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A Cascaded H-Bridge-Based Multilevel Converter With Low Energy Pulsation for High-Power Grid Applications

Bernet, Daniel 1; Hiller, Marc 1
1 Elektrotechnisches Institut (ETI), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

The ongoing transformation of power supply is leading to an increasing penetration of electrical grids with power converters, which are used in high-volume applications such as grid integration of renewable energy sources, energy storage systems, charging infrastructure for electric vehicles, and industrial electric drives. This results in significant and novel challenges for power quality and supply stability, which will likely result in further increasing demands on the converters used in the aforementioned applications. To address these challenges, this article presents a novel multilevel converter system for high-power grid applications, which is characterized by high output power and voltage quality, low energy pulsation, and high scalability and modularity. These characteristics are achieved by a novel concept of operation for the combination of a high-power main converter and a low-power cascaded H-bridge converter, which is derived based on the modeling and control design carried out for the proposed converter system. Simulation and experimental results verify the potential of the multilevel converter system and show that, compared to full-power multilevel converters, it allows high output voltage quality at high output power while maintaining low current load and low energy pulsation within the cells of the cascaded H-bridge converter.


Originalveröffentlichung
DOI: 10.1109/TPEL.2023.3326100
Scopus
Zitationen: 5
Web of Science
Zitationen: 4
Dimensions
Zitationen: 7
Zugehörige Institution(en) am KIT Elektrotechnisches Institut (ETI)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 02.2024
Sprache Englisch
Identifikator ISSN: 0885-8993, 1941-0107
KITopen-ID: 1000167138
HGF-Programm 37.12.02 (POF IV, LK 01) Design,Operation & Digitalization of the Future Energy Grids
Erschienen in IEEE Transactions on Power Electronics
Verlag Institute of Electrical and Electronics Engineers (IEEE)
Band 39
Heft 2
Seiten 2305–2321
Vorab online veröffentlicht am 20.10.2023
Nachgewiesen in Dimensions
Web of Science
Scopus
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