A novel 12-teeth/10-poles PM machine with flux barriers in stator yoke

Using magnetic flux barriers in the stator yoke of electric machines with fractional slots, tooth-concentrated winding it is possible to reduce or even to cancel some space harmonics of low order in air-gap flux density resulting in lower rotor losses induced by the armature reaction field. This technique is applied to a PM machine with 12-teeth/10-poles winding during designing of an electric machine for automotive application. According to the new technique a prototype machine is buildet and some measurement results are given. The first measurement results for the induced voltage show a good agreement with the simulation data.