Title :
Analysis of burn out and random trips at starting of a 2984kW induction motor driving a main blower
Author :
Silva, L. ; Giancotti, K. ; Amaro, F. ; Pires, I.
Author_Institution :
Dept. of Mechatron. Eng., Fed. Univ. of Sao Joao del Rei, Ouro Branco, Brazil
Abstract :
A squirrel cage induction motor rated at 2984kW, 6,9kV, 60Hz, 3556rpm with direct start applied to drive a main blower in a blast furnace facility presents random trips during starts and also an event of motor burning. Those trips interrupt the motor starting by 50N or by 46N function actuations. Considering even the risk of motor damaging and the consequent interruption of blowed air supplying to the furnace, as the risk of human injuries by step or touch voltage, this paper presents the analysis and solution applied to eliminate those trips.
Keywords :
blast furnaces; induction motor drives; squirrel cage motors; starting; blast furnace facility; blowed air supply interruption; burn out analysis; direct start motor; frequency 60 Hz; main blower; motor burning; motor damage; power 2984 kW; random trip analysis; squirrel cage induction motor drive; step voltage; touch voltage; voltage 6.9 kV; Furnaces; Induction motors; Insulation; Rotors; Stators; Vibrations; Voltage fluctuations; blast; blower; burn out; furnace; random; trips;
Conference_Titel :
Industry Applications Society Annual Meeting, 2014 IEEE
Conference_Location :
Vancouver, BC
DOI :
10.1109/IAS.2014.6978450
