A Variable Frequency Drive (VFD), also known as an Adjustable Frequency Drive (AFD) or Inverter, is an electrical device used to control the speed and torque of an electric motor. It accomplishes this by varying the frequency and voltage supplied to the motor, allowing precise control over its operation. VFDs are commonly used in industrial and commercial applications for a variety of reasons, including energy efficiency, process control, and equipment protection.VFDs allow for precise control of motor speed, which can be essential in applications where the load requirements change frequently or where a constant speed is not optimal.