Design and optimization of a permanent magnet axial flux wheel motors for electric vehicle

Takorabet, Noureddine; Martin, Jean-Philippe; Meibody‐Tabar, Farid; Sharif, Fadi; Fontaine, Pascal

doi:10.1109/icelmach.2012.6350257

Cited by 12 publications

(7 citation statements)

References 8 publications

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“…A fractional-slot winding typically exhibits an inductance higher than the corresponding integer-slot winding configuration. In [6], the authors point out that the choice of a high number of rotor poles allows the reduction of the mass; however, the thickness of the magnetic air gap must be small compared to the pole pitch in order to reduce the leakage flux. In [4], the authors remark that the appropriate selection of the number of poles is important to realize a small-sized motor.…”

Section: The Afpm Motor Sizing Equationsmentioning

confidence: 99%

“…On the other hand, the direct-drive electric vehicle is simpler because it does not require transmission components and allows to reduce the volume and the weight of the whole system while improving its efficiency [2,3]: it could be the future trend for the new EVs. For this specific application, the Axial Flux Permanent Magnet (AFPM) motor represents a valid alternative to the traditional radial flux motor due to its compact structure; it can also be suitable to be placed inside the wheel so that the transmission gear is suppressed [4][5][6]. In [7], a prototype of an AFPM motor has been realized, tested and compared to a radial flux motor.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2021

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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.

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Section: The Afpm Motor Sizing Equationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

et al. 2021

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“…In recent bibliography both approximate and systematized optimization techniques have been proposed for electric traction applications [15][16][17][18][19][20][21][22]. The Taguchi's method along with extended sensitivity analysis techniques have been reported to yield satisfactory results even in demanding aerospace applications [21], in spite their simple nature.…”

Section: Index Terms-electricmentioning

confidence: 99%

Comparison of in-wheel permanent magnet motors for electric traction

Beniakar

Kakosimos

Krasopoulos

et al. 2014

2014 International Conference on Electrical Machines (ICEM)

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“…and his group proposed a basic concept of an axial gap synchronous motor with field winding, intending to apply it to the in-wheel motor of an automobile [17,18]. They focused on the consequent-pole axial rotor motor, and development of this motor Thus far, much research has been conducted to apply the axial gap permanent magnet motors to wheels [19][20][21], but as stated above, the concern of the members of Prof. Takemoto's group has been focused on the consequentpole axial gap motor, and there seems to be no reference from the standpoint of motor design on the optimal combination of the numbers of stator slots and rotor poles to achieve the reduced harmonics involved in the induced emf and torque. This research group has successfully searched for the best combination.…”

Section: Consequent-pole Ferrite Magnet Axial Gap Synchronous Motor Wmentioning

confidence: 99%

Design and control of variable field permanent magnet motors

Matsui

2019

IEEJ Transactions Elec Engng

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This is a survey paper focusing on permanent magnet motors with variable field capability. The synchronous motors, which have been applied to somewhat limited fields, have garnered attention as attractive electric drives. Due to a connection with rare‐earth magnet and power electronics‐based flexible control, current permanent magnet synchronous motors have achieved the best position in terms of high power and torque densities, high efficiency and flexible control capability. In order to satisfy the diverse demands of users, a motor is requested to ensure high‐efficiency operation at multiple operating points on the speed–torque plane. It is well recognized that maximum efficiency is attained under the condition that the copper loss is equal to the fixed loss, mainly composed of iron loss, at a given operating point. This is why permanent magnet synchronous motors should have the capability of adjusting the field excitation, similar to the direct current shunt motors. In this paper, recent trends of research and development of variable field permanent magnet motors are overviewed from the standpoint of design and control. © 2019 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

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Design and optimization of a permanent magnet axial flux wheel motors for electric vehicle

Cited by 12 publications

References 8 publications

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

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

Comparison of in-wheel permanent magnet motors for electric traction

Design and control of variable field permanent magnet motors

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