Axial Flux PM In-Wheel Motor for Electric Vehicles: 3D Multiphysics Analysis

Andrea Credo, Marco Tursini, Marco Villani, Claudia Di Lodovico, Michele Orlando and Federico Frattari
Additional contact information
Andrea Credo: Department of Industrial and Information Engineering and Economics, University of L’Aquila, Monteluco di Roio, 67100 L’Aquila, AQ, Italy
Marco Tursini: Department of Industrial and Information Engineering and Economics, University of L’Aquila, Monteluco di Roio, 67100 L’Aquila, AQ, Italy
Marco Villani: Department of Industrial and Information Engineering and Economics, University of L’Aquila, Monteluco di Roio, 67100 L’Aquila, AQ, Italy
Claudia Di Lodovico: Spin Applicazioni Magnetiche Srl, Via F. Corselli n. 11, 29122 Piacenza, PC, Italy
Michele Orlando: Spin Applicazioni Magnetiche Srl, Via F. Corselli n. 11, 29122 Piacenza, PC, Italy
Federico Frattari: Spin Applicazioni Magnetiche Srl, Via F. Corselli n. 11, 29122 Piacenza, PC, Italy

Energies, 2021, vol. 14, issue 8, 1-18

Abstract: The Axial Flux Permanent Magnet (AFPM) motor represents a valid alternative to the traditional radial flux motor due to its compact structure; it is suitable for in-wheel applications so that the transmission gear can be suppressed. The modeling of the motor is a purely Three-Dimensional (3D) problem and the use of 3D finite element tools allows the attainment of accurate results taking also into account the effects of the end-windings. Moreover, a 3D multiphysics analysis is essential to evaluate not only the motor performance and its thermal behavior, but also the electromagnetic forces acting on the surfaces of the stator teeth and of the magnets that face the air gap. Moreover, as the vehicle’s motors often work in variable-speed conditions, the prediction of vibrations and noise for electric motors over a wide speed range is usually necessary. The paper presents a double-sided AFPM motor for a small pure electric vehicle; the basic drive architecture includes four axial flux motors installed directly inside the vehicle’s wheels. The aim is to propose advanced and integrated electromagnetic, vibroacoustic and thermal analyses that allow the investigation of the axial flux motor behavior in a detailed and exhaustive way.

Keywords: axial flux; permanent magnet; in-wheel; electric vehicle; direct-drive; multiphysics; thermal; vibration; noise; 3D finite element analysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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