A Robust Cooperative Distributed Secondary Control Strategy for DC Microgrids With Fewer Communication Requirements

This article proposes a robust cooperative distributed secondary control strategy for dc microgrids, with the main focus on reducing communication burdens. To this end, we adopt a sparsity-promoting consensus-based distributed secondary control framework for converter-interfaced dc microgrids consis...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2023-01, Vol.38 (1), p.271-282
Main Authors: Sadabadi, Mahdieh S., Mijatovic, Nenad, Dragicevic, Tomislav
Format: Article
Language:English
Subjects:
Cooperative control
DC microgrids
DC-DC power converters
Decentralized control
distributed control
Distributed generation
distributed generation (DG)
Exchanging
Matrix converters
Microgrids
Reliability
Robust control
secondary control
Stability
stability analysis
Symmetric matrices
Voltage control
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Summary:This article proposes a robust cooperative distributed secondary control strategy for dc microgrids, with the main focus on reducing communication burdens. To this end, we adopt a sparsity-promoting consensus-based distributed secondary control framework for converter-interfaced dc microgrids consisting of multiple distributed generation (DG) units. The proposed control strategy relies on less (sparse) information exchange over a communication network and does not require exchanging voltage signals or their estimated values amongst neighboring DG units. Rigorous Lyapunov-based stability certificates for dc microgrids are derived. The stability conditions can be verified without the knowledge of distribution lines connecting different DG units. The effectiveness of the proposed secondary control approach is verified by experimental results and a comparative simulation case study on a multiple-DG dc microgrid.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2022.3202655