Single phase five-level common-ground grid-connected inverter with reduced DC link capacitance

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dc.contributor.authorMarahatta, Anupen
dc.contributor.authorPatra, Sandipanen
dc.contributor.authorKomurcugil, Hasanen
dc.contributor.authorKhadem, Shafien
dc.contributor.funderSustainable Energy Authority of Irelanden
dc.date.accessioned2025-07-14T14:32:33Z
dc.date.available2025-07-14T14:32:33Z
dc.date.issued2025-06-16en
dc.description.abstractThis study introduces an innovative single-phase grid-connected five-level inverter design that features minimized DC link capacitor requirements while enhancing the overall power capacity of the inverter. The reduction in size of DC link capacitance is achieved by using a combination of charge pump circuits and switched capacitors. Existing common ground multilevel inverters suffer from capacitor voltage decay and imbalance, which also limits the power rating of the inverters and increases the size of DC link capacitance. The proposed topology can continuously charge the DC link capacitors, which prevents voltage decay across the capacitors, and the switched capacitor cell avoids the voltage imbalance. The proposed topology significantly reduces the size of DC link capacitors and increases the rated power capacity for common ground five-level configuration. The comprehensive analysis of the proposed topology with recent common ground multilevel topologies is presented. A simulation-based analysis is conducted to assess its performance under dynamic conditions, such as variations in load.en
dc.description.sponsorshipSustainable Energy Authority of Ireland (SuHSI 23/RDD/1034)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationMarahatta, A., Patra, S., Komurcugil, H. and Khadem, S. (2025) 'Single phase five-level common-ground grid-connected inverter with reduced DC link capacitance', 2025 IEEE 19th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG), Antalya, Turkiye, 20-25 May 2025, pp. 1-6. https://doi.org/10.1109/CPE-POWERENG63314.2025.11027303en
dc.identifier.doi10.1109/cpe-powereng63314.2025.11027303en
dc.identifier.eissn2166-9546en
dc.identifier.endpage6en
dc.identifier.issn2166-9538en
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/17701
dc.language.isoenen
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.relation.ispartof2025 IEEE 19th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG)en
dc.rights© 2025, IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, 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 component of this work in other works.en
dc.subjectCommon-ground inverteren
dc.subjectGrid-connected inverteren
dc.subjectReduced capacitanceen
dc.subjectIncreased poweren
dc.subjectSwitched capacitorsen
dc.subjectCharge pumpen
dc.subject~Tyndall National Institute - Conference Items~en
dc.titleSingle phase five-level common-ground grid-connected inverter with reduced DC link capacitanceen
dc.typeConference itemen
dc.typeproceedings-articleen
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