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Model validation of a high-speed flywheel energy storage system using power hardware-in-the-loop testing

Karrari, Shahab 1; De Carne, Giovanni ORCID iD icon 1; Noe, Mathias 1
1 Institut für Technische Physik (ITEP), Karlsruher Institut für Technologie (KIT)


Low-inertia power systems with a high share of renewables can suffer from fast frequency deviations during disturbances. Fast-reacting energy storage systems such as a Flywheel Energy Storage System~(FESS) can help limit the frequency deviations by injecting or absorbing high amounts of active power, with almost no degradation concerns. But for an accurate evaluation of the benefits of using a FESS in power systems, an accurate and validated model is necessary, which not only reflects its advantages, but also shows the practical limitations of this technology, such as its losses, its auxiliary power requirements, and its limitations during the whole operational range. In this paper, an accurate model for a high-speed FESS is presented, and then experimentally validated by means of Power Hardware-in-the-Loop~(PHIL) testing of a full-scale commercial high-speed FESS in several frequency deviation scenarios. The PHIL testing setup allows testing the FESS during extreme and realistic frequency deviation, including the major frequency disturbance of August 9, 2019, in the power system of the UK. In each scenario, the same inputs that are sent to the real FESS are also given to the FESS model, running in real time, for model validation, and an excellent match between the results of the real FESS and its model is observed. ... mehr

DOI: 10.1016/j.est.2021.103177
Web of Science
Zitationen: 5
Zitationen: 8
Zugehörige Institution(en) am KIT Institut für Technische Physik (ITEP)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 11.2021
Sprache Englisch
Identifikator ISSN: 2352-152X
KITopen-ID: 1000137924
HGF-Programm 37.12.03 (POF IV, LK 01) Smart Areas and Research Platforms
Erschienen in Journal of energy storage
Verlag Elsevier
Band 43
Seiten Art.-Nr.: 103177
Vorab online veröffentlicht am 21.09.2021
Schlagwörter Model validation, Flywheel energy storage system, Frequency control, Power hardware-in-the-loop testing
Nachgewiesen in Dimensions
Web of Science
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