SoC Balancing Strategy for Distributed Energy Storage System Based on Event-Triggered Mechanism in DC Microgrids

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

Distributed energy storage systems (DESSs) are often used to improve energy efficiency in DC microgrids. However, the life of DESSs will be degraded when energy storage units (ESUs) charged with unbalanced state-of-charge (SoC). Besides, the periodical updating mechanism for control parameters could bring a communication burden among converters, especially when DESSs reach balance. To solve the above issues, a SoC balancing control strategy of DESS based on event-triggered mechanism is proposed in this paper. Firstly, a SoC-based droop control method is designed to adjust the discharge current of each ESU in order to achieve the SoC balance. Secondly, a event-triggered control (ETC) is proposed to achieve the same discharge rate of SoC when DESSs reach balance. Meanwhile, the unnecessary communication times of the DESSs are reduced through event-triggered mechanism. Finally, the effectiveness of the proposed strategy is verified by Matlab/environment. The simulation results show that the proposed control strategy could realize the SoC balance and the communication burden could be significantly reduced in contrast to the time-triggered control (TTC).

Original languageEnglish
Title of host publicationICIEA 2022 - Proceedings of the 17th IEEE Conference on Industrial Electronics and Applications
EditorsWenxiang Xie, Shibin Gao, Xiaoqiong He, Xing Zhu, Jingjing Huang, Weirong Chen, Lei Ma, Haiyan Shu, Wenping Cao, Lijun Jiang, Zeliang Shu
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages828-833
Number of pages6
ISBN (Electronic)9781665409841
DOIs
StatePublished - 2022
Event17th IEEE Conference on Industrial Electronics and Applications, ICIEA 2022 - Chengdu, China
Duration: 16 Dec 202219 Dec 2022

Publication series

NameICIEA 2022 - Proceedings of the 17th IEEE Conference on Industrial Electronics and Applications

Conference

Conference17th IEEE Conference on Industrial Electronics and Applications, ICIEA 2022
Country/TerritoryChina
CityChengdu
Period16/12/2219/12/22

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • DC microgrid
  • SoC balancing
  • droop control
  • event-triggered mechanism

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