Mining – RPM

Investigated serious torsional vibration problem with 8500 HP slip ring recovery drive. Conducted detailed torsional simulation studies, harmonic and vibration measurements.
Conducted investigation into 3000 HP load commutated inverter (LCI) motor failure driving slow speed synchronous motor for a mining mill.
Conceptual design, Engineering specification, selection and implementation of one 3500 HP, and two 1750 HP Medium Voltage ASD, motor and control house for exhaust fan application for the mining industry.
Conducted field measurements and an investigation into 2×4000 HP GE DC drive flashover for a hoist application for a mining company.
Conducted a feasibility study for selecting three 12000 HP Cycloconverters versus Load Commutated Inverter (LCI) drives for a production hoist application for the deepest mine in North America.