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A load profile based optimized piecewise droop control for DC microgrids

Sharma, S and Iyer, VM and Bhattacharya, S (2021) A load profile based optimized piecewise droop control for DC microgrids. In: 4th IEEE International Conference on DC Microgrids, ICDCM 2021, 18-21 Jul 2021, Arlington.

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Official URL: https://doi.org/10.1109/ICDCM50975.2021.9504628

Abstract

Droop control is a commonly used method to parallel converters in a DC microgrid. However, the presence of non-idealities such as cable resistances can degrade the current sharing accuracy among the paralleled converters with the droop control approach. In this paper, an optimized piecewise droop-based control scheme is proposed to improve the current sharing accuracy. In the proposed method, the droop characteristics are optimized using the load current distribution. The proposed optimized piecewise droop control method is compared with both the linear and nonlinear droop based approaches over a wide range of load conditions. It is shown that the proposed piecewise droop control can achieve improved current sharing in a desired operating region based on the load distribution. The proposed control approach is verified using extensive switching circuit simulations. Further, a hardware-based experimental setup is used to validate the effectiveness of the proposed optimized piecewise droop control strategy. © 2021 IEEE.

Item Type: Conference Paper
Publication: 2021 IEEE 4th International Conference on DC Microgrids, ICDCM 2021
Publisher: Institute of Electrical and Electronics Engineers Inc.
Additional Information: The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords: Circuit simulation, Control approach; Droop characteristics; Droop control method; Droop control strategies; Load distributions; Operating regions; Parallel converter; Paralleled converters, Microgrids
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 03 Dec 2021 08:28
Last Modified: 03 Dec 2021 08:28
URI: http://eprints.iisc.ac.in/id/eprint/70204

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