Dynamic performance and control scheme of variable-speed compressed air energy storage

Jingjian Huang, Yujie Xu, Huan Guo, Xiaoqian Geng and Haisheng Chen

Applied Energy, 2022, vol. 325, issue C, No S0306261922006869

Abstract: To satisfy the requirements of large-scale utilization of renewable energy, the compressed air energy storage systems should exhibit a wide operating range. However, the flexibility of compressed air energy storage systems is limited by the turbomachinery character. Given that variable-speed operation can significantly broaden the flexibility of turbomachinery, a double-fed-induction-machine-based variable-speed compressed air energy storage (VS-CAES) system was proposed and studied for the first time. A numerical model integrating thermal-mechanical-electrical subsystems of VS-CAES was built. The control scheme of the VS-CAES system for max efficiency point tracking was well built and studied. The steady thermodynamic performance and dynamic performance of the VS-CAES system were analyzed and compared with those of the fixed-speed compressed air energy storage (FS-CAES) system. The results show that the variable-speed operation broadens the operation range of the charging process by 49 % under different pressure, while the influence on the operation range of discharging process is negligible. The off-design exergy efficiency increases by 0–6 % with an average of 1.8 % in the charging process and 0–1 % with an average of 0.5 % in discharging process. Under a 10 % step change of power setpoint command, the dynamic power response of VS-CAES is 0.3 s for both charging mode and discharging mode. In a contrast, the dynamic power response of FS-CAES is 26.5 s and 20.5 s. The research results of this study provide important guidance for the design and operation of compressed air energy storage system.

Keywords: Compressed air energy storage; Variable speed; Doubly fed induction machine; Control scheme; Performance analysis (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0306261922006869
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:325:y:2022:i:c:s0306261922006869

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/bibliographic
http://www.elsevier. ... 405891/bibliographic

DOI: 10.1016/j.apenergy.2022.119338

Access Statistics for this article

Applied Energy is currently edited by J. Yan

More articles in Applied Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().