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Multiport DC–DC–AC Modular Multilevel Converters For Hybrid AC/DC Power Systems.
- Source :
-
IEEE Transactions on Power Delivery . Feb2020, Vol. 35 Issue 1, p408-419. 12p. - Publication Year :
- 2020
-
Abstract
- Hybrid ac/dc power systems will rely on power electronics to enable controlled energy exchange between different dc and ac systems. Multiport dc–dc–ac (MP-DC2AC) converters offer the ability to exchange power between two dc systems and an ac system using a single converter structure. Potential benefits include reduced energy conversion stages and a more compact station footprint. To date, limited information is available on modeling, operation, and control of MP-DC2AC converters suitable for HVDC and MVDC applications. This paper helps to fill this gap by presenting a generalized modeling and control framework for two yet unexplored MP-DC2AC modular multilevel converters. Based on derived analytical models of internal power transfer mechanisms, a dynamic controller is proposed that allows independent control of port power flows while keeping capacitor voltages regulated. Results are validated by extensive time-domain simulations. A comprehensive comparative analysis between four different MP-DC2AC topologies is carried out. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08858977
- Volume :
- 35
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Power Delivery
- Publication Type :
- Academic Journal
- Accession number :
- 141418576
- Full Text :
- https://doi.org/10.1109/TPWRD.2019.2927324