Improved sliding mode direct power control for low-carbon oriented MMC-HVDC of asymmetric offshore wind power flexible systems
The modular multilevel converter based high voltage direct current (MMC-HVDC) is a dynamic power balancing system. The control system of MMC generally adopts a dual closed-loop vector control strategy based on the traditional instantaneous power model under asymmetric grid state, which has complex c...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2024-02-01
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| Series: | Frontiers in Energy Research |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fenrg.2024.1373253/full |
| _version_ | 1797311684717576192 |
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| author | Feng Li Sui Peng Yanfeng Wang Hao Yu Zhicong Huang Zhiheng Zhao |
| author_facet | Feng Li Sui Peng Yanfeng Wang Hao Yu Zhicong Huang Zhiheng Zhao |
| author_sort | Feng Li |
| collection | DOAJ |
| description | The modular multilevel converter based high voltage direct current (MMC-HVDC) is a dynamic power balancing system. The control system of MMC generally adopts a dual closed-loop vector control strategy based on the traditional instantaneous power model under asymmetric grid state, which has complex control structure and low control accuracy. This paper introduces a flexible instantaneous power model and establishes a general power equation with active power and new reactive power as control objects. Based on this, an improved sliding-mode MMC-HVDC direct power control strategy based on the new instantaneous power model is proposed which combines the flexible instantaneous power model and the improved sliding-mode control method to eliminate the twice grid-frequency ripples in both active and reactive power under asymmetric grid states. Furthermore, it omits the inner-loop controller and power compensation terms while optimizing the control structure. Simulation results show that the proposed method has better dynamic responsiveness, control accuracy and robustness under operating conditions such as asymmetric grid state and parameter perturbation which can better exploit the advantages of the flexible instantaneous power model. |
| first_indexed | 2024-03-08T02:03:16Z |
| format | Article |
| id | doaj.art-ecb91d9109334572be3cd166ccd1bcd7 |
| institution | Directory Open Access Journal |
| issn | 2296-598X |
| language | English |
| last_indexed | 2024-03-08T02:03:16Z |
| publishDate | 2024-02-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Energy Research |
| spelling | doaj.art-ecb91d9109334572be3cd166ccd1bcd72024-02-14T04:24:55ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2024-02-011210.3389/fenrg.2024.13732531373253Improved sliding mode direct power control for low-carbon oriented MMC-HVDC of asymmetric offshore wind power flexible systemsFeng Li0Sui Peng1Yanfeng Wang2Hao Yu3Zhicong Huang4Zhiheng Zhao5Grid Planning and Research Center, Guangdong Power Grid Corporation, CSG, Guangzhou, ChinaGrid Planning and Research Center, Guangdong Power Grid Corporation, CSG, Guangzhou, ChinaGrid Planning and Research Center, Guangdong Power Grid Corporation, CSG, Guangzhou, ChinaGrid Planning and Research Center, Guangdong Power Grid Corporation, CSG, Guangzhou, ChinaSchool of Intelligent Engineering, South China University of Technology, Guangzhou, ChinaCollege of Information Science and Engineering, Northeastern University, Shenyang, ChinaThe modular multilevel converter based high voltage direct current (MMC-HVDC) is a dynamic power balancing system. The control system of MMC generally adopts a dual closed-loop vector control strategy based on the traditional instantaneous power model under asymmetric grid state, which has complex control structure and low control accuracy. This paper introduces a flexible instantaneous power model and establishes a general power equation with active power and new reactive power as control objects. Based on this, an improved sliding-mode MMC-HVDC direct power control strategy based on the new instantaneous power model is proposed which combines the flexible instantaneous power model and the improved sliding-mode control method to eliminate the twice grid-frequency ripples in both active and reactive power under asymmetric grid states. Furthermore, it omits the inner-loop controller and power compensation terms while optimizing the control structure. Simulation results show that the proposed method has better dynamic responsiveness, control accuracy and robustness under operating conditions such as asymmetric grid state and parameter perturbation which can better exploit the advantages of the flexible instantaneous power model.https://www.frontiersin.org/articles/10.3389/fenrg.2024.1373253/fullMMC-HVDCasymmetrical grid statesliding mode controlflexible instantaneous power modelrobust control |
| spellingShingle | Feng Li Sui Peng Yanfeng Wang Hao Yu Zhicong Huang Zhiheng Zhao Improved sliding mode direct power control for low-carbon oriented MMC-HVDC of asymmetric offshore wind power flexible systems Frontiers in Energy Research MMC-HVDC asymmetrical grid state sliding mode control flexible instantaneous power model robust control |
| title | Improved sliding mode direct power control for low-carbon oriented MMC-HVDC of asymmetric offshore wind power flexible systems |
| title_full | Improved sliding mode direct power control for low-carbon oriented MMC-HVDC of asymmetric offshore wind power flexible systems |
| title_fullStr | Improved sliding mode direct power control for low-carbon oriented MMC-HVDC of asymmetric offshore wind power flexible systems |
| title_full_unstemmed | Improved sliding mode direct power control for low-carbon oriented MMC-HVDC of asymmetric offshore wind power flexible systems |
| title_short | Improved sliding mode direct power control for low-carbon oriented MMC-HVDC of asymmetric offshore wind power flexible systems |
| title_sort | improved sliding mode direct power control for low carbon oriented mmc hvdc of asymmetric offshore wind power flexible systems |
| topic | MMC-HVDC asymmetrical grid state sliding mode control flexible instantaneous power model robust control |
| url | https://www.frontiersin.org/articles/10.3389/fenrg.2024.1373253/full |
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