Print Email Facebook Twitter Battery Storage System as Power Unbalance Redistributor in Distribution Grids Based on Three Legs Four Wire Voltage Source Converter Title Battery Storage System as Power Unbalance Redistributor in Distribution Grids Based on Three Legs Four Wire Voltage Source Converter Author Stecca, M. (TU Delft DC systems, Energy conversion & Storage) Soeiro, Thiago B. (TU Delft DC systems, Energy conversion & Storage) Iyer, A.K. (TU Delft DC systems, Energy conversion & Storage) Bauer, P. (TU Delft DC systems, Energy conversion & Storage) Palensky, P. (TU Delft Intelligent Electrical Power Grids) Date 2022 Abstract This article discusses the application of battery energy storage systems (BESSs) as power redistributors in three-phase distribution grids as an add-on functionality to typical BESS applications, such as congestion management and energy arbitrage. Combining those ancillary services into a single power unit is not yet performed in practice but may constitute an emerging business opportunity to increase the BESS revenues. The unbalanced operation of the BESS voltage source converter (VSC) leads to the circulation of low-frequency current harmonics in the dc-link through the capacitors and the battery cells. Therefore, it is particularly interesting whether relatively large 50- and 100-Hz currents can safely circulate within these components. Analytical modeling and design guidelines for the dc-link of a three-leg four-wire two-level VSC operating under unbalanced loads are detailed. Furthermore, a low-power VSC prototype is used to demonstrate the working principle of the BESS, providing power unbalance redistribution and symmetric power exchange. Additionally, the ICR18650-26F Lithium-ion cells are cycled to reach end-of-life with different current profiles and C-ratings. The analysis shows that charging with a 100 Hz ripple superimposed to the dc current leads to a 10% increment in degradation. Subject Battery energy storage systemdistribution gridpower redistributorunbalanced loadvoltage source converters To reference this document use: http://resolver.tudelft.nl/uuid:25471cab-7d6b-4617-9a84-c82cc4040427 DOI https://doi.org/10.1109/JESTPE.2022.3199093 Embargo date 2023-07-01 ISSN 2168-6777 Source IEEE Journal of Emerging and Selected Topics in Power Electronics, 10 (6), 7601-7614 Bibliographical note Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2022 M. Stecca, Thiago B. Soeiro, A.K. Iyer, P. Bauer, P. Palensky Files PDF Battery_Storage_System_as ... verter.pdf 6.68 MB Close viewer /islandora/object/uuid:25471cab-7d6b-4617-9a84-c82cc4040427/datastream/OBJ/view