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A Suggested Improvement for Small Autonomous Energy System Reliability by Reducing Heat and Excess Charges

1
Mainate Labs, 77430, 25 rue de Sens, Champagne-sur-Seine, 77430, France & GEII Department, IUT Gratte-Ciel, 17 rue de France, 69627 Villeurbanne Cedex, France
2
Electromechanical Department, Saint-Petersburg Mining University, 21st line 2, Saint-Petersburg 199106, Russia
*
Author to whom correspondence should be addressed.
Batteries 2019, 5(1), 29; https://doi.org/10.3390/batteries5010029
Received: 30 January 2019 / Revised: 19 February 2019 / Accepted: 6 March 2019 / Published: 11 March 2019
(This article belongs to the Special Issue Batteries and Supercapacitors Aging)
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PDF [2127 KB, uploaded 11 March 2019]
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Abstract

Devices operating in complete energy autonomy are multiplying: small fixed signaling applications or sensors often operating in a network. To ensure operation for a substantial period, for applications with difficult physical access, a means of storing electrical energy must be included in the system. The battery remains the most deployed solution. Lead-acid batteries still have a significant share of this market due to the maturity of their technology. However, even by sizing all the system elements according to the needs and the available renewable energy, some failure occurs. The battery is the weak element. It can be quickly discharged when the renewable energy source is no longer present for a while. It can also be overloaded or subjected to high temperatures, which affects its longevity. This paper presents a suggested improvement for these systems, systematically adding extra devices to reduce excess charges and heat and allowing the battery use at lower charges. The interest of this strategy is presented by comparing the number of days of system failure and the consequences for battery aging. To demonstrate the interest of the proposed improvement track, a colored Petri net is deployed to model the battery degradation parameters evolution, in order to compare them. View Full-Text
Keywords: autonomous devices; lead-acid batteries; Petri nets autonomous devices; lead-acid batteries; Petri nets
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Savard, C.; Iakovleva, E.V. A Suggested Improvement for Small Autonomous Energy System Reliability by Reducing Heat and Excess Charges. Batteries 2019, 5, 29.

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