I know of two ways to arrange a three-phase DC motor armature with respect to the magnets: one is the normal one seen in toy motors, where there are three armature poles for every two magnets; the other is fairly common in RC brushless "outrunner" motors (and possibly in DC brushless motors in general), here there are three armature poles for every four magnets.
Does anyone know if these arrangements have NAMES in academic or commercial circles? Meaning, if I asked a motor designer what they were, what names would I get back?
TIA