The Unbalanced Control Research of Fractional-Order Cascaded H-Bridge Multilevel STATCOM
Recent research on fractional-order cascaded H-bridge multilevel static compensator (FCHM-STATCOM) indicates that it has better performance than the traditional cascaded H-bridge multilevel static compensator (CHM-STATCOM). The existing FCHM-STATCOM control system lacks some special control links fo...
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MDPI AG
2025-01-01
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| author | Junhua Xu Guopeng He Songqin Tang Zheng Gong Chunwei Wang Yue Lan |
| author_facet | Junhua Xu Guopeng He Songqin Tang Zheng Gong Chunwei Wang Yue Lan |
| author_sort | Junhua Xu |
| collection | DOAJ |
| description | Recent research on fractional-order cascaded H-bridge multilevel static compensator (FCHM-STATCOM) indicates that it has better performance than the traditional cascaded H-bridge multilevel static compensator (CHM-STATCOM). The existing FCHM-STATCOM control system lacks some special control links for dealing with unbalanced operative situations, which is demanded by power systems. This paper improves the existing FCHM-STATCOM control system to satisfy the demand for power systems, creating the potential for it to be applied in the electrical industry. The improvement of the FCHM-STATCOM control system is based on traditional CHM-STATCOM control systems, introducing special control loops for unbalanced operative situations. The improved FCHM-STATCOM control system constructed in this paper consists of an outer control loop that can apply special strategies for different control objectives, two inner control loops, respectively, for positive- and negative-sequence currents, and an inter-phase balancing control loop for balancing its arm operation. At the end of this paper, the results of digital simulations verify the FCHM-STATCOM complete control system’s capacity to regulate its negative-sequence currents and balance its arm operation to deal with unbalanced operative situations. Moreover, based on different strategies, the control system shows effectiveness in eliminating power oscillations and current balancing. |
| format | Article |
| id | doaj-art-7180f1dfe39344f28f2e557fa14fe62f |
| institution | Kabale University |
| issn | 2504-3110 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fractal and Fractional |
| spelling | doaj-art-7180f1dfe39344f28f2e557fa14fe62f2025-01-24T13:33:25ZengMDPI AGFractal and Fractional2504-31102025-01-01913010.3390/fractalfract9010030The Unbalanced Control Research of Fractional-Order Cascaded H-Bridge Multilevel STATCOMJunhua Xu0Guopeng He1Songqin Tang2Zheng Gong3Chunwei Wang4Yue Lan5School of Electrical Engineering, Guangxi University, Nanning 530004, ChinaSchool of Electrical Engineering, Guangxi University, Nanning 530004, ChinaSchool of Electrical Engineering, Guangxi University, Nanning 530004, ChinaSchool of Electrical Engineering, Guangxi University, Nanning 530004, ChinaSchool of Electrical Engineering, Guangxi University, Nanning 530004, ChinaSchool of Electrical Engineering, Guangxi University, Nanning 530004, ChinaRecent research on fractional-order cascaded H-bridge multilevel static compensator (FCHM-STATCOM) indicates that it has better performance than the traditional cascaded H-bridge multilevel static compensator (CHM-STATCOM). The existing FCHM-STATCOM control system lacks some special control links for dealing with unbalanced operative situations, which is demanded by power systems. This paper improves the existing FCHM-STATCOM control system to satisfy the demand for power systems, creating the potential for it to be applied in the electrical industry. The improvement of the FCHM-STATCOM control system is based on traditional CHM-STATCOM control systems, introducing special control loops for unbalanced operative situations. The improved FCHM-STATCOM control system constructed in this paper consists of an outer control loop that can apply special strategies for different control objectives, two inner control loops, respectively, for positive- and negative-sequence currents, and an inter-phase balancing control loop for balancing its arm operation. At the end of this paper, the results of digital simulations verify the FCHM-STATCOM complete control system’s capacity to regulate its negative-sequence currents and balance its arm operation to deal with unbalanced operative situations. Moreover, based on different strategies, the control system shows effectiveness in eliminating power oscillations and current balancing.https://www.mdpi.com/2504-3110/9/1/30fractional orderstatic compensator (STATCOM)unbalanced control |
| spellingShingle | Junhua Xu Guopeng He Songqin Tang Zheng Gong Chunwei Wang Yue Lan The Unbalanced Control Research of Fractional-Order Cascaded H-Bridge Multilevel STATCOM Fractal and Fractional fractional order static compensator (STATCOM) unbalanced control |
| title | The Unbalanced Control Research of Fractional-Order Cascaded H-Bridge Multilevel STATCOM |
| title_full | The Unbalanced Control Research of Fractional-Order Cascaded H-Bridge Multilevel STATCOM |
| title_fullStr | The Unbalanced Control Research of Fractional-Order Cascaded H-Bridge Multilevel STATCOM |
| title_full_unstemmed | The Unbalanced Control Research of Fractional-Order Cascaded H-Bridge Multilevel STATCOM |
| title_short | The Unbalanced Control Research of Fractional-Order Cascaded H-Bridge Multilevel STATCOM |
| title_sort | unbalanced control research of fractional order cascaded h bridge multilevel statcom |
| topic | fractional order static compensator (STATCOM) unbalanced control |
| url | https://www.mdpi.com/2504-3110/9/1/30 |
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