A 3-states mode lead-acid battery charger simulation for medical applications
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Keywords

battery
PI control
Buck converter
3-states charger

How to Cite

López, J. P. R. ., Sánchez, M. Ángel Z. ., Utrilla, . C. G. C. ., Balcázar, . . A. P. ., Sánchez, A. L. ., & Mena, . J. A. B. . (2022). A 3-states mode lead-acid battery charger simulation for medical applications. South Florida Journal of Development, 3(5), 6128–6137. https://doi.org/10.46932/sfjdv3n5-033

Abstract

The design and simulation of a battery charger is presented, for medical applications using three-state mode charge, containing a Buck converter and a lead-acid battery. Implementing Proportional Integral (PI) controllers, to modify the duty cycle of the Buck converter, in such a way that the battery is subjected to the 3 states during the charging process, the PI controller reference changes for each of the 3 states. In this way the battery is subjected to the 3 states with a single PI controller. In order to predict the current and voltage values ​​to which it would be subjected in the real system in a charging process with this algorithm, it was possible to obtain the battery charge graphs, which describe all the voltage and current values. that the actual battery will undergo in a 3-state charge. Concluding that the charging current is maintained at adequate values, however there is a possibility that in state 2, the voltage exceeds the tolerated overvoltage value, so it is recommended to reduce the voltage reference in state 2.

https://doi.org/10.46932/sfjdv3n5-033
Full Text (PDF)