A rotary electric machine includes a stator core having a plurality of slots disposed at an inner periphery, an armature winding disposed in the slots and a rotor disposed inside the inner periphery of the stator. The rotor includes a first rotor portion and a second rotor portion, which are disposed...http://www.google.ca/patents/US6563246?utm_source=gb-gplus-sharePatent US6563246 - Rotary electric machine for electric vehicle
