Patent ID: 7816822

Claim:
A multiphase electric motor comprising: a rotor having a rotor shaft, the rotor having rotor pole groups in which north(N)-poles and south(S)-poles are alternately arranged in a circumferential direction of the rotor shaft toward an air gap; a stator having an (N+1) number of stator pole groups (N is an integer of 3 or more) associated to respective phases of the motor, wherein each stator pole group includes a plurality of stator poles arranged in the circumferential direction towards the gap, corresponding stator poles of different phases being arranged at certain electric angles along the circumferential direction so as to be offset from each other; and a 2N number of loop windings arranged at the stator such that the loop windings are arranged between stator pole groups for the respective phases in an axial direction of the rotor shaft and loop windings for the same phase are arranged at both ends in the axial direction, wherein the (N+1) number of stator pole groups are arranged so that the stator pole groups corresponding to two phases having an electrical angle difference of about 180° are adjacent to each other.