The capacitor acts as a Blocker, Resistor, and capacitor, the capacitor makes it possible for the fet to go into LOOP MODE more smoothly < Without the capacitor i also did not get Square waves with 3 phase Full Bridge rectified harmonics on top of the square wave. The capacitor also make ease of regulation!
With my 6 cell setup, i could not gain harmonics without the capacitor, i also could not regulate smoothly,, The capacitor also helps to Prevent Back EMF Spikes from damaging the FET.
This schematic was not put on paper then tried, it was found by accident.