Arm energy balancing techniques for modular multilevel converter for both equal and unequal frequencies operations Sah, Gyanendra Kumar , 1996- (VerfasserIn) Eckel, Hans-Günter , 1963- (AkademischeR BetreuerIn) Hiller, Marc (AkademischeR BetreuerIn) Gruber, Rainer (AkademischeR BetreuerIn) Universität Rostock (Grad-verleihende Institution) Universität Rostock Fakultät für Informatik und Elektrotechnik (Grad-verleihende Institution) Text theses Text Hochschulschrift 2023 15.12.2023 eng ger electronic resourceremoteComputermedienOnline-Ressourceapplication/pdf1 Online-Ressource (XVIII, 137, A-44) Illustrationen, Diagramme This work investigates and presents many possible degrees of freedom and arm energies regulation techniques of MMC for both equal and unequal single-phase and three-phase system frequency operations. Only four average arm energy controllers are found to be possible, which do not inject harmonics into the source and load currents. Of these four methods, only two are stable for equal frequency operations. A new seven-arm direct AC-AC MMC topology is proposed to increase the converter's power density if the source does not allow reactive power flow for equal frequency operation of MMC.<eng> Open Access Urheberrechtsschutz 1.0 vorgelegt von Gyanendra Kumar Sah GutachterInnen: Hans-Günter Eckel (Institut für Elektrische Energietechnik, University of Rostock) ; Marc Hiller (Power Electronic Systems (PES), Elektrotechnisches Institut (ETI), Karlsruher Institut für Technologie (KIT)) ; Rainer Gruber (Siemens Mobility GmbH, Erlangen) Dissertation Universität Rostock 2024 620 621.3 621.3192 621.3 https://purl.uni-rostock.de/rosdok/id00004850 https://doi.org/10.18453/rosdok_id00004850 https://nbn-resolving.org/urn:nbn:de:gbv:28-rosdok_id00004850-8 https://d-nb.info/1370896131/34 Arm energy balancing techniques for modular multilevel converter for both equal and unequal frequencies operations--(DE-627)1929712375 urn:nbn:de:gbv:28-rosdok_id00004850-8 doi: 10.18453/rosdok_id00004850 oclc: 1526548141 ppn: (DE-627)1929708947