Power Imbalance Analysis of Modular Multilevel Converter With Distributed Energy Systems
The modular multilevel converter (MMC) can integrate distributed energy systems (DES), such as a battery energy storage system, to expand its functionalities and carry out multiple simultaneous tasks. However, a DES induces power imbalances within the MMC, which affects the operating currents and vo...
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| Format: | Article |
| Language: | English |
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IEEE
2024-01-01
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| Series: | IEEE Open Journal of the Industrial Electronics Society |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10433267/ |
| _version_ | 1797272706465398784 |
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| author | Tomas Salvadores Javier Pereda Felix Rojas |
| author_facet | Tomas Salvadores Javier Pereda Felix Rojas |
| author_sort | Tomas Salvadores |
| collection | DOAJ |
| description | The modular multilevel converter (MMC) can integrate distributed energy systems (DES), such as a battery energy storage system, to expand its functionalities and carry out multiple simultaneous tasks. However, a DES induces power imbalances within the MMC, which affects the operating currents and voltages of the converter. This phenomenon has been partially covered in recent works, but an analytical analysis has not yet been carried out to see the behavior and implications in different MMC-DES applications. This article introduces a novel analytical analysis of the power imbalances between MMC clusters. It pioneers the development of general equations and imbalance capability metrics, enabling the assessment of maximum currents and voltages supported by the MMC clusters. The developed tools allow the evaluation of any MMC-DES application regarding the current and voltage rating requirements of MMC clusters. The analysis shows that the MMC operating mode can substantially restrain or enlarge its imbalance capacity, affecting its suitability for different DES applications. While it needs around 33% current overrating in the worst imbalances, under some operating modes it can reach most imbalances without requiring current overrating. The ac compensation mode is much more capable of achieving imbalances than the dc compensation mode, reaching 88.37% and 16.74% of the imbalance points, respectively, without requiring any overrating. |
| first_indexed | 2024-03-07T14:32:14Z |
| format | Article |
| id | doaj.art-ab6bfa37c5434e19a2d6d219865476a4 |
| institution | Directory Open Access Journal |
| issn | 2644-1284 |
| language | English |
| last_indexed | 2024-03-07T14:32:14Z |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of the Industrial Electronics Society |
| spelling | doaj.art-ab6bfa37c5434e19a2d6d219865476a42024-03-06T00:01:50ZengIEEEIEEE Open Journal of the Industrial Electronics Society2644-12842024-01-01510912110.1109/OJIES.2024.336116710433267Power Imbalance Analysis of Modular Multilevel Converter With Distributed Energy SystemsTomas Salvadores0https://orcid.org/0000-0002-9659-6106Javier Pereda1https://orcid.org/0000-0002-3407-5233Felix Rojas2https://orcid.org/0000-0001-6145-2826Department of Electrical Engineering and UC Energy Research Center, Pontificia Universidad Católica de Chile, Santiago, ChileDepartment of Electrical Engineering and UC Energy Research Center, Pontificia Universidad Católica de Chile, Santiago, ChileDepartment of Electrical Engineering and UC Energy Research Center, Pontificia Universidad Católica de Chile, Santiago, ChileThe modular multilevel converter (MMC) can integrate distributed energy systems (DES), such as a battery energy storage system, to expand its functionalities and carry out multiple simultaneous tasks. However, a DES induces power imbalances within the MMC, which affects the operating currents and voltages of the converter. This phenomenon has been partially covered in recent works, but an analytical analysis has not yet been carried out to see the behavior and implications in different MMC-DES applications. This article introduces a novel analytical analysis of the power imbalances between MMC clusters. It pioneers the development of general equations and imbalance capability metrics, enabling the assessment of maximum currents and voltages supported by the MMC clusters. The developed tools allow the evaluation of any MMC-DES application regarding the current and voltage rating requirements of MMC clusters. The analysis shows that the MMC operating mode can substantially restrain or enlarge its imbalance capacity, affecting its suitability for different DES applications. While it needs around 33% current overrating in the worst imbalances, under some operating modes it can reach most imbalances without requiring current overrating. The ac compensation mode is much more capable of achieving imbalances than the dc compensation mode, reaching 88.37% and 16.74% of the imbalance points, respectively, without requiring any overrating.https://ieeexplore.ieee.org/document/10433267/Ac–dc power convertersmodular multilevel converter (MMC)power imbalancebattery energy storage system (BESS)current ratingoperation limit |
| spellingShingle | Tomas Salvadores Javier Pereda Felix Rojas Power Imbalance Analysis of Modular Multilevel Converter With Distributed Energy Systems IEEE Open Journal of the Industrial Electronics Society Ac–dc power converters modular multilevel converter (MMC) power imbalance battery energy storage system (BESS) current rating operation limit |
| title | Power Imbalance Analysis of Modular Multilevel Converter With Distributed Energy Systems |
| title_full | Power Imbalance Analysis of Modular Multilevel Converter With Distributed Energy Systems |
| title_fullStr | Power Imbalance Analysis of Modular Multilevel Converter With Distributed Energy Systems |
| title_full_unstemmed | Power Imbalance Analysis of Modular Multilevel Converter With Distributed Energy Systems |
| title_short | Power Imbalance Analysis of Modular Multilevel Converter With Distributed Energy Systems |
| title_sort | power imbalance analysis of modular multilevel converter with distributed energy systems |
| topic | Ac–dc power converters modular multilevel converter (MMC) power imbalance battery energy storage system (BESS) current rating operation limit |
| url | https://ieeexplore.ieee.org/document/10433267/ |
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