Análise da funcionalidade de um motor-transformador

Abstract

Spending most of the time unnoticed, at different points in the electrical system, whether changing grid voltage levels or bringing mechanical equipment to life through electromechanical energy conversion, the electrical transformer and the three-phase induction motor are responsible for maintenance. of the activities of modern society, life without them being unimaginable. Despite being at different points in the production chain and performing completely different functions, the operating principle is strictly similar and, from this perspective, the equivalent circuit of both is practically the same, except for a small difference: the use of the secondary side. However, the existence of a three-phase induction motor operating as a motor and transformer at the same time is not known. In this sense, this work aimed to analyze the functionality of an induction motor that can operate as a motor and as a transformer simultaneously, through concentric windings and, from this, propose an equivalent circuit for this junction through the concepts of electrical circuits, formulations mathematics, tests, and experiments in the laboratory. In the laboratory, several tests were carried out in order to measure the voltages, currents and powers in this equipment. From this information, parameter values were calculated for both functions and, thus, to analyze the proposed thesis.