期刊
IEEE TRANSACTIONS ON SUSTAINABLE ENERGY
卷 11, 期 2, 页码 652-661出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TSTE.2019.2900617
关键词
Microgrids; Voltage control; Batteries; Satellite broadcasting; Information exchange; Wind turbines; DC microgrids; DC bus interacting; droop control; decentralized control
资金
- U.K. EPSRC-UKRI Innovation Fellowship [EP/S001662/1]
- European Union's Horizon 2020 Research and Innovation Programme [734796]
- EPSRC [EP/S001662/1, EP/S001662/2] Funding Source: UKRI
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.
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