Which type of load is a VFD primarily used to control?

A Variable Frequency Drive (VFD) is primarily used to control inductive loads, such as motors. These loads are common in industrial applications where electric motors are used to drive pumps, fans, conveyors, and other machinery. The VFD adjusts the frequency and voltage supplied to the motor, allowing for precise control over the motor speed and torque, which is critical for optimizing performance and energy efficiency in inductive applications.

Inductive loads are characterized by their reliance on magnetic fields to operate, as opposed to resistive loads, which convert electrical energy almost entirely into heat and do not need frequency modulation for control. Using a VFD with an inductive load enables various benefits, including smoother starting, reducing mechanical stress on equipment, extending equipment life, and providing better control over the process involving the motor.