Instrumentação virtual para estudos de qualidade de energia elétrica e ensaios de materiais magnéticos.

Abstract

This work presents the design and implementation of virtual instruments with low cost and high degree of accuracy, to be used in introductory power quality studies, as well as testing of magnetic materials. In application related to power quality, the instrument has the functions of oscilloscope, spectrum analyzer and transient recorder. In applying the tests related to magnetic materials, the functions are: hysteresigraph dedicated to measuring losses in magnetic materials. The developed instruments are capable of displaying all the results on the computer screen and also generate files with documentation of measurements. The instrument dedicated to testing magnetic materials is also capable of generating signals to control other devices. Throughout this dissertation, were developed a set of hardware and software developed in LabVIEW language, for the acquisition and processing of data resulting from measurements.