Finite Element Based Multi-Objective Design Optimization Procedure of Interior Permanent Magnet Synchronous Motors for Wide Constant-Power Region Operation

"The paper proposes a design optimization procedure of three-phase Interior Permanent Magnet synchronous motors with minimum weight, maximum power output and suitable for wide constant-power region operation. The particular rotor geometry of the Interior Permanent Magnet synchronous motor and the presence of several variables and constraints make the design problem very complicated. Authors propose to combine an accurate Finite Element analysis with a multi-objective optimization procedure using a new algorithm belonging to the class of Controlled Random Search algorithms. . The optimization procedure has been employed to design two Interior Permanent Magnet motors for industrial application and city electrical scooter. A prototype has been realized and tested: comparison between predicted and measured performance shows the reliability of the simulation results and the effectiveness, the versatility and the robustness of the proposed procedure."