Proposta de recuperação de energia utilizando uma máquina de indução

Abstract

The increasing consumption of electrical energy brings with it the increasing need to improve the efficiency of operation of machines and equipment, especially in the industrial sector. It is observed that in the industry there are loads coupled to the motors that have a high moment of inertia, and the kinetic energy stored in these loads are not used when they are turned off. In view of this situation this work presents a proposal for the development of a system that is capable of performing the recovery of kinetic energy in high inertia loads. The operation of this system is based on the use of the frequency inverter to control the feed frequency of a three-phase induction machine. The frequency inverter receives the command signals from a microcontrolled system, which will also monitor the current in the DC bus of the frequency inverter to perform the estimation of the speed of the three-phase induction machine. The results presented are promising for the use of this system in an industrial environment, where the energy stored in a high inertia load through the feed frequency of an induction machine coupled to the load.