Online impedance spectroscopy estimation of a battery

Varnosfaderani, M.A. and Strickland, D. (2016). Online impedance spectroscopy estimation of a battery. IN: 2016 18th European Conference on Power Electronics and Applications, EPE 2016 ECCE Europe. IEEE.

Abstract

Electrochemical impedance spectroscopy (EIS) is a helpful tool to understand how a battery is behaving and how it degrades. One of the disadvantages is that it is typically an 'off-line' process. This paper investigates an alternative method of looking at impedance spectroscopy of a battery system while it is on-line and operational by manipulating the switching pattern of the dc-dc converter to generate low frequency harmonics in conjunction with the normal high frequency switching pattern to determine impedance in real time. However, this adds extra ripple on the inductor which needs to be included in the design calculations. The paper describes the methodology and presents some experimental results in conjunction with EIS results to illustrate the concept.

Publication DOI: https://doi.org/10.1109/EPE.2016.7695638
Divisions: Engineering & Applied Sciences > Electrical, Electronic & Power Engineering
Engineering & Applied Sciences > Power Electronics, Machines and Power System (PEMPS)
Additional Information: -© 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Event Title: 18th European Conference on Power Electronics and Applications
Event Type: Other
Event Dates: 2016-09-05 - 2016-09-09
Uncontrolled Keywords: batteries,DC/DC converters,frequency analysis,impedance spectroscopy,Energy Engineering and Power Technology,Electrical and Electronic Engineering
Full Text Link: http://ieeexplo ... cument/7695638/
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
Published Date: 2016-10-25
Authors: Varnosfaderani, M.A.
Strickland, D. ( 0000-0002-2979-4479)

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Version: Accepted Version


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