Application of AC Induction Motors with Variable Frequency Drives

Variable frequency drives (VFD´s) have been available to the cement industry for a number of years. However, with improvements to VFD´s (power quality, reliability, stability, costs), their increased acceptance and with the emphasis to cut production costs, VFD usage has become more widespread. This paper seeks to provide professionals in cement plant design and operation with an introduction to the use of VFD control for AC induction motors and how to more effectively specify AC induction motors for VFD applications.