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

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