Because of the high-power consumption, the factories and plants find yourself paying a high amount of energy bills. To beat the high-power consumption and to extend efficiency, VFD was introduced four decades ago but the circuitry wasn't strong enough.

Applications of VFD:

They are mostly utilized in industries for big induction motor (dealing with variable load) whose power rating ranges from few kW to few MW.

Variable Frequency Drive is employed in traction system. They are also utilized in modern lifts, escalators and pumping systems. Nowadays they're being also utilized in energy efficient refrigerators, AC’s and Outside-air Economizers.