WHAT YOU NEED TO KNOW ABOUT ELECTRIC MOTORS

The world of electric motors can be daunting. How do they work? What size do I need? How many do I need to power my operation? The experts at Valley Power Systems can help you with all of that. As an authorized distributor for U.S. Motors, we can help you determine which electric motor(s) will best suit your business needs.

Variable Frequency Drives (VFD)

A VFD is a type of controller used to vary the speed of an electric motor. The VFD takes a fixed AC voltage and frequency and allows it to be adjusted in order to get different speeds from the motor. Motor speed can be varied by changing the frequency of the input power waveform. The equation below shows how the frequency affects the speed of a three-phase induction motor.   120* Fundamental Input Frequency Speed = -------------------------------------------------- Number of Motor Poles  

How...