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Quasi-Two-Level Flying-Capacitor-Converter for Medium Voltage Grid Applications

Mersche, Stefan; Bernet, Daniel; Hiller, Marc

Medium voltage converters are becoming more relevant in future grid applications. Especially more wind and PV generation systems will be have to added and integrated into the grid in order to achieve the required reduction in CO2 emissions. High power generation units will be integrated into the grid at medium voltage level. Furthermore meshed MV grids will require interties based on MV converter technology. Today's standard medium voltage converters are either based on the MMC technology or us 3L/5L approaches operated at low switching frequencies and containing bulky filters. Both concepts still lead to relatively high costs and low efficiencies which are major reasons for the slow spread of power converters in medium voltage grid applications.. Future grid applications demand less distortion, higher reliability and lower costs for converter systems at each voltage level. The Quasi-Two-Level operation of the flying capacitor multilevel converter with silicone-carbide (SiC) based semiconductors is a method for achieving these requirements for medium voltage converters. This paper presents a new concept for minimizing capacitance and balancing the capacitors with fast switching semiconductors. ... mehr

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Postprint §
DOI: 10.5445/IR/1000105370
Veröffentlicht am 29.01.2020
DOI: 10.1109/ECCE.2019.8913201
Cover der Publikation
Zugehörige Institution(en) am KIT Elektrotechnisches Institut (ETI)
Publikationstyp Proceedingsbeitrag
Publikationsmonat/-jahr 09.2019
Sprache Englisch
Identifikator ISBN: 978-1-72810-395-2
KITopen-ID: 1000105370
HGF-Programm 37.06.01 (POF III, LK 01) Networks and Storage Integration
Erschienen in 11th Annual IEEE Energy Conversion Congress and Exposition (ECCE 2019), Baltimore, MD, September 29 - October 3, 2019
Veranstaltung 11th IEEE Energy Conversion Congress and Exposition (ECCE 2019), Baltimore, MD, USA, 29.09.2019 – 03.10.2019
Verlag Institute of Electrical and Electronics Engineers (IEEE)
Seiten 3666–3673
Schlagwörter Quasi-Two-Level-Operation, Flying Capacitor, Multilevel-Converter, Medium voltage converter
Nachgewiesen in Scopus
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