Projeto e implementação dos compensadores aplicados ao circuito de controle em malha fechada para um conversor Buck

Abstract

With the advancement of technological equipment and its applications, some areas can be connected, as is the case of power electronics and the control area. In this work, it is intended to integrate these two areas through DC-DC converters and proportional and integral (PI) control. Thus, it was shown that, with the help of some methodologies it is possible to obtain the compensators, contained in the control theory, to drive the Buck converter. For this purpose, it was used the SG3524 integrated circuit, produced by STMicroeletronics, to produce the effect of pulse width modulation, PWM, and then correct the output voltage of the converter to a constant value and with the lowest noise value, given the characteristics of the project. From the design and implementation of the PI control action compensators, the observed signals met the design specifications of the control system. It could be observed, also, the feasibility of the work done because the compensators sized for the project managed to meet the PI controller action.