Variable-frequency drive - Wikipedia
A variable-frequency drive (VFD, or adjustable-frequency drive, adjustable-speed drive, variable-speed drive, AC drive, micro drive, inverter drive, variable voltage variable frequency drive, or drive) is a type of AC motor drive (system incorporating a motor) that controls speed and torque by varying the frequency of the input electricity.

Variable Frequency Drive: Definition, Working, and Applications
Variable Frequency Drive Definition: A variable frequency drive is a device that regulates the speed and torque of an AC motor by altering the frequency and voltage of its power supply.

VFD (Variable Frequency Drive) - Working, Types & Applications
VFD stands for Variable Frequency Drive. As its name suggests it is an adjustable frequency drive that varies the frequency of the AC supply. Since the speed of an induction motor depends on the supply frequency, the VFD can be used to vary its speed.

What is a variable frequency drive? - Danfoss
A variable frequency drive (VFD) is a type of motor controller that drives an electric motor by varying the frequency and voltage of its power supply. The VFD also has the capacity to control ramp-up and ramp-down of the motor during start or stop, respectively.

In-Depth Guide to Variable Frequency Drives (VFD) - electrical engineer pro
What Is Variable Frequency Drive (VFD)? A Variable Frequency Drive (VFD) is a adjustable-speed drive integral to electro-mechanical drive systems, designed to regulate the speed and torque of AC motors by controlling and influencing the input frequency and voltage.

What is a Variable Frequency Drive (VFD)? - Control.com
In short, a variable frequency drive, or VFD, is a device that adjusts the frequency of the incoming AC current to a 3-phase motor while maintaining the output voltage from the VFD at a stead DC level, ensuring that the motor can respond to adjustments in the desired operating RPM. But how does a VFD actually work? Where are VFDs used?

What is a Variable Frequency Drive? - VFDs.com
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.

What is a VFD? - Library.Automationdirect.com
A variable frequency drive (VFD) is an electronic device used to vary the frequency of an AC voltage to adjust the speed of an AC motor. VFDs also provide start and stop control, acceleration and deceleration, and overload protection. Many VFDs are networkable, allowing them to integrate into and provide feedback to a process control system.

What is a VFD? Learn how Variable Frequency Drives work
What is a VFD (Variable Frequency Drive) and where is it used? A Variable Frequency Drive (VFD), also called a frequency inverter, frequency converter, or AC drive, is an electronic device that regulates the speed and performance of an electric motor by adjusting the frequency and voltage of the power supplied to it.

What Is a Variable Frequency Drive and Why Do You Need It?
Variable frequency drives (VFD) solve the challenges of driving 3-phase motors with careful speed control and efficiency without being overly cost-prohibitive in most cases. They can be configured to run in applications spanning from small standalone machine centers to vast networks of huge machines.