Métodos de controle discreto aplicados a conversores estáticos de potência CC-CC do tipo Buck

Abstract

Nowadays virtually all electronic instruments use some type of power conversion. Being the static converters of vital importance in nowadays’ world, its control is also essential, for the domain over its output variables and automatic control of variables with fast dynamics. In this paper, two control strategies were developed to operate a static power converter, Buck type, a DC-DC converter voltage down, in order to compare the performance of the methods. Discrete controllers were developed, first a PI controller, and then a control through state space. The results obtained in the simulations were satisfactory for both controls, but the PI controller presented better results and was better suited to the converter. To verify the results, a Buck converter was developed and a PI control strategy was performed using a microcontroller. The result was satisfactory, since in front of a load variation, the converter managed to reestablish its voltage signal.