Patent ID: 6847135

Claim:
A unipolar transverse flux machine, comprising a rotor ( 12 ) which is rotatable about a rotor axis and including at least one rotor module ( 15 ) composed of two coaxial, axially spaced-apart, ferromagnetic rotor rings ( 16 , 17 ) having teeth over their outer circumference with a constant tooth pitch, a permanent magnet ring mounted between the rotor rings ( 16 , 17 ), the magnet ring magnetized in unipolar fashion in the direction of the rotor axis, a stator ( 11 ) surrounding the rotor ( 12 ) concentric with the rotor axis, the stator ( 11 ) including at least one stator module ( 14 ) associated with each rotor module ( 15 ) and having a number, corresponding to twice the number of ring teeth, of preferably laminated, yokelike stator poles ( 24 , 25 ), the stator poles being offset from one another in the circumferential direction by a pole pitch (τ) and which with their two yoke legs are radially opposite the two rotor rings ( 16 , 17 ), leaving an air gap, an annular coil ( 23 ), disposed between the legs of the stator poles coaxially to the rotor axis, for generating a magnetic flux in the stator poles ( 24 , 25 ), the number of stator poles ( 24 , 25 ) in each stator module being 2 n , where n is a whole number, and at least one pair of stator pole groups ( 131 - 134 ) having the same number of stator poles ( 24 , 25 ) is formed, which are displaced relative to one another by an electrical angle α=180°/ν, where ν is the ordinal number of the harmonic that is suppressed in the torque.