# BLDC rotor and stator poles

1. ### jainabhs

31
hi,
There is one thing that I do not understand and nor do I find any direct explanations for it.
Is there any relationship between no of rotor poles and no of stator poles in BLDC motor (or PM Synchronous Motor)? I have read somewhere there doesnt have to be. I can imagine if no of poles are same then each rotor pole would interact with stator pole. But it is difficult for me to imagine if the numbers are unequal.
Can somebody explain or point to any resource...

aj

31