1). Whatis a VFD, and what does it do in an electrical system?A motor controller known as a variable frequency drive (VFD), often referred to as an adjustable-frequency drive (AFD), an adjustable-speed drive (ASD), or an AC drive, controls the frequency and voltage of an electric motor’s power source. The VFD may also regulate the motor’s ramp-up and ramp-down during start and stop, respectively.VFDs are frequently put in electrical systems connecting the power source & the motor. The incomi