RT Journal Article
T1 Analytical Derivation of Intersubmodule Active Power Disparity Limits in Modular Multilevel Converter-Based Battery Energy Storage Systems
A1 Liang, Gaowen
A1 Tafti, Hossein Dehghani
A1 Farivar, Glen G.
A1 Pou, Josep
A1 Townsend, Christopher D.
A1 Konstantinou, Georgios
A1 Ceballos, Salvador
AB Due to a dramatic increase in grid-connected renewable energy resources, energy storage systems 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 submodules (SMs) in the arms of an MMC-based BESS is necessary for certain applications. The main contribution of this article 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.
SN 0885-8993
YR 2021
FD 2021-03
LK https://hdl.handle.net/11556/4259
UL https://hdl.handle.net/11556/4259
LA eng
NO 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 , vol. 36 , no. 3 , 9160892 , pp. 2864-2874 . https://doi.org/10.1109/TPEL.2020.3014739
NO Publisher Copyright: © 1986-2012 IEEE.
NO Manuscript received December 12, 2019; revised May 5, 2020 and July 5, 2020; accepted July 30, 2020. Date of publication August 6, 2020; date of current version October 30, 2020. This work was supported by the Office of Naval Research U.S. under DUNS Code: 595886219. Recommended for publication by Associate Editor Prof. Axel Mertens. (Corresponding author: Gaowen Liang.) Gaowen Liang and Josep Pou are with the School of Electrical and Electronic Engineering, Nanyang Technological University Singapore 639798, Singapore (e-mail: gaowen001@e.ntu.edu.sg; josep.pou@ieee.org).
DS TECNALIA Publications
RD 28 jul 2024