dc.contributor.author | Janse van Rensburg, Angelique | |
dc.contributor.author | Van Schoor, George | |
dc.contributor.author | Van Vuuren, Pieter A. | |
dc.date.accessioned | 2016-04-11T07:52:15Z | |
dc.date.available | 2016-04-11T07:52:15Z | |
dc.date.issued | 2014 | |
dc.identifier.citation | Janse van Rensburg, A. et al. 2014. Active surface area approximation in a lead-acid cell for optimal performance in renewable energy systems. IFAC 2014. Proceedings of the 19th World Congress. IFAC proceedings, 47(3):9450-9455. [https://doi.org/10.3182/20140824-6-ZA-1003.01642] | en_US |
dc.identifier.issn | 1474-6670 | |
dc.identifier.uri | http://hdl.handle.net/10394/16897 | |
dc.identifier.uri | https://www.sciencedirect.com/science/article/pii/S1474667016431071 | |
dc.identifier.uri | https://doi.org/10.3182/20140824-6-ZA-1003.01642 | |
dc.description.abstract | In a renewable energy system, lead-acid batteries are required to last as long as possible whilst
providing deep discharges and are usually charged in an intermittent manner. This type of operation is
severely detrimental to the electrodes and optimal performance cannot be guaranteed. Correct operation
can be achieved if a charge controller receives accurate information about the state of the battery and its
cells. Accurate approximation of the available active surface area is essential to optimal performance
since it determines the overall capacity and reaction rates of various secondary processes. This paper
improves on the current understanding of the active surface area in a lead-acid cell during discharge by
comparing three approximation methods. Two methods use the state-of-charge based on porosity whilst
the other method uses the charge per unit volume to determine the remaining capacity. These three
methods are used in a comprehensive macro-homogeneous electrochemical model which accounts for
initial temperature differences. Reported experimental behaviour is used to evaluate each method and
recommendations are made regarding the selection of associated parameter values. The approximation
method by Cugnet et al. (2009) is the most suitable because it always results in a concave morphology.
The current work can aid in the development of a health-conscious battery management system | en_US |
dc.description.sponsorship | HySA
Infrastructure | en_US |
dc.description.uri | http://www.ifac-papersonline.net/ | |
dc.language.iso | en | en_US |
dc.publisher | IFAC | en_US |
dc.subject | Reliability | en_US |
dc.subject | energy efficiency | en_US |
dc.subject | lead-acid battery | en_US |
dc.subject | electrochemical model | en_US |
dc.subject | active surface area | en_US |
dc.subject | electrode morphology | en_US |
dc.title | Active surface area approximation in a lead-acid cell for optimal performance in renewable energy systems | en_US |
dc.type | Presentation | en_US |
dc.contributor.researchID | 12134457 - Van Schoor, George | |
dc.contributor.researchID | 10732926 - Van Vuuren, Pieter Andries | |
dc.contributor.researchID | 20160135 - Janse van Rensburg, Angelique | |