Power Regulation Strategy of Grid-Forming Bidirectional Interlinking Converters in Hybrid AC-DC Microgrid With Energy Storage Management
This study proposes a power regulation strategy for a bidirectional interlinking converter (BIC) in a hybrid AC/DC microgrid. The proposed control strategy utilizes grid forming virtual synchronous generator (VSG) control of BIC to achieve global power sharing (GPS) between two sub-grids, AC and DC...
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| Format: | Article |
| Language: | English |
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IEEE
2025-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/10896672/ |
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| author | Yi-Hung Liao Wei-Rong Lai Meng-Hsuan Yu Ting-Hsien Lin |
| author_facet | Yi-Hung Liao Wei-Rong Lai Meng-Hsuan Yu Ting-Hsien Lin |
| author_sort | Yi-Hung Liao |
| collection | DOAJ |
| description | This study proposes a power regulation strategy for a bidirectional interlinking converter (BIC) in a hybrid AC/DC microgrid. The proposed control strategy utilizes grid forming virtual synchronous generator (VSG) control of BIC to achieve global power sharing (GPS) between two sub-grids, AC and DC sub-grids, in islanded mode. Both grid-connected mode and islanded mode are incorporated in the system. This approach allows BIC to operate under a voltage source fault in the AC subgrid. The control strategy includes both communication-based and communication-less approaches to handle communication equipment failures. In the DC-side, a droop shift control strategy is proposed, taking into account the energy storage system (ESS) and its management with the virtual output power method. Simultaneously, the droop shift control can increase the load response in the DC side of BIC. During periods of low load demand, the ESS can be charged, and the overall power sharing on the AC and DC sides can be achieved. In addition, this study combines virtual impedance and frequency restoration control of BIC to enhance active and reactive power sharing. Furthermore, the system stability is analyzed. Finally, the feasibility of the proposed method is verified through simulations and prototype experimental results. |
| format | Article |
| id | doaj-art-2f12e853c0b84d4182379541cf460f10 |
| institution | OA Journals |
| issn | 2169-3536 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj-art-2f12e853c0b84d4182379541cf460f102025-08-20T02:11:09ZengIEEEIEEE Access2169-35362025-01-0113354013541610.1109/ACCESS.2025.354388810896672Power Regulation Strategy of Grid-Forming Bidirectional Interlinking Converters in Hybrid AC-DC Microgrid With Energy Storage ManagementYi-Hung Liao0https://orcid.org/0000-0003-4575-8563Wei-Rong Lai1Meng-Hsuan Yu2Ting-Hsien Lin3Department of Electrical Engineering, National Central University, Zhongli, Taoyuan City, TaiwanDepartment of Electrical Engineering, National Central University, Zhongli, Taoyuan City, TaiwanDepartment of Electrical Engineering, National Central University, Zhongli, Taoyuan City, TaiwanDepartment of Electrical Engineering, National Central University, Zhongli, Taoyuan City, TaiwanThis study proposes a power regulation strategy for a bidirectional interlinking converter (BIC) in a hybrid AC/DC microgrid. The proposed control strategy utilizes grid forming virtual synchronous generator (VSG) control of BIC to achieve global power sharing (GPS) between two sub-grids, AC and DC sub-grids, in islanded mode. Both grid-connected mode and islanded mode are incorporated in the system. This approach allows BIC to operate under a voltage source fault in the AC subgrid. The control strategy includes both communication-based and communication-less approaches to handle communication equipment failures. In the DC-side, a droop shift control strategy is proposed, taking into account the energy storage system (ESS) and its management with the virtual output power method. Simultaneously, the droop shift control can increase the load response in the DC side of BIC. During periods of low load demand, the ESS can be charged, and the overall power sharing on the AC and DC sides can be achieved. In addition, this study combines virtual impedance and frequency restoration control of BIC to enhance active and reactive power sharing. Furthermore, the system stability is analyzed. Finally, the feasibility of the proposed method is verified through simulations and prototype experimental results.https://ieeexplore.ieee.org/document/10896672/Bidirectional interlinking converter (BIC)droop shift control (DSC)energy storage system (EES)global power sharing (GPS)hybrid microgridsvirtual synchronous generator (VSG) |
| spellingShingle | Yi-Hung Liao Wei-Rong Lai Meng-Hsuan Yu Ting-Hsien Lin Power Regulation Strategy of Grid-Forming Bidirectional Interlinking Converters in Hybrid AC-DC Microgrid With Energy Storage Management IEEE Access Bidirectional interlinking converter (BIC) droop shift control (DSC) energy storage system (EES) global power sharing (GPS) hybrid microgrids virtual synchronous generator (VSG) |
| title | Power Regulation Strategy of Grid-Forming Bidirectional Interlinking Converters in Hybrid AC-DC Microgrid With Energy Storage Management |
| title_full | Power Regulation Strategy of Grid-Forming Bidirectional Interlinking Converters in Hybrid AC-DC Microgrid With Energy Storage Management |
| title_fullStr | Power Regulation Strategy of Grid-Forming Bidirectional Interlinking Converters in Hybrid AC-DC Microgrid With Energy Storage Management |
| title_full_unstemmed | Power Regulation Strategy of Grid-Forming Bidirectional Interlinking Converters in Hybrid AC-DC Microgrid With Energy Storage Management |
| title_short | Power Regulation Strategy of Grid-Forming Bidirectional Interlinking Converters in Hybrid AC-DC Microgrid With Energy Storage Management |
| title_sort | power regulation strategy of grid forming bidirectional interlinking converters in hybrid ac dc microgrid with energy storage management |
| topic | Bidirectional interlinking converter (BIC) droop shift control (DSC) energy storage system (EES) global power sharing (GPS) hybrid microgrids virtual synchronous generator (VSG) |
| url | https://ieeexplore.ieee.org/document/10896672/ |
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