Proposed Adaptive Control Strategy of Modular Multilevel Converter Based on Virtual Synchronous Generator
In the context of weak grids, vector-controlled modular multilevel converters (MMC) suffer from issues such as low inertia, low damping, and poor system stability. To address these challenges, this paper proposes a control strategy for virtual synchronous generators (VSGs) based on a fuzzy logic con...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/12/20/4274 |
| _version_ | 1797574027353522176 |
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| author | Dao Shi Ling Lv Xuesong Wang Liang Zhang |
| author_facet | Dao Shi Ling Lv Xuesong Wang Liang Zhang |
| author_sort | Dao Shi |
| collection | DOAJ |
| description | In the context of weak grids, vector-controlled modular multilevel converters (MMC) suffer from issues such as low inertia, low damping, and poor system stability. To address these challenges, this paper proposes a control strategy for virtual synchronous generators (VSGs) based on a fuzzy logic control algorithm. The conFtrol strategy leverages the capability of fuzzy algorithms to handle the fuzziness and uncertainty of input signals, enabling adaptive control of the virtual inertia and damping coefficient of the VSG, thus empowering the system with autonomous frequency and voltage regulation capabilities. When the system deviates from or approaches the stable operating point, increasing or decreasing the virtual inertia allows for dynamic adjustment of the virtual inertia and damping coefficient in response to load fluctuations during MMC operation. Through simulation verification, it is demonstrated that the proposed control method provides inertia support to the system during sudden changes in active load during MMC grid-connected operation. This control method achieves adaptive adjustment of the virtual inertia and damping coefficient, effectively enhancing system stability. The simulation results validate the effectiveness and correctness of the proposed control strategy. |
| first_indexed | 2024-03-10T21:17:20Z |
| format | Article |
| id | doaj.art-302e3a3a2646404dafc997baa390dbf0 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-10T21:17:20Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-302e3a3a2646404dafc997baa390dbf02023-11-19T16:19:19ZengMDPI AGElectronics2079-92922023-10-011220427410.3390/electronics12204274Proposed Adaptive Control Strategy of Modular Multilevel Converter Based on Virtual Synchronous GeneratorDao Shi0Ling Lv1Xuesong Wang2Liang Zhang3School of Electrical Engineering, Northeast Electric Power University, Jilin 132012, ChinaSchool of Electrical Engineering, Northeast Electric Power University, Jilin 132012, ChinaCangzhou Power Supply Branch, State Grid Hebei Electric Power Corporation, Cangzhou 061000, ChinaSchool of Electrical Engineering, Northeast Electric Power University, Jilin 132012, ChinaIn the context of weak grids, vector-controlled modular multilevel converters (MMC) suffer from issues such as low inertia, low damping, and poor system stability. To address these challenges, this paper proposes a control strategy for virtual synchronous generators (VSGs) based on a fuzzy logic control algorithm. The conFtrol strategy leverages the capability of fuzzy algorithms to handle the fuzziness and uncertainty of input signals, enabling adaptive control of the virtual inertia and damping coefficient of the VSG, thus empowering the system with autonomous frequency and voltage regulation capabilities. When the system deviates from or approaches the stable operating point, increasing or decreasing the virtual inertia allows for dynamic adjustment of the virtual inertia and damping coefficient in response to load fluctuations during MMC operation. Through simulation verification, it is demonstrated that the proposed control method provides inertia support to the system during sudden changes in active load during MMC grid-connected operation. This control method achieves adaptive adjustment of the virtual inertia and damping coefficient, effectively enhancing system stability. The simulation results validate the effectiveness and correctness of the proposed control strategy.https://www.mdpi.com/2079-9292/12/20/4274flexible DC transmissionmodular multilevel convertervirtual synchronous generatorfuzzy logic control algorithmparameter adaptation |
| spellingShingle | Dao Shi Ling Lv Xuesong Wang Liang Zhang Proposed Adaptive Control Strategy of Modular Multilevel Converter Based on Virtual Synchronous Generator Electronics flexible DC transmission modular multilevel converter virtual synchronous generator fuzzy logic control algorithm parameter adaptation |
| title | Proposed Adaptive Control Strategy of Modular Multilevel Converter Based on Virtual Synchronous Generator |
| title_full | Proposed Adaptive Control Strategy of Modular Multilevel Converter Based on Virtual Synchronous Generator |
| title_fullStr | Proposed Adaptive Control Strategy of Modular Multilevel Converter Based on Virtual Synchronous Generator |
| title_full_unstemmed | Proposed Adaptive Control Strategy of Modular Multilevel Converter Based on Virtual Synchronous Generator |
| title_short | Proposed Adaptive Control Strategy of Modular Multilevel Converter Based on Virtual Synchronous Generator |
| title_sort | proposed adaptive control strategy of modular multilevel converter based on virtual synchronous generator |
| topic | flexible DC transmission modular multilevel converter virtual synchronous generator fuzzy logic control algorithm parameter adaptation |
| url | https://www.mdpi.com/2079-9292/12/20/4274 |
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