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dc.contributor.authorPerez-Basante, Angel
dc.contributor.authorCeballos, Salvador
dc.contributor.authorKonstantinou, Georgios
dc.contributor.authorPou, J.
dc.contributor.authorSanchez-Ruiz, Alain
dc.contributor.authorLopez, Iraide
dc.contributor.authorMartinez de Alegria, Inigo
dc.date.accessioned2020-01-13T11:00:11Z
dc.date.available2020-01-13T11:00:11Z
dc.date.issued2020-08
dc.identifier.citationPerez-Basante, Angel, Salvador Ceballos, Georgios Konstantinou, J. Pou, Alain Sanchez-Ruiz, Iraide Lopez, and Inigo Martinez de Alegria. “Circulating Current Control for Modular Multilevel Converters with (N+1) Selective Harmonic Elimination - PWM.” IEEE Transactions on Power Electronics (2020): 1–1. doi:10.1109/tpel.2020.2964522.en
dc.identifier.issn0885-8993en
dc.identifier.urihttp://hdl.handle.net/11556/851
dc.description.abstractModular multilevel converters (MMCs) require control of the circulating current, i_circ, to improve their operation and efficiency. This is particularly important when low switching frequency modulation techniques, such as selective harmonic elimination (SHE-PWM) are applied. This work provides a novel method to control the circulating current along with (N+1) SHE-PWM. Unlike the case of (2N+1) SHE-PWM, explicit redundant levels are not available and, therefore, different modulation indexes, m_1 and m_2, are employed in the upper and lower arms to obtain the desired modulation index m_a. Unlike previous (N+1) circulating current methods, the distances between m_a, m_1 and m_2 remain constant to not disturb the phase output voltage, with an interchange of m_1 and m_2 between the arms used to follow the desired i_circ. The control adjusts the dc component of the circulating current and the energy stored in the SMs to their references, while maintaining the energy balance between the upper and lower arms. Simulation tests and experimental results, obtained from a single-phase laboratory prototype MMC, validate the proposed control technique.en
dc.language.isoengen
dc.publisherIEEEen
dc.titleCirculating Current Control for Modular Multilevel Converters with (N+1) Selective Harmonic Elimination - PWMen
dc.typearticleen
dc.identifier.doi10.1109/TPEL.2020.2964522en
dc.rights.accessRightsembargoedAccessen
dc.subject.keywordsSelective harmonic elimination (SHE)en
dc.subject.keywordsModular multilevel converter MMCen
dc.subject.keywordsOptimization algorithmsen
dc.subject.keywordsCirculating currenten
dc.identifier.essn1941-0107en
dc.issue.number8
dc.journal.titleIEEE Transactions on Power Electronicsen
dc.page.final8725
dc.page.initial8712
dc.volume.number35


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