Aprimoramento de uma bancada automatizada de um freio de Foucault utilizada para ensaios de motores de indução

Abstract

This paper consists in the improvement of an automated stand with a Foucault’s Brake, located in the Institution UTFPR – Medianeira Campus. The Foucault’s Brake, also known as Electrodynamics’ Brake, consists in a disc-shaped rotator linked to an electric engine. The disk spins inside a magnetic field whose intensity it’s controlled through one coil fed by a direct current. The current’s variation through this coil increases or decreases the strength of the equipment’s braking. With the use of the software Easy Soft Codesys, it was develop a system supervision which the stand’s user can access a Interface Man-Machine. This system allows the activation of until five kinds of starts and also the option to open any of the engine’s phases. The supervisory system allows the verification of the current’s answer, tension and torque in the engine through graphics. For the development of this project it were used transducers of alternating current, direct current, tension and load cell, which combined to PLC (Programmable Logic Controller) do the data acquisition of the magnitudes involved.