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This paper presents an innovative motorization, i.e., an axial-flux permanentmagnet (PM) motor (AFPMM), for direct drive automotive, mainly for electric vehicles (EVs). The AFPMM has been designed from a three-dimensional (3-D) finite-element analysis (FEA). To demonstrate these electromechanical performances, this motorization has been compared to a radial-flux PM motor (RFPMM) having the same outer diameter and the same rotor polarity. The RFPMM has been simulated by using a two-dimensional (2-D) FEA. The optimization procedure is based on a multi-parametric approach with FEA. Comparison of the results between the two electrical machines has been presented supporting the conclusion that this AFPMM will provide interesting industrial perspectives.
direct drive automotive, finite-element analysis, optimization, permanent-magnet, synchronous machine.
The work presented in this paper has been achieved in the framework of the TRAX project, which is carried out by a consortium of industrial companies (Nief-Plastic, R. Bourgeois, Schneider-Electric, Peugeot-Jappy, Phenix-International) and laboratories of the university and the CNRS (Department of ENERGY of the FEMTO-ST Institute – Scientific National Research Center and INSA-Lyon). This project has been selected by the French FUI (Interministerial Funds) and the French cluster “Vehicule Du Futur” and will be co-funded by the regional fund of for innovation and the French Government. The goal of the project is to develop a new generation of more effective and economical motors for electric and hybrid vehicles. These machines will have a power range from 7.5 to 15 kW, which will enable successful solutions in terms of specific power and energy efficiency for these new vehicles.
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