Electrical Circuit Model of a Vanadium Redox Flow Battery Using Extended Kalman Filter

M. R., Mohamed and H., Ahmad and M. N., Abu Seman and S., Razali and M. S., Najib (2013) Electrical Circuit Model of a Vanadium Redox Flow Battery Using Extended Kalman Filter. Journal of Power Sources, 239. pp. 284-293. ISSN 0378-7753. (Published)

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This paper presents an equivalent electrical circuit model for a unit cell all-vanadium redox flow battery (V-RFB). The developed V-RFB model consists of an open-circuit cell potential (Ecell(ORP)) which is in series with an ohmic internal resistance and parallel with an n-Resistor–Capacitor (n-RC) network. The Ecell(ORP) represents an intrinsic relationship of the V-RFB state-of-charge (SOC), while the n-RC networks represent the polarization characteristic and dynamic behaviour of the V-RFB. The Ecell(ORP) and ohmic resistance parameters are obtained through a direct measurement of an experimental setup of 25 cm2 unit cell laboratory unit V-RFB, whereas the two pairs of RC network parameters are identified through a recursive algorithm of extended Kalman filter (EKF). The accuracy of this model is verified with different pulse voltages at a few values of SOCs. Ultimately, the model is validated with an experimental charge–discharge characterisation of V-RFB system. Suggestion for system improvement is highlighted.

Item Type: Article
Uncontrolled Keywords: Vanadium redox flow battery; Electric circuit modeling; Extended Kalman filter; Energy storage
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Faculty/Division: Faculty of Electrical & Electronic Engineering
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 04 Aug 2015 04:34
Last Modified: 19 Apr 2018 01:10
URI: http://umpir.ump.edu.my/id/eprint/5921
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