Driveen_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.committeememberLindner, Douglas K.en_US
dc.contributor.committeememberLai, Jasonen_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-051799-005712/en_US
dc.date.sdate1999-05-17en_US
dc.date.rdate2000-05-20
dc.date.adate1999-05-20en_US


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