Exact Analytical Method for Magnetic Field Computation in the Air Gap of Cylindrical Electrical Machines Considering Slotting Effects

Lubin, Thierry; Mezani, Smaïl; Rezzoug, A.

doi:10.1109/tmag.2009.2036257

Cited by 142 publications

(82 citation statements)

References 17 publications

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“…In order to simplify the problem, the following assumptions can be used in this paper. 8,9 The field problem domain is divided into a number of subdomain based on the assumptions, the geometry of the machine, and the electrical and magnetic properties of each part of the machine: Region P (the PM subdomain), Region G (the air gap subdomain), Regions SO (i = 1, 2, . .…”

Section: B Electromagnetic Field Analysis Of the Ipm Machinementioning

confidence: 99%

“…Most papers published to date discuss the analytical field calculations for SPM machines only. [5][6][7][8][9] Some papers have addressed electromagnetic characteristic analyses for IPM machines using various techniques, including magnetic equivalent circuit (MEC) networks and the finite-element (FE) method. [10][11][12] The MEC technique can be implemented quickly and simply for the purpose of design optimization; however, its accuracy suffers because of oversimplification.…”

Section: Introductionmentioning

confidence: 99%

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Analytical prediction for electromagnetic performance of interior permanent magnet machines based on subdomain model

et al. 2017

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This paper presents an analytical model for the computation of the electromagnetic performance in interior permanent magnet (IPM) machines that accounts for the stator and the complex rotor structure. Using the subdomain method, we propose a simplified analytical model that considers the magnetic properties of the IPM machine. The analytical solutions are derived by solving the field-governing equations in each simple and regular subdomain, i.e., magnet, barrier, air gap, slot opening, and slot, and then applying the boundary conditions to the interfaces between these subdomains. The analytical model accurately accounts for the influence of the interaction between the slots, the relative recoil permeability of the magnets, and the boundary conditions. The magnetic field and electromagnetic performance obtained using the analytical method are compared with those obtained using finite element analysis. Finally, the analytical predictions are compared with the measured data in order to confirm the validity of the methods proposed in this paper.

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Section: B Electromagnetic Field Analysis Of the Ipm Machinementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analytical prediction for electromagnetic performance of interior permanent magnet machines based on subdomain model

et al. 2017

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“…To take into account the magnetic yoke, the method of images is used. -Fourier analysis based on the resolution of Maxwell's equations by the method of separation of variables [17][18][19][20][21][22][23][24]. This method assumes an infinite permeability of the ferromagnetic materials so iron faces appear as homogeneous boundary conditions.…”

Section: Soft-iron Yokementioning

confidence: 99%

Three-Dimensional Analytical Model for an Axial-Field Magnetic Coupling

Dolisy

Lubin

Mezani

et al. 2014

PIER M

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Abstract-In this paper, we propose an analytical method for modeling a permanent magnets axial field magnetic coupling. The three-dimensional model takes into account the radial fringing effects of the coupler. The analytical solution requires resolving the Laplace equation in low permeability subdomains. The magnetic field calculation allows the determination of global quantities like axial force and torque. 3D finite element computations as well as measurements validate the proposed model.

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“…This method is also applied in some papers [11][12][13][14][15][16][17][18] for slotted stator in permanent magnet machine (surface mounted permanent magnet machines, inset permanent magnet machines. .…”

Section: Introductionmentioning

confidence: 99%

Analytical Model on Real Geometries of Magnet Bars of Surface Permanent Magnet Slotless Machine

Boutora¹,

Takorabet²,

Ibtiouen³

2016

PIER B

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Abstract-We present in this paper an analytical model for the calculation of the electromagnetic field in a slotless surface mounted permanent magnet machines. This model takes into account the two essential directions of magnetization of the magnets, namely tangential magnetization and radial magnetization. It especially accounts for the parallel form of the magnetization direction. The model uses equivalent currents on the surfaces of the magnets, and in an original way, it uses currents in all volume of the magnet. The model is validated by numerical results obtained with a free software of calculation of the electromagnetic fields (FEMM: Finite Element Method Magnetics) which uses the finite elements method and by an existing experimental structure. The model is extended to the magnets segmented in bars and separated. It is then extended to the shape of magnets close to parallepiped forms which are really used in large machines.

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Exact Analytical Method for Magnetic Field Computation in the Air Gap of Cylindrical Electrical Machines Considering Slotting Effects

Cited by 142 publications

References 17 publications

Analytical prediction for electromagnetic performance of interior permanent magnet machines based on subdomain model

Analytical prediction for electromagnetic performance of interior permanent magnet machines based on subdomain model

Three-Dimensional Analytical Model for an Axial-Field Magnetic Coupling

Analytical Model on Real Geometries of Magnet Bars of Surface Permanent Magnet Slotless Machine

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