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dc.contributor.advisorCavin, Ralph K.
dc.creatorCathey, Jimmie Joe
dc.date.accessioned2020-01-08T18:21:48Z
dc.date.available2020-01-08T18:21:48Z
dc.date.created1973
dc.date.issued1972
dc.identifier.urihttp://hdl.handle.net/1969.1/DISSERTATIONS-182137
dc.description.abstractThe power invariant, nonlinear differential equations, that describe the behavior of a two-phase equivalent of a three-phase induction motor, are linearized about an arbitrary nominal point. Under the assumption that terminal voltage and system frequency can be approximated by a straight line segment over any interval of time, solutions of these small perturbation equations are used to give expressions for active and reactive power delivered to the motor during transient conditions. These expressions for power, which turn out to be implicit functions of voltage and frequency, and explicit functions of time and the rates of change of voltage and frequency, are proposed as a load model representation of an induction motor for use in transient stability studies. An intuitively appealing, corrective technique, which reduces the error introduced by the use of a linearized model, is presented. Also, methods of implementing the proposed model in a conventional transient stability program are discussed. One eigenvalue of the system is observed to play a dominant role in the response for small, low voltage motors. A study is made of the sensitivity of this dominant eigenvalue to the motor parameters and nominal point quantities for a particular motor. Experimental work was conducted to verify the model in a laboratory environment. Active and reactive power delivered to an induction motor, along with the rates of change of voltage and frequency, during transient conditions were measured. These measured values of power were compared to those values of power predicted both by the model and by a numerical solution of the differential equations that describe the motor behavior. The model was found to agree reasonably well with the solutions of the differential equations and the laboratory measured values.en
dc.format.extent115 leavesen
dc.format.mediumelectronicen
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.rightsThis thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use.en
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectElectrical Engineeringen
dc.subject.classification1972 Dissertation C363
dc.titleTransient load model of an induction motoren
dc.typeThesisen
thesis.degree.disciplineElectrical Engineeringen
thesis.degree.grantorTexas A&M Universityen
thesis.degree.nameDoctor of Philosophyen
thesis.degree.levelDoctoralen
dc.contributor.committeeMemberAyoub, A. K.
dc.contributor.committeeMemberDenison, John S.
dc.contributor.committeeMemberHuebner, George L.
dc.contributor.committeeMemberLuther, H. A.
dc.type.genredissertationsen
dc.type.materialtexten
dc.format.digitalOriginreformatted digitalen
dc.publisher.digitalTexas A&M University. Libraries


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