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

fYear

2014

fDate

5-9 Oct. 2014

Firstpage

1

Lastpage

5

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Society Annual Meeting, 2014 IEEE

Conference_Location

Vancouver, BC

Type

conf

DOI

10.1109/IAS.2014.6978450

Filename

6978450