Abstract

The unbalance of the state-of-charges (SOCs) may be among paralleled energy storage systems (ESSs) is harmful for the system operation. This paper proposes an adaptive control strategy to achieve the balance of SOCs among the paralleled ESS-based virtual synchronous generators (VSGs) in a completely decentralized way. The parameters of the virtual governor are designed to change according to the local SOC taking the stability and steady-state frequency limitation into consideration. To realize the adaptive control, this paper starts with an analysis of the generalized requirements of the adaptive terms. Then linear relationships are chosen as an example to construct the adaptive controller. The IEEE 9-Bus system is used to verify that, with the proposed method, the SOC balancing can be gradually realized no matter the differences in the initial values and disturbances without the communication network.

Original languageEnglish
Title of host publicationIECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society
Number of pages6
Publication date2021
Pages1-6
ISBN (Print)978-1-6654-0256-9
ISBN (Electronic)978-1-6654-3554-3
DOIs
Publication statusPublished - 2021
EventIECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society - Toronto, ON, Canada
Duration: 13 Oct 202116 Oct 2021

Conference

ConferenceIECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society
LocationToronto, ON, Canada
Period13/10/202116/10/2021
SeriesProceedings of the Annual Conference of the IEEE Industrial Electronics Society
ISSN1553-572X

Keywords

  • adaptive control
  • droop control
  • energy storage system
  • state-of-charge
  • virtual synchronous generator

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