Advantages of Odd Random Phase Multisine Electrochemical Impedance Measurements

Ingelgem, Yves Van; Tourwe, Els; Blajiev, Orlin; Pintelon, Rik; Hubin, Annick

doi:10.1002/elan.200804471

Cited by 87 publications

(60 citation statements)

References 50 publications

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“…Just as we did with the measurements of the battery module impedance spectra shown in Figure 5, the spectra were measured both with the single sine measurement method and with the TDM measurement method. Again, R s was fixed in order to assure a stable conversion of the fitting routine using the expression in (6). The obtained impedance data is shown in Figure 6.…”

Section: Resultsmentioning

confidence: 99%

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Measurements of Electric Performance and Impedance of a 75 Ah NMC Lithium Battery Module

Jensen

Engelbrecht

Bernuy-López

2012

J. Electrochem. Soc.

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Detailed characterization of battery modules is necessary to construct reliable models that incorporate performance related aspects of the modules such as thermodynamics, electrochemical reaction kinetics and degradation mechanisms. Charge-discharge curves, temperature and battery impedance measurements can provide information about these aspects. Charge-discharge curves can be used to measure the battery open circuit voltage and the internal resistance. Temperature measurements provide information about the thermodynamic reactions and impedance spectra yield detailed information about the reaction kinetics. In this paper we present the measurement methods used to examine the internal resistance, the capacity and the impedance of a 75 Ah NMC battery module. In order to measure the impedance of the battery module and of the individual cells in the module, we combine the single sine technique and the Laplace transformed excitation signal technique which each have pros and cons. By combining the two impedance measurement techniques we are able to reduce the measurement time by a factor of 20 relative to ordinary single-sine measurements. Further we use the impedance measurements to calculate the overvoltage as a function of state of charge and the difference between charging overvoltage and discharging overvoltage and compare it with measurements.

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Section: Resultsmentioning

confidence: 99%

“…6 Further, real-parallel impedance solutions like the 'PAD4' by Zahner can measure impedance on several cells simultaneously. Unfortunately, the equipment for both multisine and real-parallel techniques is generally more expensive than the equipment used for the presented measurement technique.…”

mentioning

confidence: 99%

Measurements of Electric Performance and Impedance of a 75 Ah NMC Lithium Battery Module

Jensen

Engelbrecht

Bernuy-López

2012

J. Electrochem. Soc.

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show abstract

“…Another natural task for future is to use this technique for analysing nonlinear distortions in more complex and larger biomolecular systems. The application and design of the random-phase multisine signals has already been proven in many of the real life biological and electrochemical case studies experimentally (Van Ingelgem et al, 2009;Sanchez and Bragos, 2009;Olarte et al, 2014), hence designing these signal in practice is not cumbersome and difficult at all with all the modern as well as cheap instrumentation and data acquisition equipment available.…”

Section: Resultsmentioning

confidence: 99%

Nonparametric Analysis of Nonlinear Distortions for Biomolecular Systems

Agarwal¹,

Dey

Relan

et al. 2018

IFAC-PapersOnLine

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System identification of biomolecular circuits is a challenging problem, including due to the nonlinearities that are often present in them. The extent to which these nonlinearities contribute to the overall behaviour of the biomolecular circuit is unclear. Here, we address this issue for simple biomolecular circuit models by exploiting the properties of broadband random phase multisine excitations. We analysed the classical models of a two-state signaling system, an enzymatic signaling system, and of a transcriptional feedback circuit for the presence of nonlinear distortions at certain parametric settings and studied their dependence on the input parameters. These results should help the modeller in quantifying the effect of nonlinearities and assessing the validity of the linear models at a particular operating condition.

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“…The development of digital techniques has contributed to the increase of popularity of the method [36][37][38][39][40][41][42][43], and it has been appreciated sufficiently to be introduced to commercial applications (http://www.gamry.com/ App_Notes/PDF/OptiEISAppNote.pdf).…”

Section: Introductionmentioning

confidence: 99%

A complete impedance analysis of electrochemical cells used as energy sources

Ślepski

Darowicki

Janicka

et al. 2012

J Solid State Electrochem

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A comprehensive description of impedance of electrochemical systems has been presented, along with the assumptions of the method used. In this method, a multisinusoidal current excitation signal is used. The changes of potential of both the electrodes and the potential difference between these electrodes are all registered simultaneously as a function of time. The proposed method offers the possibility of separately determining the instantaneous value of impedance of each electrode as well as the impedance of a twoelectrode system. The short-time Fourier transform of time registers allow the determination of changes in the measured impedance values over time. The method has been successfully verified with an electrical equivalent circuit simulating a non-stationary two-electrode system. The values of the impedance of particular components during operation of the fuel cell under a changing load have been obtained.

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Advantages of Odd Random Phase Multisine Electrochemical Impedance Measurements

Cited by 87 publications

References 50 publications

Measurements of Electric Performance and Impedance of a 75 Ah NMC Lithium Battery Module

Measurements of Electric Performance and Impedance of a 75 Ah NMC Lithium Battery Module

Nonparametric Analysis of Nonlinear Distortions for Biomolecular Systems

A complete impedance analysis of electrochemical cells used as energy sources

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