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Power Distribution Strategy Based on Low-Pass Filter Controller with a Variable Time Constant in Hybrid Energy Storage Systems
KTH, School of Electrical Engineering and Computer Science (EECS), Electrical Engineering, Electromagnetic Engineering.ORCID iD: 0000-0002-0206-6631
KTH, School of Electrical Engineering and Computer Science (EECS), Electrical Engineering, Electromagnetic Engineering.ORCID iD: 0000-0003-4740-1832
2021 (English)In: 2021 IEEE PES INNOVATIVE SMART GRID TECHNOLOGY EUROPE (ISGT EUROPE 2021), Institute of Electrical and Electronics Engineers (IEEE) , 2021, p. 785-789Conference paper, Published paper (Refereed)
Abstract [en]

A critical issue in a hybrid energy storage system (HESS) is the control strategy, especially the power distribution between the individual energy storage devices. In this paper, the power distribution strategy based on the low-pass filter (LPF) controller with a variable time constant is introduced. The adjustable range of the variable time constant is determined by the spectrum analysis of the imbalanced power in a stand-alone household-prosumer system. In addition, the variation of the time constant is based on the feedback of the state of charge (SoC) of the supercapacitor (SC). The simulation results show that the power distribution strategy keeps the SoC of the SC in a moderate range and utilizes the SC more properly. A scaled-down experimental setup is built to verify the effectiveness of the power distribution strategy and the simulation results. Therefore, the proposed power distribution strategy ensures the effective operation of the HESS, avoids the unnecessary enlarging of the SC, and achieves cost reduction.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE) , 2021. p. 785-789
Series
IEEE PES Innovative Smart Grid Technologies Conference Europe, ISSN 2165-4816
Keywords [en]
Household-prosumer, hybrid energy storage system (HESS), variable time constant, state of charge (SoC)
National Category
Energy Engineering Other Electrical Engineering, Electronic Engineering, Information Engineering Energy Systems
Identifiers
URN: urn:nbn:se:kth:diva-310530DOI: 10.1109/ISGTEUROPE52324.2021.9639950ISI: 000765815000146Scopus ID: 2-s2.0-85123919334OAI: oai:DiVA.org:kth-310530DiVA, id: diva2:1649812
Conference
11th IEEE-PES Innovative Smart Grid Technologies Europe (IEEE-PES ISGT Europe), OCT 18-21, 2021, ELECTR NETWORK
Note

Part of proceedings: ISBN 978-1-6654-4875-8, QC 20230117

Available from: 2022-04-05 Created: 2022-04-05 Last updated: 2023-01-17Bibliographically approved

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Jiao, YangMånsson, Daniel

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