VFD

Variable Frequency Drive



A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.

                          VFD‘s are used in applications ranging from small appliances to the largest of mine mill drives and compressors. However, around 25% of the world’s electrical energy is consumed by electric motors in industrial applications, which are especially conducive for energy savings using VFDs in centrifugal load service, and VFDs’ global market penetration for all applications is still relatively small. That lack of penetration highlights significant energy efficiency improvement opportunities for retrofitted and new VFD installations.

VFD Advantages -

  • A VFD may be used for control of process temperature, pressure, or flow without the use of a separate controller. Suitable sensors and electronics are used to interface the driven equipment with the VFD.
  • Lower maintenance costs, as lower operating speeds result in longer life for bearings and motors.
  • The motor does not require a starter.
  • The ability of a VFD to limit torque to a user-selected level protects driven equipment that cannot tolerate excessive torque.
  • Users can utilize multi-motor applications, such as pumps or fans, with one control unit.
  • High-speed applications for the wood finishing industry.
  • And more