Hi , 

I am using SVPWM for the inverter. Inverter is fed with a rectifier circuit connected with a capacitor in parallel. 

It was found when the SVPWM module is connected with the capacitor voltage it gives a error like that (Even though the initial voltage of the capacitor is given). And when SVPWM connected with a separate DC source there is no error. 

There is a possibility that FEA cannot initiate because it doesn't work untill the capacitor is fully charged.

Hope this might give you an idea.