A novel solid state transformer based control topology for interconnected MV and LV hybrid microgrids
Hybrid microgrid continues to be an attraction for researchers as it brings the advantages of both ac and dc systems under one roof. The interlinking converter (ILC) of this system regulates the ac frequency and dc voltage while maintaining bidirectional power. This paper proposes a novel solid-stat...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-11-01
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| Series: | Energy Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352484722016183 |
| _version_ | 1797901960962113536 |
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| author | Sarmad Majeed Malik Yingyun Sun Junjie Hu |
| author_facet | Sarmad Majeed Malik Yingyun Sun Junjie Hu |
| author_sort | Sarmad Majeed Malik |
| collection | DOAJ |
| description | Hybrid microgrid continues to be an attraction for researchers as it brings the advantages of both ac and dc systems under one roof. The interlinking converter (ILC) of this system regulates the ac frequency and dc voltage while maintaining bidirectional power. This paper proposes a novel solid-state transformer (SST) based topology for interconnected medium voltage (MV) and low voltage (LV) hybrid microgrids. Based on the topology, various control modes are identified and correspondingly, an autonomous power sharing scheme is presented with dc voltage and ac frequency regulation. A linear voltage-frequency control is discussed for ac/dc and dc/ac converters of SST which provides a secondary control mechanism. The dual active bridge (DAB) of the SST operates at voltage control mode while providing electrical isolation and stable system operation. The proposed topology and control scheme is significant in the sense that it allows integration of ac and dc grids with different voltage and frequency levels. In addition, the secondary dc voltage or ac frequency regulation control at any hybrid microgrid automatically regulates the ac frequency and dc voltage in the system which reduces system cost. Various simulated scenarios in PSCAD with load changes highlight the optimal performance of the proposed scheme. |
| first_indexed | 2024-04-10T09:10:15Z |
| format | Article |
| id | doaj.art-bbb988c5deec4a7ebf202a76d9a6c4db |
| institution | Directory Open Access Journal |
| issn | 2352-4847 |
| language | English |
| last_indexed | 2024-04-10T09:10:15Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Reports |
| spelling | doaj.art-bbb988c5deec4a7ebf202a76d9a6c4db2023-02-21T05:12:48ZengElsevierEnergy Reports2352-48472022-11-0181038510394A novel solid state transformer based control topology for interconnected MV and LV hybrid microgridsSarmad Majeed Malik0Yingyun Sun1Junjie Hu2Department of Electrical Engineering, National University of Sciences and Technology (NUST), Islamabad, 46000, Pakistan; Corresponding author.Department of Electrical Engineering, North China Electric Power University, Beijing, 102206, ChinaDepartment of Electrical Engineering, North China Electric Power University, Beijing, 102206, ChinaHybrid microgrid continues to be an attraction for researchers as it brings the advantages of both ac and dc systems under one roof. The interlinking converter (ILC) of this system regulates the ac frequency and dc voltage while maintaining bidirectional power. This paper proposes a novel solid-state transformer (SST) based topology for interconnected medium voltage (MV) and low voltage (LV) hybrid microgrids. Based on the topology, various control modes are identified and correspondingly, an autonomous power sharing scheme is presented with dc voltage and ac frequency regulation. A linear voltage-frequency control is discussed for ac/dc and dc/ac converters of SST which provides a secondary control mechanism. The dual active bridge (DAB) of the SST operates at voltage control mode while providing electrical isolation and stable system operation. The proposed topology and control scheme is significant in the sense that it allows integration of ac and dc grids with different voltage and frequency levels. In addition, the secondary dc voltage or ac frequency regulation control at any hybrid microgrid automatically regulates the ac frequency and dc voltage in the system which reduces system cost. Various simulated scenarios in PSCAD with load changes highlight the optimal performance of the proposed scheme.http://www.sciencedirect.com/science/article/pii/S2352484722016183Interlinking converter (ILC)Solid state transformer (SST)Dual active bridge (DAB)State space modelHybrid microgrid |
| spellingShingle | Sarmad Majeed Malik Yingyun Sun Junjie Hu A novel solid state transformer based control topology for interconnected MV and LV hybrid microgrids Energy Reports Interlinking converter (ILC) Solid state transformer (SST) Dual active bridge (DAB) State space model Hybrid microgrid |
| title | A novel solid state transformer based control topology for interconnected MV and LV hybrid microgrids |
| title_full | A novel solid state transformer based control topology for interconnected MV and LV hybrid microgrids |
| title_fullStr | A novel solid state transformer based control topology for interconnected MV and LV hybrid microgrids |
| title_full_unstemmed | A novel solid state transformer based control topology for interconnected MV and LV hybrid microgrids |
| title_short | A novel solid state transformer based control topology for interconnected MV and LV hybrid microgrids |
| title_sort | novel solid state transformer based control topology for interconnected mv and lv hybrid microgrids |
| topic | Interlinking converter (ILC) Solid state transformer (SST) Dual active bridge (DAB) State space model Hybrid microgrid |
| url | http://www.sciencedirect.com/science/article/pii/S2352484722016183 |
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