Distributed Coordination Control Based on State-of-Charge for Bidirectional Power Converters in a Hybrid AC/DC Microgrid

Zeyan Lv, Yanghong Xia, Junwei Chai, Miao Yu and Wei Wei
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Zeyan Lv: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Yanghong Xia: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Junwei Chai: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Miao Yu: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Wei Wei: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China

Energies, 2018, vol. 11, issue 4, 1-15

Abstract: This paper proposes a distributed coordination control for multiple bidirectional power converters (BPCs) in a hybrid AC/DC microgrid with consideration of state-of-charge (SOC) of storages. The researched hybrid AC/DC microgrid is composed of both AC and DC subgrids connected by multiple parallel BPCs. In the literature, the storages of a hybrid microgrid are considered to allocate in only the AC subgrid or DC subgrid, which reduces the reliability of the whole system, especially during the islanded mode. Besides, the SOC management has not been considered in BPCs’ operating strategy. This paper considers a hybrid microgrid topology which has energy storages in both AC side and DC side. This ensures the reliability while increasing the complexity of the control strategy at the same time. Further, a distributed coordination control method for multiple BPCs based on SOC was proposed to enhance the reliability of hybrid microgrid. Finally, the performance of the proposed control methods was verified by real-time hardware-in-loop (HIL) tests.

Keywords: hybrid AC/DC microgrid; parallel bidirectional power converters (BPCs); distributed control; power sharing; SOC management (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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