Patent ID: 6265804
Filing Date: 2001-07-24
Classification: H02K

Abstract:
An electric motor comprising:a rotor; anda stator including a plurality of unit cores each of which has two ends, the unit cores being disposed so that the ends of each unit core are adjacent to the ends of the neighboring unit cores respectively, each unit core including a yoke section and a plurality of salient poles which are integral with the yoke section and on which windings are wound, wherein each unit core includes the salient poles the number of which is represented as CM(NT/CD(Nt, Np), Nf) where CM(A, B) is a common multiple of integers A and B, CD(A, B) is a common divisor of integers A and B, Nt is a total number of salient poles of the stator, which is equal to or larger than 2, Np is a total number of magnetic poles of the rotor, which is equal to or larger than 2, and Nf is the number of winding phases.