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dc.contributor.authorElserougi, Ahmed
dc.contributor.authorAbdelsalam, Ibrahim
dc.contributor.authorMassoud, Ahmed
dc.contributor.authorAhmed, Shehab
dc.date.accessioned2021-03-22T06:46:28Z
dc.date.available2021-03-22T06:46:28Z
dc.date.issued2021-03-16
dc.date.submitted2020-07-15
dc.identifier.citationElserougi, A., Abdelsalam, I., Massoud, A., & Ahmed, S. (2021). A modular multilevel DC-DC converter with self-energy equalization for DC grids. IET Renewable Power Generation. doi:10.1049/rpg2.12142
dc.identifier.issn1752-1416
dc.identifier.issn1752-1424
dc.identifier.doi10.1049/rpg2.12142
dc.identifier.urihttp://hdl.handle.net/10754/668183
dc.description.abstractMedium-/High Voltage DC grids are interesting for the integration of renewable energy sources. DC-DC conversion systems are highly needed for the development of DC grids. Recently, Modular Multilevel Converter (MMC) is the most promising technology for medium-/high-voltage applications, but employing the conventional MMC with DC output voltage leads to diversion in the Submodule (SM) capacitor voltages, that is energy drift. This paper proposes a modified modular multilevel DC-DC converter with self-energy equalization, which ensures successful DC-DC conversion with balanced capacitors voltages. In the modified topology, clamping Insulated Gate Bipolar Transistors (IGBTs) are employed in each arm to enable parallel-connection of the capacitors in the same arm. During the operation (equalization period), the parallel-connected upper capacitors are connected to the parallel-connected lower capacitors in each leg through a small limiting inductor to transfer energy between the arms to ensure balanced capacitor voltages. The proposed configuration, along with the operational concepts, mathematical analysis, and design, are presented. Finally, simulation and experimental results are presented for validation.
dc.publisherInstitution of Engineering and Technology (IET)
dc.relation.urlhttps://onlinelibrary.wiley.com/doi/10.1049/rpg2.12142
dc.rightsThis is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.titleA modular multilevel DC-DC converter with self-energy equalization for DC grids
dc.typeArticle
dc.contributor.departmentAli I. Al-Naimi Petroleum Engineering Research Center (ANPERC)
dc.contributor.departmentComputer, Electrical and Mathematical Science and Engineering (CEMSE) Division
dc.contributor.departmentElectrical and Computer Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalIET Renewable Power Generation
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionDepartment of Electrical Engineering Alexandria University Alexandria Egypt
dc.contributor.institutionDepartment of Electrical Engineering, Arab Academy for Science Technology and Maritime Transport Cairo Egypt
dc.contributor.institutionDepartment of Electrical Engineering Qatar University Doha Qatar
kaust.personAhmed, Shehab
dc.date.accepted2021-01-19
refterms.dateFOA2021-03-22T06:47:17Z
dc.date.published-online2021-03-16
dc.date.published-print2021-06


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This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Except where otherwise noted, this item's license is described as This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.