Droop control design to minimize losses in DC microgrid for more electric aircraft

Mohamed, Mohamed A.A.; Rashed, Mohamed; Lang, Xiaoyu; Atkin, Jason; Yeoh, Seang; Bozhko, Serhiy

Abstract

Droop control has been widely used as a load-sharing method between paralleled power sources in DC microgrid due to its modularity and reliability. Existing droop gains design methods rely on computationally intensive supervisory control algorithms and knowledge of sub-system parameters.This paper presents a streamlined design approach for optimal droop gains, relying only on the knowledge of the parameters of the local converter power losses model in order to achieve minimum power losses for a More Electric Aircraft (MEA) DC microgrid. Additionally, a simplified, but sufficiently accurate, converter losses model is proposed in this paper for optimal droop gains design. The proposed converter losses model consists of two parts; no-load losses, and losses which are represented by Equivalent Series Resistance (ESR). The proposed design approach analyses show that setting the optimal droop gains equal to the converter ESR will achieve minimum overall DC microgrid power losses without the need for any additional information on the DC transmission line parameters. The effectiveness of the optimal droop gains design method is tested in a simulation environment and evaluated experimentally using a laboratory DC microgrid test rig.

Citation

Mohamed, M. A., Rashed, M., Lang, X., Atkin, J., Yeoh, S., & Bozhko, S. (2021). Droop control design to minimize losses in DC microgrid for more electric aircraft. Electric Power Systems Research, 199, Article 107452. https://doi.org/10.1016/j.epsr.2021.107452

• Journal Article Type: Article
• Acceptance Date: Jul 4, 2021
• Online Publication Date: Jul 14, 2021
• Publication Date: Oct 1, 2021
• Deposit Date: Nov 28, 2024
• Journal: Electric Power Systems Research
• Print ISSN: 0378-7796
• Electronic ISSN: 1873-2046
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 199
• Article Number: 107452
• DOI: https://doi.org/10.1016/j.epsr.2021.107452
• Keywords: Electrical and Electronic Engineering; Energy Engineering and Power Technology
• Public URL: https://nottingham-repository.worktribe.com/output/5788903
• Publisher URL: https://www.sciencedirect.com/science/article/abs/pii/S0378779621004338?via%3Dihub
• Additional Information: This article is maintained by: Elsevier; Article Title: Droop control design to minimize losses in DC microgrid for more electric aircraft; Journal Title: Electric Power Systems Research; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.epsr.2021.107452; Content Type: article; Copyright: Crown Copyright © 2021 Published by Elsevier B.V. All rights reserved.