Title :
The application of a medium voltage (4160 VAC) variable frequency drive on an underground mine belt conveyor system
Author :
Kitts, Victor L. ; Stees, William K.
Author_Institution :
Pemco Corp., Bluefield, VA, USA
Abstract :
High performance underground mine conveyor belts require special starting and operating characteristics. This paper is a summary of how a medium voltage (4160 VAC) variable frequency drive (VFD) was used to meet these requirements. The belt drive system consists of a mandated primary switch gear, drive rated transformer with controlled inductance, variable frequency drive, output switchgear and operational requirements. Items addressed are as follows: repackaging and reconfiguring of a commercial drive for an underground mine environment; harmonic cancellation in feeder circuits; basic control concepts; and special electrical safety requirements such as high resistance neutral grounding with sensitive ground fault tripping, belt slip, belt sequence, belt take-up requirements, etc. At the time of the writing of this paper the belt drive system has completed one year of successful and reliable operation
Keywords :
AC motor drives; conveyors; earthing; harmonics suppression; inductance; mining; safety; starting; transformers; variable speed drives; 4160 V; belt sequence; belt slip; belt take-up requirements; commercial drive reconfiguration; controlled inductance; drive rated transformer; electrical safety requirements; feeder circuits; harmonic cancellation; high resistance neutral grounding; mandated primary switch gear; medium voltage variable frequency drive; operating characteristics; operational requirements; output switchgear; repackaging; sensitive ground fault tripping; starting; underground mine belt conveyor system; variable frequency drive; Belts; Circuits; Control systems; Electric variables control; Frequency; Gears; Inductance; Medium voltage; Switches; Switchgear;
Conference_Titel :
Industry Applications Conference, 2000. Conference Record of the 2000 IEEE
Conference_Location :
Rome
Print_ISBN :
0-7803-6401-5
DOI :
10.1109/IAS.2000.883208
