It sounds like so far this assumes that the 3 phase has the same characteristics as mains provided 3 phase.
A VFD has to control frequency and MEAN voltage and current and usually does this through PWM signal that is sine wave in shape, if it did not, the 3 phase rectifier and capacitor bank on the input of a 220v VFD would provide constant sine wave of >300v amplitude due to the level of the DC.
In any case, all the VFD's I have used have a parameter setting for motor voltage, within the VFD range that is.
Also because it is electronically produced, there is no Star or Delta, just three phases spaced 120deg apart with ~220v between phases.
N.