For small horse power applications single phase is okey
for high power applications , suppling single phase to driver will couse un balanced load to the utility side, and you will need larger filters to smoth the dc side of the circuit, right?
Well Barton your not wrong. Truth be told is most VFD mfg’s won’t build a drive for single phase operation above 5HP anyway. You might find the odd 10HP drive that will accept single phase but above that they usually require 3 phase power. Now if single phase power is all you have available, you can get what is called a “Phase Converter” that will generate 3 phase power from your single phase supply.
Hope this helps
Ok Barton had to do a little research for this 1. A company called “Phase-A-Matic” builds up to 100HP rotary phase converters. However, if you are line starting a motor directly off of the converter, these guys will only do up to a 50HP motor and provide full starting torque. Reason being that AC induction motors line started will pull 5 times their rated current.