A Computationally Efficient Model for Large-Scale Energy Storage Systems With Active Voltage Balancing in Modular Multilevel Converters

In this paper, a novel method for modeling and simulation of large-scale energy storage systems (ESS) is provided. Specifically, the model is developed for large-scale series connected supercapacitors (SCs) intended for power electronic applications. This method is especially useful for high voltage...

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Bibliographic Details
Main Authors: Asoodar, Mohsen, Nahalparvari, Mehrdad, Bakas, Panagiotis, Hasler, Jean-Philippe, Meng, Lexuan, Nee, Hans-Peter
Format: Conference Proceeding
Language:English
Subjects:
Computational modeling
Energy storage system
frequency control
Heuristic algorithms
Mathematical models
modeling
modular multilevel converter
Multilevel converters
Power measurement
Solids
supercapacitor
Supercapacitors
voltage balancing
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Summary:In this paper, a novel method for modeling and simulation of large-scale energy storage systems (ESS) is provided. Specifically, the model is developed for large-scale series connected supercapacitors (SCs) intended for power electronic applications. This method is especially useful for high voltage applications where a large number of series connected energy storage units (ESUs) are required. The proposed solution reduces a multi-node string of series connected SCs-together with their corresponding voltage balancing circuit-to a single unit with two electrical nodes. The proposed model is connected to the dc link of a three phase grid-connected modular multilevel converter (MMC). In this system, the effectiveness of the proposed model and the proposed voltage balancing scheme is demonstrated for a string comprising ten thousand series connected ESUs. The efficacy of the proposed model and the balancing algorithm is proven by simulations in the MATLAB/Simulink environment.
ISSN:2470-6647
DOI:10.1109/APEC43580.2023.10131336