A Variable Frequency Drive (VFD) is an electronic device that controls the speed and torque of an electric motor by varying the frequency and voltage of its power supply. By adjusting these parameters, VFDs enable motors to operate more efficiently, reducing energy consumption and wear on mechanical components. VFDs are commonly used in various applications, including pumps, fans, and conveyors. They help maintain optimal performance in systems that require variable speed, allowing for better process control and energy savings in industrial and commercial settings.