Single- and three-phase alternating current (AC) motor speed can be controlled by controlling the frequency of the voltage coming to it. Motor speed has a lot to do with the capacity of refrigeration ...

Variable frequency drives (or VFDs) are widely used throughout industry to provide adjustable speed control of ac motors. Although modern versions are relatively simple to install and operate, VFDs ...

Vacon AC drive located between cabinets. Whether they’re employed for specific energy saving reasons or to optimize the life of the motors they’re connected to, AC drives have increasingly become a ...