A Variable Frequency Drive (VFD) is a type of motor controller that drives an electric motor by varying the frequency and voltage supplied to the electric motor. Other names for a VFD are variable speed drive, adjustable speed drive, adjustable frequency drive, AC drive, microdrive, and inverter
A variable frequency drive controls the speed of an AC motor by varying the frequency supplied to the motor. ... This section of the VFD is often referred to as the DC link. This DC voltage is then converted back into AC
