Design and Implementation of SEPIC Converter

Abstract

Because of challenges with burning fossil fuels as an energy source and as a means of reducing global gas emissions, renewable energy sources has grown in demand in recent years. As a result, renewable energy has become the majority of energy-related research. However, most of the energy sources produce low voltage electricity for effective transmission. To synchronize the sourced electricity with the grid, step-up voltage converters with extremely high voltage are required. Furthermore, because the efficiency and reliability of conventional boost converters decline as the switch duty increases. It suffers from high voltage which might damage the load. SEPIC converters which is the modification of buck-boost converter implies more efficiency and less output ripple. So, this project is about the implementation of SEPIC converters by keeping its advantages in view. To improve gain and reduce ripples in output, we have used mathematical modeling which is mentioned in the project report. Then, the controller is designed for feedback loop to achieve constant output voltage. Simulation is performed in PROTEUS and result is validated by implementation on PCB. Furthermore, by hardware implementation of converter and controller, results are being verified.