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Title: An autonomous control scheme of global smooth transitions for bidirectional DC-DC converter in DC microgrid
Authors: Li, Xiangke
Jiang, Wentao
Wang, Junjun
Wang, Peng
Wu, Xiaohua
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2021
Source: Li, X., Jiang, W., Wang, J., Wang, P. & Wu, X. (2021). An autonomous control scheme of global smooth transitions for bidirectional DC-DC converter in DC microgrid. IEEE Transactions On Energy Conversion, 36(2), 950-960.
Journal: IEEE Transactions on Energy Conversion 
Abstract: In dc microgrid, energy storage system (ESS) plays a crucial role to provide short-or-long term and high-quality electric energy. The different control strategies for bidirectional dc-dc converter (BDC) of ESS in grid-tied and islanded modes pose challenges to the coordination control of the dc microgrid. This paper proposes an autonomous control scheme for the BDC in dc microgrid. The proposed control scheme is based on V2-P droop control and unifies bus voltage regulation and power regulation in a single control structure. Thus, global smooth transition between various operation modes can be achieved without any control strategy changes, which avoids various mode switch detection mechanisms and improves system stability. Furthermore, the proposed control scheme is fully decentralized which reduces the reliance on communication, and enhances the reliability of the microgrid. On the other hand, V2-P droop approach eliminates the negative effect of widespread constant power loads (CPLs) in dc microgrid. The stability of the proposed control method is illustrated, and the design guideline of some critical control gains is addressed. Finally, the effectiveness of the proposed control scheme is validated by the real-time hardware-in-loop (HIL) platform.
ISSN: 0885-8969
DOI: 10.1109/TEC.2020.3020127
Schools: School of Electrical and Electronic Engineering 
Research Centres: Energy Research Institute @ NTU (ERI@N) 
Rights: © 2020 IEEE. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:EEE Journal Articles
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