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Reconstructed droop control for peer current sharing of battery storage in DC microgrids

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conference contribution
posted on 26.08.2021, 08:58 by Fulong LiFulong Li, Haoge XuHaoge Xu, Zhengyu LinZhengyu Lin
Droop control has been widely applied in DC microgrids for regulating the power sharing of battery storage. However, conventional droop control needs to select appreciate droop coefficients and large droop coefficients could have the potential to change the system quiescent operating point, thus causing instability. To solve such concern, this paper proposes a novel droop control realization with a natural droop coefficient. A reconstructed control block is used to achieve this purpose. The reconstructed control block also generates a controllable variable for integrating with hierarchical control scheme. Besides, this variable enhances the stability performance of converter due to variable load-adjusted bandwidth of controller. Numerical analysis is provided to visually inspect to the relationship between the bandwidth of controller and load power. A Matlab/simulink model is used to validate this novel reconstructed droop control.

Funding

Plug-and-play Low Voltage DC Microgrid for Cheap and Clean Energy

Engineering and Physical Sciences Research Council

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European Union’s Horizon 2020 research and innovation programme grant agreement No.734796

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

2021 IEEE Fourth International Conference on DC Microgrids (ICDCM)

Source

2021 IEEE Fourth International Conference on DC Microgrids (ICDCM)

Publisher

IEEE

Version

AM (Accepted Manuscript)

Rights holder

© IEEE

Publisher statement

© 2021 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.

Publication date

2021-08-06

Copyright date

2021

ISBN

9781728186412

Language

en

Location

Arlington, VA, USA

Event dates

18th July 2021 - 21st July 2021

Depositor

Dr Zhengyu Lin. Deposit date: 25 August 2021