SYNCHRONOUS ELECTRIC MOTOR

摘要

A synchronous electric motor, comprising a rotor 2 and a stator 3, wherein a plurality of stator teeth 7 form stator teeth groups 8 with three stator teeth 7 lined up circumferentially forming one group; for the three stator teeth, a main coil is independently wound and sub-coil is further wound around at least one of the stator teeth; coils in one phase are constituted by, in series, the three main coils included in one of the stator teeth groups 8 and sub-coils included in other stator teeth groups, serially connected; and coils in another phase comprise the sub-coils included in one of the stator teeth groups 8 as well as three main coils included in other stator teeth groups.