Open AccessHybrid control approach for fast switching MMCs
Author(s) -
Schnarrenberger Mathias,
Bräckle Dennis,
Braun Michael
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.8022
Subject(s) - converters , modular design , voltage , computer science , digital signal processor , automatic frequency control , gate array , switching frequency , electronic engineering , control (management) , point (geometry) , digital signal processing , control theory (sociology) , electrical engineering , field programmable gate array , computer hardware , engineering , mathematics , telecommunications , geometry , artificial intelligence , operating system
This study presents a new hybrid control approach for different control and switching frequencies for converters of the modular multi‐level converter (MMC) family. Using this concept, it is possible to achieve a higher switching frequency and output voltage update frequency than the MMC control frequency. The closed‐control loop can be calculated on a digital signal processor in floating‐point arithmetic. Only the resulting arm voltages and output voltages must be calculated with the switching frequency, e.g. on a field programmable gate array in fixed‐point arithmetic.