The Official Variable Frequency Drive (VFD) Distributing Blog

Many electricians apply Variable Frequency Drives (VFDs) to AC Motors that are not inverter rated. Many are not even aware that inverter rated motors exist.
Inverter rated motors are not required for inverter applications, however, when a VFD is applied to an inverter rated motor, the inverter rated motor has less chance of premature winding failure. Inverter rated motors have [...]

Often times those using a Variable Frequency Drive (VFD) may find themselves needing to connect a higher horsepower VFD to a single phase input power source.  Since most higher horsepower VFDs only accept three phase input as a power source, they are left with little options or alternatives. Don’t fret, there is a solution.
If you are using a Variable Frequency Drive (VFD) rated for [...]

If you do not yet know how a Variable Frequency Drive (VFD) works, it is recommended you visit our post entitled: How Does A Variable Frequency Drive (VFD) Work? prior to reading this post.
AC Three Phase Induction Motor RPM is determined by the formula:

RPM = (120 * Frequency) / # of poles in the motor

Since [...]

When applying a Variable Frequency Drive (VFD) to a new or existing application there are many factors to consider prior to making a firm decision on what type of Variable Frequency Drive (VFD) should be used. If one already has an existing application where VFDs seem to consistently fail, they should look to using a different VFD type for potential success. For a [...]