ON THE EFFICIENCY OF ENERGY STORAGE SYSTEMS – THE INFLUENCE OF THE EXCHANGED POWER AND THE PENALTY OF THE AUXILIARIES

Alfred Rufer

DOI Number
https://doi.org/10.2298/FUEE2102173R
First page
173
Last page
185

Abstract


Storage is an important domain of the energy sector, with its traditional, classical solutions for smaller and larger amounts of energy. Energy storage has become of higher importance in relation with the development of alternative energy sources, leading to the development of new technologies. The energy efficiency of the storage means is an important parameter, being often not considered in the conception and design of the applications. For the evaluation of the energetic performance of a storage device, a well-adapted tool has been proposed, namely “The Theory of Ragone Plots”. This tool sets in evidence in what way the effectively recoverable energy amount of a device is depending on the power level of the charge/discharge process. Further, the taking into account of the power needed for the auxiliary equipment of a storage system like the circulation pumps of a flow battery, the vacuum pumps of a flywheel or the forced cooling of a battery can lead to a globally negative value of the efficiency.


Keywords

Energy Storage, Efficiency

Full Text:

PDF

References


A. Rufer, Energy Storage – Systems and Components, CRC Press, Taylor & Francis Group, November 2017.

K. O. Papailiou (Ed.), Springer Handbook of Power Systems, A. Rufer, Chapter 16, Energy Storage, Springer Science and Business Media LLC, 2021.

Hublot MP-05 “La Ferrari”: 50-day power reserve: A World Record power reserve for a hand-wound Tourbillon wristwatch. https://www.gphg.org/horlogerie/en/watches/mp-05-laferrari-50-days-power-reserve

www.solarimpulse.com

www.nant-de-drance.ch

StoraXe, Industrial and infrastructure scalable large-scale storage solutions, ADS-TEC, GmbH, D-72622 Nürtingen, www.ads-tec.de

S. C. Lee, W. Y. Jung, "Analogical understanding of the Ragone plot and a new categorization of energy devices", Energy Procedia, vol. 88, pp. 526-530, June 2016.

S. K. Moore, "Gravity Energy Storage Will Show Its Potential in 2021, Gravitricity and Energy Vault are pioneering a radical new alternative to batteries for grid storage", IEEE Spectrum, January 2021.

A. Rufer, "Design and Control of a KE (Kinetic Energy) - Compensated Gravitational Energy Storage System", In Proceedings of the 2020 22nd European Conference on Power Electronics and Applications (EPE'20 ECCE Europe), 2020, pp. 1-11.

H. Höimoja, M. Vasiladiotis, S. Grioni, M. Capezzali, A. Rufer, H. B. Püttgen, "Toward Ultrafast Charging Solutions of Electric Vehicles", In Proceedings of the CIGRE 2012, Paris, pp. 1-8.

T. Christen, M. W. Carlen, "Theory of Ragone plots", J. Power Sources, vol. 91, no. 2, pp. 210-216, December 2000.

S. Delalay, "Etude systémique pour l’alimentation hybride – application aux systèmes intermittents", PhD Thesis Nr 5768, EPFL, Lausanne, Switzerland, 2013.


Refbacks

  • There are currently no refbacks.


ISSN: 0353-3670 (Print)

ISSN: 2217-5997 (Online)

COBISS.SR-ID 12826626