Baratieri, Cássio LucianoSerrano, Lucas2022-02-012022-02-012020http://repositorio.uricer.edu.br/handle/35974/376Electric Cars play a promising role in modern society, as they are configured as a sustainable alternative for the mitigation of air and noise pollution levels. As a result, studies applied to the analysis of the energy processing systems of electric cars are of paramount importance, especially for battery charging. For this reason, the present work aims to analyze, simulate and implement in practice a SEPIC Bridgeless converter operating in Discontinuous Driving Mode (MCD) applied to the charging of batteries for use in electric cars. The choice of the Bridgeless topology was due to the reduction of thermal and internal losses of the converter, since the number of semiconductor devices in the current path is less. The MCD, in turn, was selected due to the fact that it is only necessary to control the voltage and output current of the SEPIC Bridgeless converter, and the high power factor is naturally obtained without controlling the current input. Then, the analysis of currents and voltages in the converter components began. Then, the design of the power circuit was elaborated together with the control of the converter. In addition, an attempt was made to analyze a mathematical model of a lead-acid battery in order to connect it to the converter for complete system validation. The results presented in the bench tests converge with the converter simulation results, and it was possible to obtain a power factor of 0.98 at the converter input experimentally. Regarding the use of the battery, simulation results were obtained for charging the battery in constant current until reaching its nominal voltage, to then be maintained at its maintenance voltage.pt-BREngenharia ElétricaCarro elétricoCarregamento de bateriasModo de condução descontínuoTrabalho de Conclusão de Curso