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dc.contributor.advisorEhsani, Mehrdaden_US
dc.creatorDoolittle, Randy Geneen_US
dc.date.accessioned2010-01-15T00:06:30Zen_US
dc.date.accessioned2010-01-16T00:52:15Z
dc.date.available2010-01-15T00:06:30Zen_US
dc.date.available2010-01-16T00:52:15Z
dc.date.created2008-05en_US
dc.date.issued2009-05-15en_US
dc.identifier.urihttp://hdl.handle.net/1969.1/ETD-TAMU-2718
dc.description.abstractThe purpose of this work was to investigate a permanent magnet synchronous machine which will be produced by an industry partner of the Institut für Stromrichtertechnik und Elektrische Antriebe (ISEA) an institute of the Rheinisch Westfälisch Technische Hochschule - Aachen, Germany (RWTH). The machine manufacturer noted certain abnormalities with the frequency spectrum produced by an electric machine that they were developing; this problem was brought to ISEA in order to be investigated. My work continues the work of my supervisor, Dipl.- Ing Matthias Bösing, and seeks to further examine the machine for a much wider range of operating points, determine the relationship between current amplitude, harmonics, control angle and rotor position on radial force components of the machine and therefore stresses on the stator; which are the primary causes of electrical machine noise. Rather than investigate acoustic issues in particular, the study was limited to the study of electromagnetically generated radial force ripple, which is the cause of stator deflection modes and therefore the emission of sound waves. The primary results of this thesis researched the operation of a permanent magnet synchronous machine and described its behavior with regards to force, torque, and force and torque ripple and their spectrums versus numerous parameters, including control angle, secant current and rotor position. Next, the work used provided data, literature and the simulation results for this thesis in order to deconstruct the operation regions of the particular machine and therefore link the causes of particular noise spectral components to the operation of the machine. From this it was possible to identify potential ways to eliminate these areas of noise. Following this, the thesis examined a particular abnormality in the torque and force waveforms produced by the machine and devised actions which could correct this abnormality. After identifying this asymmetry, the work explored how to choose an optimal control strategy for eliminating particular harmonics based on the simulated operating points and a desired command torque. Finally, the research built on the previous work by supplementing the method of current harmonic injection for eliminating radial force harmonics in this machine, with a method of determining an optimal operating point before the injection currents are calculated.en_US
dc.format.mediumelectronicen_US
dc.format.mimetypeapplication/pdfen_US
dc.language.isoen_USen_US
dc.subjectPMSMen_US
dc.subjectPermanent Magneten_US
dc.subjectVehicleen_US
dc.subjectPMSM Controlen_US
dc.subjectElectric Machine Noiseen_US
dc.titleNoise reduction control strategy of a permanent magnet synchronous machine for vehicle applicationsen_US
dc.typeBooken
dc.typeThesisen
thesis.degree.departmentElectrical and Computer Engineeringen_US
thesis.degree.disciplineElectrical Engineeringen_US
thesis.degree.grantorTexas A&M Universityen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelMastersen_US
dc.contributor.committeeMemberEnjeti, Prasaden_US
dc.contributor.committeeMemberJi, Jim X.en_US
dc.contributor.committeeMemberShandley, Robert Ren_US
dc.type.genreElectronic Thesisen_US
dc.type.materialtexten_US
dc.format.digitalOriginborn digitalen_US


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