Design of an Axial-Flux Interior Permanent-Magnet Synchronous Motor for Automotive Application: Performance Comparison with Electric Motors Used in EVs and HEVs

Benlamine, Raouf; Dubas, Frédéric; Espanet, Christophe; Randi, Sid; Lhotellier, Dominique

doi:10.1109/vppc.2014.7007043

Cited by 27 publications

(12 citation statements)

References 23 publications

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“…Compared with the radial flux permanent magnet synchronous motor [45][46][47][48], the axial flux permanent magnet synchronous motor has the advantages of a compact axial structure and high torque density, so it may be a direction to realize the low-cost PM motor. In [30,32], researchers proposed the high torque density axial magnetic flux topology with low-cost ferrite PM, and thus the torque/PM-cost reached 9.05 Nm/USD and 13.31 Nm/USD respectively.…”

Section: ) Axial Flux Pm Motormentioning

confidence: 99%

Challenges Faced by Electric Vehicle Motors and Their Solutions

et al. 2021

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Section: ) Axial Flux Pm Motormentioning

confidence: 99%

Challenges Faced by Electric Vehicle Motors and Their Solutions

et al. 2021

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“…Indeed, economic dependency constitutes a strong objective for industrial electronics companies and that is the reason why industry and academia conduct research on PM-less machines (e.g., synchronous or switched-reluctance machines, induction machines) [1]. However, today, PMSMs are one of the most competitive machines for their high electromagnetic performances, massive torque, high efficiency, and low torque ripple [2,3]. Nevertheless, the speed variation leads to variable magnetic fields constituted of: (i) temporal harmonics due to the current waveform (e.g., sinusoidal, six-step rectangular, pulse-width modulation currents, etc.…”

Section: Context Of This Papermentioning

confidence: 99%

“…The eddy-current losses were calculated on different layers in the y-axis of massive conductive parts. Figure 19 shows the evolution of l P at the top, middle, and bottom of the massive conductive part for 6 mm mp h = with a discretization 3 3 y Nd = . It is interesting to note that the eddy-current losses present a non-uniform distribution depending on the height of the massive conductive part.…”

Section: Validation Of Modelmentioning

confidence: 99%

Combining the Magnetic Equivalent Circuit and Maxwell–Fourier Method for Eddy-Current Loss Calculation

Benmessaoud

Dubas

Hilairet

2019

MCA

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In this paper, a hybrid model in Cartesian coordinates combining a two-dimensional (2-D) generic magnetic equivalent circuit (MEC) with a 2-D analytical model based on the Maxwell-Fourier method (i.e., the formal resolution of Maxwell's equations by using the separation of variables method and the Fourier's series) is developed. This model coupling has been applied to a U-cored static electromagnetic device. The main objective is to compute the magnetic field behavior in massive conductive parts (e.g., aluminum, magnets, copper, iron) considering the skin effect (i.e., with the eddy-current reaction field) and to predict the eddy-current losses. The magnetic field distribution for various models is validated with 2-D and three-dimensional (3-D) finite-element analysis (FEA). The study is also focused on the discretization influence of 2-D generic MEC on the eddy-current loss calculation in conductive regions. Experimental tests and 3-D FEA have been compared with the proposed approach on massive conductive parts in aluminum. For an operating point, the computation time is divided by~4.6 with respect to 3-D FEA.

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“…The PM losses can be estimated from experimental measurement using the loss segregation or thermometric methods [4] and [7]- [19]. In order to reduce these losses, the PM of each pole can be segmented circumferentially, radially and/or axially [28]. Nevertheless, since the induced eddy-currents can be highly not uniformly distributed, it should be noted that a fine mesh discretization may be necessary to accurately model skin effect, which, in turn, may lead to numerical instability issues [43].…”

Section: A Context Of the Workmentioning

confidence: 99%

3-D Numerical Hybrid Method for PM Eddy-Current Losses Calculation: Application to Axial-Flux PMSMs

et al. 2015

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International audienceThis paper describes a 3-D numerical hybrid method (NHM) of the permanent-magnet (PM) eddy-current losses in axial-flux PM synchronous machines (PMSMs). The PM magnetic flux density is determined using the multi-static 3-D finite-element method (FEM) at resistance-limited (i.e., without eddy-current reaction field). Based on the predicted flux density distribution, the eddy-currents induced in the PMs and the 3-D PM eddy-current losses are calculated by 3-D finite-difference method (FDM) considering a large mesh. Therefore, this 3-D NHM is based on a coupling between the multi-static 3-D FEM and the 3-D FDM. Two 24-slots/16-poles (i.e., fractional-slot number) axial-flux PMSMs having a non-overlapping winding (all teeth wound type) with stator double-sided structure are studied: 1) surface-PM (SPM) and 2) interior-PM (IPM) To evaluate the reliability of the proposed technique, the 3-D PM eddy-current losses are determined and compared with transient 3-D FEM (i.e., magneto-dynamical 3-D FEM). The same nonlinear properties of the laminations have been applied for multi-static/transient 3-D FEM. The computation time can be divided by 25 with a difference less than 12%

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Design of an Axial-Flux Interior Permanent-Magnet Synchronous Motor for Automotive Application: Performance Comparison with Electric Motors Used in EVs and HEVs

Cited by 27 publications

References 23 publications

Challenges Faced by Electric Vehicle Motors and Their Solutions

Challenges Faced by Electric Vehicle Motors and Their Solutions

Combining the Magnetic Equivalent Circuit and Maxwell–Fourier Method for Eddy-Current Loss Calculation

3-D Numerical Hybrid Method for PM Eddy-Current Losses Calculation: Application to Axial-Flux PMSMs

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