The calculation of forces and torques in an induction machine is sensi
tive to the distortion of the finite element mesh. Two different air g
ap regions are used to calculate the torque. One is in an actual induc
tion motor where the results can be compared to experimental data. The
other is an idealized round stator and rotor that can be compared to
closed form analytic solutions. In each case, the torque calculation i
s seen to be dependent upon mesh shape.