Patent ID: 7560835

Claim:
A primary part of an electrical induction machine, comprising: a plurality of modules, each having teeth situated in a row, and having at least partially encircling slots; wherein: in the slot of each tooth a coil is wound around the tooth, and the coils of a single module are connected to a single phase of a rotary current network, the number of modules in the primary part equals the number of current phases or an integral multiple thereof, a single module includes an uneven number of teeth, the uneven number of teeth being at least three teeth, teeth, directly adjacent to one another, of a single module include coils having an opposite winding direction, which generates an opposite magnetic field polarity at the teeth, a last coil of a last tooth of each single module is connected to a neutral point of a star connection, at least one weak double pole is created by adjacent teeth of adjacent modules, the at least one double pole resulting from weak magnetic field polarities of the same kind, the weak magnetic field polarities being less than a maximum amplitude of the magnetic field.