Online Impedance Spectroscopy Estimation of a Battery EPEv2.pdf (1.08 MB)
Online impedance spectroscopy estimation of a battery
conference contribution
posted on 2017-05-12, 15:35 authored by Mina Abedi Varnosfaderani, Dani StricklandDani StricklandElectrochemical 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.
Funding
The authors would like to thank the EPSRC and Opal-RT for their contribution to this project.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
EPE 2016 ECCE 2016 18th European Conference on Power Electronics and Applications, EPE 2016 ECCE EuropeCitation
VARNOSFADERANI, M.A. and STRICKLAND, D., 2016. Online impedance spectroscopy estimation of a battery. 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe), Karlsruhe, Germany, 5th-9th September 2016.Publisher
© IEEEVersion
- AM (Accepted Manuscript)
Acceptance date
2016-08-01Publication date
2016Notes
© 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.ISBN
9789075815245Publisher version
Language
- en