Performance analysis of a battery charger with BQ24650
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Date
2016-11-09
Journal Title
Journal ISSN
Volume Title
Publisher
INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS INC.
Abstract
This paper analyzes the smart charger performance for solar photovoltaic energy applications on isolated generating systems with a synchronous buck converter topology using a BQ24650 charger controller from Texas Instruments. The solar battery charger includes different operating modes, which may be voltage or constant current, both help to increase the battery life, also uses a maximum power tracking algorithm with the voltage tracking method, thus, optimizing the energy captured by the solar panel. This analysis shows in detail a theoretical study of the main conduction and switching losses. The battery charger works up to 50 watts at rated power, its performance is greater than 94%. The main losses are the transistor conduction losses, which represent 42% of the total losses. The experimental results are compared with the theoretical analysis, obtaining similar results which support the study.
Resumen
Keywords
Battery, Buck Converter Synchronous, Charger, Mppt