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 language | English |
|---|---|
| Title of host publication | ICIEA 2022 - Proceedings of the 17th IEEE Conference on Industrial Electronics and Applications |
| Editors | Wenxiang Xie, Shibin Gao, Xiaoqiong He, Xing Zhu, Jingjing Huang, Weirong Chen, Lei Ma, Haiyan Shu, Wenping Cao, Lijun Jiang, Zeliang Shu |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 828-833 |
| Number of pages | 6 |
| ISBN (Electronic) | 9781665409841 |
| DOIs | |
| State | Published - 2022 |
| Event | 17th IEEE Conference on Industrial Electronics and Applications, ICIEA 2022 - Chengdu, China Duration: 16 Dec 2022 → 19 Dec 2022 |
Publication series
| Name | ICIEA 2022 - Proceedings of the 17th IEEE Conference on Industrial Electronics and Applications |
|---|
Conference
| Conference | 17th IEEE Conference on Industrial Electronics and Applications, ICIEA 2022 |
|---|---|
| Country/Territory | China |
| City | Chengdu |
| Period | 16/12/22 → 19/12/22 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- DC microgrid
- SoC balancing
- droop control
- event-triggered mechanism
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