Online impedance spectroscopy estimation of a battery


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:
Divisions: College of Engineering & Physical Sciences > Power Electronics, Machines and Power System (PEMPS)
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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
ISBN: 978-907-581524-5
Last Modified: 10 Jun 2024 07:50
Date Deposited: 12 Dec 2016 13:40
Full Text Link: http://ieeexplo ... cument/7695638/
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Conference contribution
Published Date: 2016-10-25
Accepted Date: 2016-09-01
Authors: Varnosfaderani, M.A.
Strickland, D. (ORCID Profile 0000-0002-2979-4479)



Version: Accepted Version

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