EM_SPMSM_AL_004

Objective

Validation objective
Topology SPMSM
Model Types Electromagnetic linear magnetostatic FEM EM3.PMSM
Electromagnetic permeance / stator mmf model EM1.SPMSM
Quantities Airgap radial armature flux density waveforms
Geometry Internal rotor
Semi-closed slots
Winding Single layer non-overlapping windings with "alternate teeth wound"

Machine

This validation simulate a machine that you can find in the article : Lubin, S. Mezani, and A. Rezzoug, “2-D Exact Analytical Model for Surface-Mounted Permanent-Magnet Motors with Semi-Closed Slots,” IEEE Trans. Magn., vol. 47, no. 2, pp. 479–492, 2011.

This SPMSM (Surface Permanent Magnet Synchronous Machine) has 6 stator slots for 2 poles pairs (6s/4p). The airgap field computation is done by a permeance and mmf model (Magnetomotive Force) along the airgap.
Stator slots are filled with Single layer non-overlapping windings with "alternate teeth wound", creating armature field.

Topology of machine SPMSM_002
Topology of machine SPMSM_002
Topology of the machine in the article: Lubin, S. Mezani, and A. Rezzoug, “2-D Exact Analytical Model for Surface-Mounted Permanent-Magnet Motors with Semi-Closed Slots,” IEEE Trans. Magn., vol. 47, no. 2, pp. 479–492, 2011.
Manatee model for machine SPMSM_002
Manatee model for machine SPMSM_002
Manatee Model of the machine in the article : Lubin, S. Mezani, and A. Rezzoug, “2-D Exact Analytical Model for Surface-Mounted Permanent-Magnet Motors with Semi-Closed Slots,” IEEE Trans. Magn., vol. 47, no. 2, pp. 479–492, 2011.

Results

The permeance and mmf model implemented on MANATEE is compared with the FEMM model in the figures below. (See the different Electromagnetic Modules).

Radial airgap flux (Femm vs Permeance/mmf)
Radial airgap flux (Femm vs Permeance/mmf)

This analytical model is accurate enough to enables a first design optimization of an SPMSM.
To see the air gap field compute by a semi-analytical subdomain model, click here.

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