Objective
| Topology | SPMSM |
|---|---|
| Model Types | Subdomain model |
| Quantities | Cogging Torque |
| Geometry | internal rotor |
| Winding | single layer "concentrated" winding |
Objectives
This validation simulates the effect of stepped-rotor skew on cogging torque of Surface Permanent Magnet Synchronous Machine as done in the article : Z.Q. Zhu ; S. Ruangsinchaiwanich ; D. Ishak ; D. Howe, "Analysis of cogging torque in brushless Machines having nonuniformly distributed stator slots and stepped rotor magnets," IEEE Transactions on Magnetics ( Volume: 41, Issue: 10, Oct. 2005 )
Machine
- Manatee model for machine SPMSM_006
Results
The results of the article show that the optimal skew of the 2-step skew rotor is 3° (0.1 stator slot pitch):
One can find the same results in a few seconds of calculations with MANATEE software:
- Cogging Torque as a function of rotor skew rate
This validates the multi-slice subdomain model of MANATEE software for the fast calculate of 3D magnetic forces responsible for noise & vibration in electric motors.
