Análise das topologias meia ponte e ponte completa para uma fonte chaveada simétrica ± 50 V

Abstract

This work has the objective of performing the analysis of the half-bridge and full bridge topologies for a symmetrical ± 50 V switched-mode power supply. It presents a study on the operation of these topologies, making the survey of equations that allow to determine the stresses of current and tension on its components. Is presented information for the realization of a design of a transformer and a inductor in high frequency. A method of testing the transformer is presented for a more accurate simulation of the circuit. Based on a cost analysis is determined which topology is the most effective for the project. Information about the switched-mode power supply design as a whole is also presented, including input rectifier capacitor preload circuit, PWM modulation circuit and inverter circuit, and high frequency rectifier. The main contribution of this work is the accomplishment of a survey of data that help the designers in the choice between these topologies for the elaboration of their projects.