Re: How to shifted phases in PIC18f4431
moving to dsPIC will not improve a thing if you don't know what to do.
MCC will not help if you don't know what to do with it.
I don't understand why almost all of your replies are about moving to a newer part and using MCC when it will not solve the issue.
To the OP, the idea is that you enable/disable the PWM generators in sequence.
I assume that you are familliar with the six step commutation method?
Using PWM to regulate the speed means that you still follow the six step commutation, but you enable/disable PWM channels instead of setting pins high and low.