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dc.contributor.advisorKwasinski, Alexisen
dc.creatorChoung, Seung Hoonen
dc.date.accessioned2011-05-31T21:05:06Zen
dc.date.accessioned2011-05-31T21:05:20Zen
dc.date.available2011-05-31T21:05:06Zen
dc.date.available2011-05-31T21:05:20Zen
dc.date.issued2011-05en
dc.date.submittedMay 2011en
dc.identifier.urihttp://hdl.handle.net/2152/ETD-UT-2011-05-2795en
dc.descriptiontexten
dc.description.abstractNowadays, the number of applications which need more than one power source is increasing. Distributed generating systems or micro-grid systems normally use more than one power source or more than one kind of energy source. Also, to increase the utilization of renewable energy sources, diversified energy source combination is recommended. For example, a wind-photovoltaic generating system, a combination of a wind generator and photovoltaic array, can give a greater degree of freedom when choosing the install location. The combination of more power sources and diversified power sources makes it possible to obtain higher availability in a power system. A parallel connection of converters has been used to integrate more than one energy source in a power system. However, a multiple-input converter (MIC) can generally have the following advantages compare to a combination of several individual converters; (1) cost reduction, (2) compactness, (3) more expandability and (4) greater manageability. First, this research suggests MIC topology comparison criteria that can be used as a decision guide for choosing a MIC topology depending on the application. Even though there are some MIC topology classification methods such as by the kind of combining methods, the classification methods are not enough to choose one particular topology. The comparison criteria presented in this dissertation are practical enough to decide which topology is suitable and should be chosen. Second, a new MI modified inverse Watkins-Johnson converter (MIMIWJC) without a coupled inductor is proposed. The circuit configuration of this converter and its operation principles are described, including the open-loop and closed-loop circuit. For control purposes, a small signal model of the proposed converter is developed using Middlebrook’s extra element theorem. In addition, two possible control methods are introduced in this dissertation. Finally, the theoretical analysis of the proposed converter is verified with simulations and experiments.en
dc.format.mimetypeapplication/pdfen
dc.language.isoengen
dc.subjectMultiple-input DC-DC converteren
dc.subjectInversed Watkins-Johnson converteren
dc.subjectDistributed generationen
dc.subjectMicro-griden
dc.subjectAlternative energy source interfaceen
dc.subjectExtra element theoremen
dc.subjectMultiple-input converteren
dc.titleTopology development and analysis for multiple input DC/DC converteren
dc.date.updated2011-05-31T21:05:20Zen
dc.contributor.committeeMemberGrady, William M.en
dc.contributor.committeeMemberAraposththis, Aristotleen
dc.contributor.committeeMemberDriga, Mircea D.en
dc.contributor.committeeMemberSon, You S.en
dc.description.departmentElectrical and Computer Engineering
dc.type.genrethesisen
thesis.degree.departmentElectrical and Computer Engineeringen
thesis.degree.disciplineElectrical and Computer Engineeringen
thesis.degree.grantorUniversity of Texas at Austinen
thesis.degree.levelDoctoralen
thesis.degree.nameDoctor of Philosophyen


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