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Precharging and DC Fault Ride-Through of Hybrid MMC-Based HVDC Systems.
- Source :
-
IEEE Transactions on Power Delivery . Jun2015, Vol. 30 Issue 3, p1298-1306. 9p. - Publication Year :
- 2015
-
Abstract
- Compared to half-bridge-based modular multilevel converters (MMCs), full-bridge-based systems have the advantage of blocking the dc fault, but at the expense of increased power semiconductors and power losses. In view of the relationships among ac/dc voltages and currents in full-bridge-based MMC with the negative voltage state, this paper provides a detailed analysis on the link between capacitor voltage variation and the maximum modulation index. A hybrid MMC, consisting of mixed half-bridge and full-bridge circuits to combine their respective advantages is investigated in terms of its precharging process and transient dc fault ride-through capability. Simulation and experiment results demonstrate the feasibility and validity of the proposed strategy for a full-bridge-based MMC and the hybrid MMC. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08858977
- Volume :
- 30
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Power Delivery
- Publication Type :
- Academic Journal
- Accession number :
- 102874818
- Full Text :
- https://doi.org/10.1109/TPWRD.2014.2360042