A switched reluctance motor driven by a polyphase source includes a stator having a yoke and a plurality of evenly spaced salient poles distributed about the yoke and a rotor mounted for rotation relative to the stator having a plurality of unevenly spaced salient poles. The geometry of the stator and...http://www.google.com/patents/US5111095?utm_source=gb-gplus-sharePatent US5111095 - Polyphase switched reluctance motor
