# BLDC's number of positions

Given a 12-pole, 14-stator, 3-phase BLDC, how many possible positions are there? Since each stator could be aligned to each pole, there'd be a maximum of 14*12 = 168 positions. But how many of these are overlaps?

The reason I'm asking is that I'm trying to adapt the code here from a 9-stator, 12-pole BLDC to 14-stator, 12-pole.

EDIT: Mine's a 12-pole, 14-slot BLDC instead!

• It can be any position. You are not limited to the pole alignments. It can be between the poles too. – Eugene Sh. Oct 27 '16 at 14:20
• @EugeneSh. According to this, the 9-stator, 12-pole BLDC gives 36 positions though. I guess it assumes each "position" must be an alignment? – John M. Oct 27 '16 at 14:23
• Probably. But you BLDCs are often controlled using some sort of sine waves exciting the windings, giving an analog precision to the positioning (limited by the position sensor feedback resolution, of course). – Eugene Sh. Oct 27 '16 at 14:25
• @EugeneSh. Yes, I think that's what the code does. However, it mentions that there're 36 positions, but in the end it generates a PWM array of length 48. Does that mean the number of "positions" isn't important in this context? – John M. Oct 27 '16 at 14:33