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dc.contributor.authorElserougi, Ahmed
dc.contributor.authorAbdelsalam, Ibrahim
dc.contributor.authorMassoud, Ahmed
dc.contributor.authorAhmed, Shehab
dc.date.accessioned2019-10-01T13:13:21Z
dc.date.available2019-10-01T13:13:21Z
dc.date.issued2019-09-13
dc.identifier.citationElserougi, A., Abdelsalam, I., Massoud, A., & Ahmed, S. (2019). A Non-Isolated Hybrid-Modular DC-DC Converter for DC Grids: Small-Signal Modeling and Control. IEEE Access, 7, 132459–132471. doi:10.1109/access.2019.2941249
dc.identifier.doi10.1109/access.2019.2941249
dc.identifier.urihttp://hdl.handle.net/10754/656829
dc.description.abstractThis paper presents small-signal modeling, stability analysis, and controller design of a nonisolated bidirectional hybrid-modular DC-DC Converter for DC grid applications. The DC-DC converter can be used to interconnect two different DC voltage levels in a medium-/high-voltage DC grid. Half-bridge Sub-Modules (SMs) and a high-voltage valve are the main components of the converter. The high-voltage valve can be implemented via employing series-connected Insulated-Gate Bipolar Transistors (IGBTs). Operation with zero voltage switching of the involved high-voltage valve is feasible, i.e., there is no concern pertinent to dynamic voltage sharing among the series-connected IGBTs. The power is transferred from one side to another through the involved SMs, where their capacitors are connected in series across the high-voltage side, while they are connected sequentially across the low-voltage side. In this paper, the state-space averaging technique is employed to derive the small-signal model of the presented converter for controller design. Closed-form expression of the duty cycle-to-inductor current transfer function is extracted. Comparison between simulation results of the small-signal model and the detailed circuit model is presented to authenticate the accuracy of the derived small-signal model. Finally, a scaled-down prototype is used to verify the accuracy of the small-signal model.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.relation.urlhttps://ieeexplore.ieee.org/document/8836552/
dc.rights(c) 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
dc.subjectConverter modeling
dc.subjectDC-DC converters
dc.subjectDC grids
dc.subjectHybrid-modular Converters
dc.subjectSmallsignal analysis
dc.titleA Non-Isolated Hybrid-Modular DC-DC Converter for DC Grids: Small-Signal Modeling and Control
dc.typeArticle
dc.contributor.departmentElectrical Engineering Program
dc.contributor.departmentUpstream Petroleum Engineering Research Center (UPERC)
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.identifier.journalIEEE Access
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionDepartment of Electrical Engineering, Alexandria University, Alexandria 21544, Egypt
dc.contributor.institutionDepartment of Electrical Engineering, Arab Academy for Science, Technology and Maritime Transport, Cairo 2033, Egypt
dc.contributor.institutionDepartment of Electrical Engineering, Qatar University, Doha 2713, Qatar
kaust.personAhmed, Shehab
refterms.dateFOA2019-10-01T13:14:48Z
dc.date.published-online2019-09-13
dc.date.published-print2019


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