Quote Originally Posted by BillTodd View Post
The vfd is not a three phase supply. It is designed to drive a motor only.

If you add in a transformer into the mix , it change the phase of voltages and currents that the vfd monitors and controls .

If you're looking for a simple answer to powering a 3ph machine from single phase then a rotary converter would probably be your best option.

Bill
This is even more true with a vector drive as it 'talks' to the motor as it were to fine tune it's parameters and estimate the rotational state of the rotor.