PERMANENT MAGNET ROTATING ELECTRIC MACHINE WITH ARMATURE HAVING INDENTED SALIENT POLE PIECES

摘要

A ROTATING ELECTRIC MACHINE An Electric rotating machine comprises a field permanent magnet which is permanently magnetized to N and S poles alternately and an armature core which is arranged coaxially with the magnet and has a plurality of salient poles faced to the magnet. Poly-phase coils are wound on the root of the salient poles. According to arranging an indented portion at the major face of the salient pole facing to the magnet, a cogging torque can be remarkably reduced, and further by arranging auxiliary salient poles ripple torque can be also reduced. - 0 - 0