Abstract: A dynamo-electric machine includes a primary part having a plurality of teeth, grooves that are located between the teeth and a yoke that is produced from a ferromagnetic material, a secondary part that is spaced apart from the primary part via an air gap and comprises a plurality of permanent magnets that lie adjacent to one another with alternating polarity, a multi-phase tooth coil winding that is arranged in the grooves, wherein adjacent tooth coils are connected to form groups having an identical electrical phase, wherein adjacent teeth of the groups of tooth coils having an identical electrical phase are connected in a magnetically conductive manner via the yoke and the yoke is interrupted between adjacent tooth coils having a different electrical phase.