Abstract
A Synchronous Reluctance Motor (SynRM),
which has sinusoidal rotor lamination shape in the axial
direction, is proposed. The sinusoidal lamination shape is
utilized to vary the magnetic flux in the q-axis direction.
Therefore, cancelling some torque harmonics produced by
slotting effects. The stator geometry of a 1.5 kW, conventional
three-phase squirrel cage induction motor, with distributed
double layer winding, chorded by one slot, is used for both basic
and proposed models. Due to the axial geometry design of
sinusoidal lamination shape for the proposed model, 3-D Finite
Element Method (FEM) is used for dynamic analysis. From the
FEM results, it evidenced that with current vector angle of
45oelectric, the proposed model reduced the torque ripple
content by more than 60 % and still maintained the average
torque.