20 Belgium 
3 Canada 
2 UK 
1 Australia 
AC Variable Frequency Drives
- Address: Wattle Street Asquith NSW 2077, NSW, Australia
- Email:
- Phone: 61291130618
Business description
A VFD (see http: //www.vfds.
org ) is a system for controlling the
rotational speed of an AC electric motor by controlling the frequency of
the electrical power supplied to the motor.
A VFD is a specific type of
variable frequency drive.
VFDs are also known as adjustable frequency drives (AFD), variable speed drives (VSD), AC drives or inverter drives.
Since the voltage is varied along with frequency, these are sometimes also called VVVF (variable voltage variable frequency) drives.
VFD is widely used in ventilation systems for large buildings; variable speed motors on fans save energy by allowing the volume of air moved to match the system demand.
They are also used on pumps, elevator, conveyor and machine tool VFDs.
VFD installations can increase energy efficiency (in some cases energy savings can exceed 50%), improve power factor and process precision, and provide other performance benefits such as soft starting and over speed capability.
They also can eliminate the need for expensive and energy wasting throttling mechanisms such as control valves and outlet dampers.
Latest listings
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Variable Frequency Drive ApplicationsElectrical Engineering - AC Variable Frequency Drives - Australia - December 23, 2013 - contact company for priceIn the past, the flow in most variable-flow air moving systems were controlled by a damper at the inlet of the fan scroll or in some cases by a variable pitch drive sheave. For most of these applications a variable frequency drive is much more effici...
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