8 (r 1 ,θ 1 ) d 2 *Polar coordinate with the axis center as the origin Settings for Geometrical Parameters ✓ Set geometrical parameters based on the rotor geometry of the double-layered IPMSM [2] ✓ Generate random numbers within the range of the upper and lower limit values of the geometry, and generate 12,000 shapes [2] Y. Shimizu et al., IEEJ Trans. Ind. Appl., Vol. 6, No. 6, pp. 401-408 (2017)