APLICAÇÃO DE INVERSOR DE FREQUÊNCIA EM COMPRESSOR DE AR COMPRIMIDO A PISTÃO – COMPRESSOR DE MÉDIO PORTE

Abstract

This work presents an analysis of energy consumption during the start of a three-phase induction motor in a reciprocating piston compressor. It is of great importance that we analyze the starting current to correctly size the motor starting conductors and components, the starting moment of a motor and the most critical period. The analyzes started in a small industry located in Varginha, in the south of Minas Gerais, in a motor of 5 hp engine for analysis. The application of frequency inverter in compressed air compressors to decrease the starting current and consequently lower the electrical consumption of the compressor compared to the direct starting method. Two ways of starting were chosen for comparative analysis, direct starting and with frequency inverter, so we focused on the starting current and starting ramp so as not to damage the three-phase induction motor, extending the life of the motor. The task of collecting the data in each of the steps was through the use of the FLUKE model 435 Power Quality and Energy Analyzer. The objectives were achieved, it is possible to highlight the great

reduction in the inrush current using the frequency inverter to control the starting the three- phase induction motor installed on the reciprocating piston compressor.