Projeto e simulação do conversor CC-CA em ponte completa conectado à rede monofásica

Abstract

The DC-AC converter is crucial for applications in distributed generation since it is necessary to convert energy to interconnect a specific power source to the conventional electrical grid. This work proposes the design and simulation of a single-phase full-bridge DC-AC voltage source converter connected to the electrical grid in the Matlab/Simulink environment. It addresses the main aspects and results obtained in the converter simulation, analyzing its performance and behavior in the controlled system. This simulation will be based on project parameters and converter characteristics. The system comprises a DC-AC converter, DC bus, and L-filter at its output. PWM modulation is used to control the switching of the converter’s switches, along with the use of a PLL for grid synchronization, control of the DC bus voltage, and control of the converter’s output current. In general, the presented results demonstrate the feasibility and proper operation of the DC-AC converter. These findings will enable practical applications in distributed generation systems and other applications that require high-quality and stable conversion of direct current (DC) to alternating current (AC) power for grid connection. The positive results of this work contribute to advancing future research in energy conversion technologies, promoting energy efficiency, and facilitating the integration of renewable sources into the electrical grid.