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Title: Analytical derivation of intersubmodule active power disparity limits in modular multilevel converter-based battery energy storage systems
Authors: Liang, Gaowen
Tafti, Hossein Dehghani
Farivar, Glen G.
Pou, Josep
Townsend, Christopher D.
Konstantinou, Georgios
Ceballos, Salvador
Keywords: Engineering::Electrical and electronic engineering::Power electronics
Issue Date: 2020
Source: Liang, G., Tafti, H. D., Farivar, G. G., Pou, J., Townsend, C. D., Konstantinou, G., & Ceballos, S. (2021). Analytical derivation of intersubmodule active power disparity limits in modular multilevel converter-based battery energy storage systems. IEEE Transactions on Power Electronics, 36(3), 2864-2874. doi:10.1109/TPEL.2020.3014739
Project: 595886219.
Journal: IEEE Transactions on Power Electronics
Abstract: Due to a dramatic increase in grid-connected renewable energy resources, energy storage systems (ESSs) are interesting and important for future power systems, among which the modular multilevel converter (MMC)-based battery energy storage systems (BESSs) are one of the most modular, efficient and flexible topologies. Uneven active power distribution among sub-modules (SMs) in the arms of an MMC-based BESS is necessary for certain applications. The main contribution of this paper is to present a general analysis of the inter-SM active power disparity problem which incorporates the inherent operational constraints of the MMC converter. An analytical method to derive inter-SM active power disparity limits is introduced. The proposed analysis can help facilitate the design of MMC-based BESS for applications such as recycled batteries and hybrid battery chemistries, which can both require significant inter-SM active power disparity. The analysis formulates a criteria vector and criterion value that describes whether an MMC-based BESS is capable of supplying demanded output powers while subject to inter-SM active power disparity. Simulation and experimental results are obtained on a single-phase system with varying numbers of SMs per arm, which verifies the feasibility and generality of the proposed analytical method.
ISSN: 0885-8993
DOI: 10.1109/TPEL.2020.3014739
Rights: © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work is available at:
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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