A Dual-Window DC Bus Interacting Method for DC Microgrids Hierarchical Control Scheme

Abstract

Hierarchical control schemes have been commonly employed in dc microgrid controls, which combine local control, dc bus voltage coordination, and communication links to guarantee smart operation of dc microgrids. Conventional dc bus voltage regulation cannot conduct signal exchange. Therefore, external communication links are usually needed for hierarchical control schemes. However, once the communication link fails, the hierarchical control system will lose its ability to coordinate the distributed power smartly. This paper proposed a dual-window dc bus interacting (DBI) method to exchange information between the distributed energy sources, for the situations where communication link fails or is not available. A small-scale dc microgrid experimental system was set up, and a simple master-slave control scheme was implemented without communication link to demonstrate the feasibility of the proposed DBI method for dc microgrid controls. The expandability and immunity of the proposed DBI method were also evaluated.

Publication DOI: https://doi.org/10.1109/TSTE.2019.2900617
Divisions: College of Engineering & Physical Sciences > School of Informatics and Digital Engineering > Electrical and Electronic Engineering
Additional Information: © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. Funding: This work has received support from the U.K. EPSRC-UKRI Innovation Fellowship scheme under grant No. EP/S001662/1, and the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 734796.
Uncontrolled Keywords: DC bus interacting,DC microgrids,decentralized control,droop control,Renewable Energy, Sustainability and the Environment
Publication ISSN: 1949-3029
Full Text Link:
Related URLs: https://ieeexpl ... cument/8645723/ (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2020-04-01
Published Online Date: 2019-02-20
Accepted Date: 2019-02-01
Authors: Li, Fulong
Lin, Zhengyu (ORCID Profile 0000-0001-7733-2431)
Qian, Zhongnan
Wu, Jiande
Jiang, Wei

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