The Alternate Arm Converter "Extended-Overlap" Mode: AC Faults

The Alternate Arm Converter "Extended-Overlap" Mode: AC Faults

This article presents ac fault ride-through strategies for the "extended-overlap" operating mode of the alternate arm converter (AAC), which is a type of modular multilevel voltage source converter that has been proposed for HVdc transmission applications. The AAC offers several benefits o...

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Veröffentlicht in:IEEE transactions on power electronics 2021-05, Vol.36 (5), p.5371-5388
Hauptverfasser: Farr, Ewan M., Feldman, Ralph, Clare, Jon C., Jasim, Omar F.
Format: Artikel
Sprache:eng
Schlagworte:
Capacitance
Capacitors
Circuit faults
Electric bridges
Electric converters
HVdc converters
HVDC transmission
multilevel systems
power conversion
Power system stability
Topology
Valves
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Zusammenfassung:This article presents ac fault ride-through strategies for the "extended-overlap" operating mode of the alternate arm converter (AAC), which is a type of modular multilevel voltage source converter that has been proposed for HVdc transmission applications. The AAC offers several benefits over the half-bridge modular multilevel converter, such as requiring fewer submodules with a smaller capacitance and providing dc fault ride-through capability. Novel symmetrical and asymmetrical ac fault ride-through strategies are described and these strategies are experimentally validated by using a small scale prototype.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2020.3026568