Aprimoramento de um conversor CC-CC de alto ganho Quasi-Z-Source

Abstract

In this work a study about a non-isolated high gain DC-DC converter with Quasi-Z-Source topology using coupled inductors was discussed. This converter is part of a system responsible for feeding through solar panels an electric traction system on a tricycle for wheelchair users. The objective of the work is to present solutions that reduce the volume of the converter board and a power dissipation of our components. The method used to achieve the purpose of the duty cycle and the frequency of operation of the drive. For analysis, an algorithm is used that examines an influence of the various combinations of duty cycle and frequency on the losses and volume of the circuit and returns data that allows a choice of a state that will present satisfactory results. A replacement of the system components is also focus in this work because some devices have parameters that can significantly increase the efficiency of the converter.