4 - Kuwait Oil Company

speed drive is used widely in production, gas and export facilities to reduce power consumption as well asthe high inrush current caused by starting induction motors. Moreover, scalar control is one of the betterunderstood and widely used technologies used, among other technologies, at KOC.One example of where VSD is being used includes compressors, which are used in a wide variety ofapplications. Their task is to pump and compress gases to almost any pressure level in addition to fulfillinggeneral requirements regarding efficiency; however, availability and a high power density are also decisivefactors in their operation.Saving energy can be achieved by using VSDs. The following example shows a simple application of whereVSD can save energy:• Fans and pumps are the most commonenergy saving applications.• In fixed speed mode, airflow can beregulated by using a damper.• In VSD, it’s more efficient to regulatethe speed of the motor and accordinglyairflow will be regulated.October - December 2012 21