Design Methodology Based on Prebuilt Components for Modular Multilevel Converters with Partial Integration of Energy Storage Systems
To provide ancillary services in HVDC applications, modular multilevel converters (MMCs) with integration of energy storage systems are a promising solution as they take advantage of the modularity and the controllability of the stored energy. In these solutions, an energy storage system is connecte...
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Format: | Article |
Language: | English |
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MDPI AG
2022-07-01
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Series: | Energies |
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Online Access: | https://www.mdpi.com/1996-1073/15/14/5006 |
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author | Florian Errigo Leandro De Oliveira Porto Florent Morel |
author_facet | Florian Errigo Leandro De Oliveira Porto Florent Morel |
author_sort | Florian Errigo |
collection | DOAJ |
description | To provide ancillary services in HVDC applications, modular multilevel converters (MMCs) with integration of energy storage systems are a promising solution as they take advantage of the modularity and the controllability of the stored energy. In these solutions, an energy storage system is connected to the DC capacitor of a submodule (SM) to make an energy storage submodule (ES-SM). An MMC with partial integration (MMC-PIES) is an MMC with each arm made of a mix of SMs and ES-SMs. In this paper, we propose a novel design methodology for these converters considering they are built based on existing prebuilt submodules, while design methodologies in the literature consider the SM and ES-SM characteristics to be degrees of freedom. Therefore, the proposed approach is closer to an industrial standpoint and computes the minimum number of ES-SMs to comply with requirements. We also include a new optimization method for the circulating currents needed to balance the energy in the SM and ES-SM capacitors. Design scenarios are presented. The results show that the value of the DC capacitance and the current limitation of the switches highly influence the design, restricting the possible operating points. In addition, half-bridge ES-SMs seem to be a more promising solution than full-bridge ES-SMs, reducing the number of ES-SMs. |
first_indexed | 2024-03-09T03:28:37Z |
format | Article |
id | doaj.art-a085d143045d4bd482a9281dc2edbbf2 |
institution | Directory Open Access Journal |
issn | 1996-1073 |
language | English |
last_indexed | 2024-03-09T03:28:37Z |
publishDate | 2022-07-01 |
publisher | MDPI AG |
record_format | Article |
series | Energies |
spelling | doaj.art-a085d143045d4bd482a9281dc2edbbf22023-12-03T14:58:20ZengMDPI AGEnergies1996-10732022-07-011514500610.3390/en15145006Design Methodology Based on Prebuilt Components for Modular Multilevel Converters with Partial Integration of Energy Storage SystemsFlorian Errigo0Leandro De Oliveira Porto1Florent Morel2SuperGrid Institute SAS, 23 rue Cyprian, 69100 Villeurbanne, FranceSuperGrid Institute SAS, 23 rue Cyprian, 69100 Villeurbanne, FranceSuperGrid Institute SAS, 23 rue Cyprian, 69100 Villeurbanne, FranceTo provide ancillary services in HVDC applications, modular multilevel converters (MMCs) with integration of energy storage systems are a promising solution as they take advantage of the modularity and the controllability of the stored energy. In these solutions, an energy storage system is connected to the DC capacitor of a submodule (SM) to make an energy storage submodule (ES-SM). An MMC with partial integration (MMC-PIES) is an MMC with each arm made of a mix of SMs and ES-SMs. In this paper, we propose a novel design methodology for these converters considering they are built based on existing prebuilt submodules, while design methodologies in the literature consider the SM and ES-SM characteristics to be degrees of freedom. Therefore, the proposed approach is closer to an industrial standpoint and computes the minimum number of ES-SMs to comply with requirements. We also include a new optimization method for the circulating currents needed to balance the energy in the SM and ES-SM capacitors. Design scenarios are presented. The results show that the value of the DC capacitance and the current limitation of the switches highly influence the design, restricting the possible operating points. In addition, half-bridge ES-SMs seem to be a more promising solution than full-bridge ES-SMs, reducing the number of ES-SMs.https://www.mdpi.com/1996-1073/15/14/5006high-voltage direct current (HVDC)power convertermodular multilevel converter (MMC)ancillary servicesenergy storage systemdesign methodology |
spellingShingle | Florian Errigo Leandro De Oliveira Porto Florent Morel Design Methodology Based on Prebuilt Components for Modular Multilevel Converters with Partial Integration of Energy Storage Systems Energies high-voltage direct current (HVDC) power converter modular multilevel converter (MMC) ancillary services energy storage system design methodology |
title | Design Methodology Based on Prebuilt Components for Modular Multilevel Converters with Partial Integration of Energy Storage Systems |
title_full | Design Methodology Based on Prebuilt Components for Modular Multilevel Converters with Partial Integration of Energy Storage Systems |
title_fullStr | Design Methodology Based on Prebuilt Components for Modular Multilevel Converters with Partial Integration of Energy Storage Systems |
title_full_unstemmed | Design Methodology Based on Prebuilt Components for Modular Multilevel Converters with Partial Integration of Energy Storage Systems |
title_short | Design Methodology Based on Prebuilt Components for Modular Multilevel Converters with Partial Integration of Energy Storage Systems |
title_sort | design methodology based on prebuilt components for modular multilevel converters with partial integration of energy storage systems |
topic | high-voltage direct current (HVDC) power converter modular multilevel converter (MMC) ancillary services energy storage system design methodology |
url | https://www.mdpi.com/1996-1073/15/14/5006 |
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