Self-Balancing Supercapacitor Energy Storage System Based on a Modular Multilevel Converter

Energy Storage Systems (ESS) are an attractive solution in environments with a high amount of renewable energy sources, as they can improve the power quality in such places and if required, can extend the integration of more renewable sources of energy. If a large amount of power is needed, then sup...

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Main Authors: Fernando Davalos Hernandez, Rahim Samanbakhsh, Federico Martin Ibanez, Fernando Martin
Format: Article
Language:English
Published: MDPI AG 2022-01-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/15/1/338
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author Fernando Davalos Hernandez
Rahim Samanbakhsh
Federico Martin Ibanez
Fernando Martin
author_facet Fernando Davalos Hernandez
Rahim Samanbakhsh
Federico Martin Ibanez
Fernando Martin
author_sort Fernando Davalos Hernandez
collection DOAJ
description Energy Storage Systems (ESS) are an attractive solution in environments with a high amount of renewable energy sources, as they can improve the power quality in such places and if required, can extend the integration of more renewable sources of energy. If a large amount of power is needed, then supercapacitors are viable energy storage devices due to their specific power, allowing response times that are in the range of milliseconds to seconds. This paper details the design of an ESS that is based on a modular multilevel converter (MMC) with bidirectional power flow, which reduces the number of cascaded stages and allows the supercapacitors SCs to be connected to the grid to perform high-power transfers. A traditional ESS has four main stages or subsystems: the energy storage device, the balancing system, and the DC/DC and DC/AC converters. The proposed ESS can perform all of those functions in a single circuit by adopting an MMC topology, as each submodule (SM) can self-balance during energy injection or grid absorption. This article analyses the structure in both power flow directions and in the control loops and presents a prototype that is used to validate the design.
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spelling doaj.art-95ea0769265740a9ba53537176a8fb702023-11-23T11:29:09ZengMDPI AGEnergies1996-10732022-01-0115133810.3390/en15010338Self-Balancing Supercapacitor Energy Storage System Based on a Modular Multilevel ConverterFernando Davalos Hernandez0Rahim Samanbakhsh1Federico Martin Ibanez2Fernando Martin3Department of Electrical Engineering, Skolkovo Institute of Science and Technology, 143026 Moscow, RussiaDepartment of Electrical Engineering, Skolkovo Institute of Science and Technology, 143026 Moscow, RussiaDepartment of Electrical Engineering, Skolkovo Institute of Science and Technology, 143026 Moscow, RussiaCEIT-Basque Research and Technology Alliance (BRTA), Manuel Lardizabal 15, 20018 Donostia, SpainEnergy Storage Systems (ESS) are an attractive solution in environments with a high amount of renewable energy sources, as they can improve the power quality in such places and if required, can extend the integration of more renewable sources of energy. If a large amount of power is needed, then supercapacitors are viable energy storage devices due to their specific power, allowing response times that are in the range of milliseconds to seconds. This paper details the design of an ESS that is based on a modular multilevel converter (MMC) with bidirectional power flow, which reduces the number of cascaded stages and allows the supercapacitors SCs to be connected to the grid to perform high-power transfers. A traditional ESS has four main stages or subsystems: the energy storage device, the balancing system, and the DC/DC and DC/AC converters. The proposed ESS can perform all of those functions in a single circuit by adopting an MMC topology, as each submodule (SM) can self-balance during energy injection or grid absorption. This article analyses the structure in both power flow directions and in the control loops and presents a prototype that is used to validate the design.https://www.mdpi.com/1996-1073/15/1/338renewable energy sourcessupercapacitorsenergy storage system
spellingShingle Fernando Davalos Hernandez
Rahim Samanbakhsh
Federico Martin Ibanez
Fernando Martin
Self-Balancing Supercapacitor Energy Storage System Based on a Modular Multilevel Converter
Energies
renewable energy sources
supercapacitors
energy storage system
title Self-Balancing Supercapacitor Energy Storage System Based on a Modular Multilevel Converter
title_full Self-Balancing Supercapacitor Energy Storage System Based on a Modular Multilevel Converter
title_fullStr Self-Balancing Supercapacitor Energy Storage System Based on a Modular Multilevel Converter
title_full_unstemmed Self-Balancing Supercapacitor Energy Storage System Based on a Modular Multilevel Converter
title_short Self-Balancing Supercapacitor Energy Storage System Based on a Modular Multilevel Converter
title_sort self balancing supercapacitor energy storage system based on a modular multilevel converter
topic renewable energy sources
supercapacitors
energy storage system
url https://www.mdpi.com/1996-1073/15/1/338
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AT rahimsamanbakhsh selfbalancingsupercapacitorenergystoragesystembasedonamodularmultilevelconverter
AT federicomartinibanez selfbalancingsupercapacitorenergystoragesystembasedonamodularmultilevelconverter
AT fernandomartin selfbalancingsupercapacitorenergystoragesystembasedonamodularmultilevelconverter