EM_SPMSM_AL_002

Objective

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

Machine

This validation simulates a machine that can be found in the article : L. J. Wu, Z. Q. Zhu, D. Staton, M. Popescu, and D. Hawkins, “Subdomain Model for Predicting Armature Reaction Field of Surface-Mounted Permanent-Magnet Machines Accounting for Tooth-Tips,” IEEE Trans. Magn., vol. 47, no. 4, pp. 812–822, 2011

This SPMSM (Surface Permanent Magnet Synchronous Machine) has 12 stator slots for 4 poles pairs (12s/8p). 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_004
Topology of machine SPMSM_004
Manatee model for machine SPMSM_004
Manatee model for machine SPMSM_004

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 comparison (FEMM vs Permeance/mmf)
Radial airgap flux comparison (FEMM vs Permeance/mmf)
Radial airgap flux comparison (FEMM vs Permeance/mmf)
Radial airgap flux comparison (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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