Desenvolvimento de um controlador digital para um conversor CC-CC utilizando FPGA

Abstract

This study presents the analysis, project and execution of a digitally controlled Flyback CC-CC converter. The main intent is to present the controller’s project using a FPGA, in which the PID was developed through the employment of the VHDL hardware description language, using a library that made the fixed point operations possible. The utilization of a reconfigurable logic device allowed a faster processing, if compared to other digital solutions, providing an easy reconfiguration of the controller constants. The obtained results with the controlled converter demonstrate the efficacy of the employment of a PID digital controller, granting a constant output tension, even with the occurrence of a small input tension and electric charge variation. Consequently, the applicability of logical reconfigurable devices regarding controlling was proven. Thus, it is up to the new designers the developing of techniques that allow a faster and more precise way of controlling than the ones currently available.