Contribution to the definition of a permanent magnet motor with reduced production cost for the electrical vehicle propulsion

摘要

This paper deals with a methodology for the design of a permanent magnet motor dedicated for traction. Several structures to reduce the permanent magnet motor production cost are explored. The most promising is an axial flux modular structure with straight slots and concentrated windings. Optimisation procedures are presented and applied to find these structures. An analytic dimensioning step is carried out simultaneously with a finite element electromagnetic modelling step so as to validate gradually the computational analysis. Then, a fine-tuned finite element model is realised dynamically so as to validate wave forms that depend strongly on the machine geometry as well as on the electromagnetic motor torque. This study has allowed the entire validation of the analytic sizing computations.