[mrbigh]

Being that lately I have enough spare time, I did some research on the basics of the AC motor controller and found on the PIC website something very interesting, a complete block diagram and some schematic of the AC controller final stage, not very complex and as you can see, the IGTBs are paired for each AC leg with out hardware (fuse) protection. I imagine that if it will be an inrush load above the software parameters, the PFC based power supply will cease operation protecting the final stage devices. Also note the implementation of the "BRAKE Chopper" for recapture of Regen back to the main raw supply.