Analytical prediction of electromagnetic performance of surface-mounted PM machines based on subdomain model accounting for tooth-tips

Wu, Lijian; Zhu, Z. Q.; Staton, D.A.; Popescu, Mircea; Hawkins, D.

doi:10.1049/iet-epa.2010.0271

Cited by 79 publications

(62 citation statements)

References 40 publications

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“…The Accuracy of analytical models has been verified with finite element simulations for the air-gap and PM subdomains. In comparison with radial surface-mounted PM motors where the effect of stator slot tooth-tips doesn't modify highly the waveform and amplitude of magnetic field distribution even when the tooth-tips opening are smaller than the slots opening [6], it is not the case for parallel double excitation and spoketype PM motors which have tooth-tips both in the rotor and stator sides. For this type of machines, the effect of stator, rotor and PM tooth-tips can modify highly the amplitude and waveform of magnetic field distribution and electromagnetic performances when rotor, stator and PM tooth-tips opening is smaller than slots opening, due to the mutual influence between stator and rotor slots.…”

Section: Resultsmentioning

confidence: 96%

“…The proposed analytical model is based on subdomain method. Many authors have proposed analytical simplified and exact models based on subdomain method in order to study the stator slotting effects (with or without tooth-tips) on magnetic field distribution and electromagnetic performances (under no-load and load conditions) in radial inset and surface-mounted permanent magnet motors [1][2][3][4][5][6][7][8][9][10][11]. It was shown that the accuracy of subdomain models is higher than permeance models [12] or conformal transformations models [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analytical Calculation of Parallel Double Excitation and Spoke-Type Permanent-Magnet Motors; Simplified Versus Exact Model

Boughrara¹,

Lubin

Ibtiouen³

et al. 2013

PIER B

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Abstract-This paper deals with the prediction of magnetic field distribution and electromagnetic performances of parallel double excitation and spoke-type permanent magnet (PM) motors using simplified (SM) and exact (EM) analytical models. The simplified analytical model corresponds to a simplified geometry of the studied machines where the rotor and stator tooth-tips and the shape of polar pieces are not taken into account. A 2D analytical solution of magnetic field distribution is established. It involves solution of Laplace's and Poisson's equations in stator and rotor slots, airgap, buried permanent magnets into rotor slots and non magnetic region under magnets. A comparison between the results issued from the simplified model with those from exact model (EM) (which represents a more realistic geometry with stator and rotor tooth-tips and the shape of polar pieces) is done to show the accuracy of the simplified geometry on magnetic field distribution and electromagnetic performances (cogging torque, electromagnetic torque, flux linkage, back-EMF, self and mutual inductances). The analytical results are verified with those issued from finite element method (FEM).

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Section: Resultsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Analytical Calculation of Parallel Double Excitation and Spoke-Type Permanent-Magnet Motors; Simplified Versus Exact Model

Boughrara¹,

Lubin

Ibtiouen³

et al. 2013

PIER B

View full text Add to dashboard Cite

show abstract

“…The Laplace's equation (17) in the outside region and in the shaft of the machine (where the relative recoil permeability is equal to 1) is given by Taking into account the finite value of vector potential at the infinity radius for internal rotor FSM and at null radius for external rotor FSM, the solution of equation (17) is…”

Section: F Outside Machine and Shaft Subdomainsmentioning

confidence: 99%

General Subdomain Model for Predicting Magnetic Field in Internal and External Rotor Multiphase Flux-Switching Machines Topologies

2013

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“…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%

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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Analytical prediction of electromagnetic performance of surface-mounted PM machines based on subdomain model accounting for tooth-tips

Cited by 79 publications

References 40 publications

Analytical Calculation of Parallel Double Excitation and Spoke-Type Permanent-Magnet Motors; Simplified Versus Exact Model

Analytical Calculation of Parallel Double Excitation and Spoke-Type Permanent-Magnet Motors; Simplified Versus Exact Model

General Subdomain Model for Predicting Magnetic Field in Internal and External Rotor Multiphase Flux-Switching Machines Topologies

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

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