A Comparison of Time-Domain Implementation Methods for Fractional-Order Battery Impedance Models

Brian Ospina Agudelo, Walter Zamboni and Eric Monmasson
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Brian Ospina Agudelo: Dipartimento di Ingegneria dell’Informazione ed Elettrica e Matematica Applicata DIEM, Università degli Studi di Salerno, 84084 Fisciano, Italy
Walter Zamboni: Dipartimento di Ingegneria dell’Informazione ed Elettrica e Matematica Applicata DIEM, Università degli Studi di Salerno, 84084 Fisciano, Italy
Eric Monmasson: Laboratoire SATIE, CY Cergy Paris Université, 95000 Neuville-sur-Oise, France

Energies, 2021, vol. 14, issue 15, 1-23

Abstract: This paper is a comparative study of the multiple RC, Oustaloup and Grünwald–Letnikov approaches for time domain implementations of fractional-order battery models. The comparisons are made in terms of accuracy, computational burden and suitability for the identification of impedance parameters from time-domain measurements. The study was performed in a simulation framework and focused on a set of ZARC elements, representing the middle frequency range of Li-ion batteries’ impedance. It was found that the multiple RC approach offers the best accuracy–complexity compromise, making it the most interesting approach for real-time battery simulation applications. As for applications requiring the identification of impedance parameters, the Oustaloup approach offers the best compromise between the goodness of the obtained frequency response and the accuracy–complexity requirements.

Keywords: battery impedance model; equivalent circuit model; fractional-order model; time- domain implementation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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