Enhancing Process State Monitoring in Energy Storage Systems: A Robust Design Synthesis with Physics-informed Generalized Observer
Document Type
Article
Publication Date
5-15-2024
Publication Title
Journal of Energy Storage
Abstract
Energy storage systems (ESSs) are crucial for managing renewable energy fluctuations. Knowing ESSs' states is vital for thermal management. This paper presents a robust design synthesis approach, leveraging a physicsinformed generalized observer (GO), for enhancing the process state monitoring in ESSs. The proposed GO takes advantage of the inherent characteristics of ESSs as interconnected subsystems with distinct physical significance. By utilizing measured inputs and outputs, the GO accurately estimates the unmeasurable and unknown process states. GO employs a physics -informed model and a tracking feedback correction mechanism for accurate state estimation. It offers high accuracy, robustness, and insensitivity to measurement noise. To validate the effectiveness of the proposed approach, two case studies are conducted on ESSs. The first involves monitoring the core temperature of lithium batteries, and the second involves an experimental study on monitoring the inner chamber temperature of heat buffer tanks. Experimental results demonstrate approximately 10% improvement compared to conventional methods. GO provides a simple design method, clear physical interpretation, and strong interpretability. Overall, GO is an effective and versatile observer for process monitoring with significant advantages and potential for various applications.
Repository Citation
Liu, Shaojie; Gao, Zhiqiang; Chen, YangQuan; Wang, Yongdong; Li, Donghai; and Zhu, Min, "Enhancing Process State Monitoring in Energy Storage Systems: A Robust Design Synthesis with Physics-informed Generalized Observer" (2024). Electrical and Computer Engineering Faculty Publications. 526.
https://engagedscholarship.csuohio.edu/enece_facpub/526
DOI
10.1016/j.est.2024.111391
Volume
87
