Melhoria do rendimento de transformador com base em elementos de projeto

Abstract

This work presents an approach an algorithm for a transformer project of a small power (up to 1.5 kVA), single-phase with one primary and one secondary, in which it is possible to analyze the possible results. It will be discussed the efficiency equation and its function of constructive parameters, as well as the analysis of the losses involved in the transformation process, i.e., generated by the masse of copper (windings) and iron (from the core). The steps to determine the values of the constructional parameters will be presented such as the geometric and magnetic section of the core, the core window area and the area filled by the windings. A base-case study will be utilized to validate the algorithm developed. Furthermore, the results of the project will be presented from the implemented algorithm using the same transformer nameplate data (input voltage, output voltage, frequency and power), used in the base project. Finally, with the results and discussions, verified the validity of the algorithm and the possibility of using this work for future studies.