Cost-based droop scheme for DC microgrid

Ullah, I, Wang, P, Loh, P and Blaabjerg, F 2014, 'Cost-based droop scheme for DC microgrid', in Proceedings of the 6th IEEE Energy Conversion Congress and Exposition (ECCE 2014), Pittsburgh, Pennsylvania, United States, 14-18 September 2014, pp. 765-769.


Document type: Conference Paper
Collection: Conference Papers

Title Cost-based droop scheme for DC microgrid
Author(s) Ullah, I
Wang, P
Loh, P
Blaabjerg, F
Year 2014
Conference name ECCE 2014
Conference location Pittsburgh, Pennsylvania, United States
Conference dates 14-18 September 2014
Proceedings title Proceedings of the 6th IEEE Energy Conversion Congress and Exposition (ECCE 2014)
Publisher IEEE
Place of publication United States
Start page 765
End page 769
Total pages 5
Abstract DC microgrids are gaining interest due to higher efficiencies of DC distribution compared with AC. The benefits of DC systems have been widely researched for data centers, IT facilities and residential applications. The research focus, however, has been more on system architecture and optimal voltage level, less on optimized operation and control of generation sources. The latter theme is perused in this paper, where cost-based droop scheme is proposed for distributed generators (DGs) in DC microgrids. Unlike traditional proportional power sharing based droop scheme, the proposed scheme considers the generation costs of DGs and dynamically tunes their droop gradients to produce more power from less costly DGs and vice versa. The proposed scheme is fully autonomous, simple to implement in dispatchable and non-dispatchable sources coupled with storage, support islanded and grid-connected operation. Most importantly, the proposed scheme can reduce overall total generation cost in DC microgrids without centralized controller and communication links. The performance of the proposed scheme has been verified under different load conditions.
Subjects Renewable Power and Energy Systems Engineering (excl. Solar Cells)
Industrial Electronics
Electrical and Electronic Engineering not elsewhere classified
Keyword(s) Autonomous control
Cost-based droop control
DC Microgrids
DC-DC power converters
Decentralized optimization
Decentralized control
Distributed power generation
Economic operation
Power generation economics
Power system management
DOI - identifier 10.1109/ECCE.2014.6953473
Copyright notice © 2014 IEEE
ISBN 9781479957774
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