Low-Voltage Fault Ride Through of the Modular Multilevel Converter in a Battery Energy Storage System Connected Directly to the Medium Voltage Grid
Open access
Datum
2014Typ
- Conference Paper
ETH Bibliographie
yes
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Abstract
Nowadays, even small and medium sized power generators are required to ride through low-voltage faults without disconnecting themselves from the grid. To the modular multilevel converter (MMC) in a battery energy storage system based on split batteries (sBESS), this presents a unique requirement: In case of a low-voltage grid-fault, the arm voltages leave their steady-state trajectory which can lead to undervoltage or overvoltage in the modules, provoking an unacceptable shutdown of the whole converter. This paper presents a new control strategy to support the arm voltages by making use of the split batteries in case of a fault. The converter can ride through consecutive grid-faults while continuing to supply a current to support the grid and can immediately resume operation after the fault is cleared. Mehr anzeigen
Persistenter Link
https://doi.org/10.3929/ethz-b-000089520Publikationsstatus
publishedExterne Links
Buchtitel
2014 16th European Conference on Power Electronics and Applications (EPE'14-ECCE Europe)Seiten / Artikelnummer
Verlag
IEEEKonferenz
Organisationseinheit
03889 - Biela, Jürgen / Biela, Jürgen
ETH Bibliographie
yes
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