Topology Optimization of Asymmetric PMSM Rotor

Topology Optimization of Asymmetric PMSM Rotor

This paper investigates the optimization of iron distribution in the rotor of a permanent magnet synchronous machine. The objective is to maximize the average torque for fixed permanent magnets positions, stator, and current feedings. To do so, a density-based algorithm is used with the adjoint vari...

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Bibliographic Details
Published in:2022 International Conference on Electrical Machines (ICEM) pp. 469 - 475
Main Authors: Cherriere, T., Hlioui, S., Laurent, L., Louf, F., Ahmed, H. Ben, Gabsi, M.
Format: Conference Proceeding
Language:English
Published: IEEE 05-09-2022
Subjects:
Asymmetric rotor
Density method
Magnetostatics
Nonlinear magnetostatics
PM machine
Rotors
Sensitivity
Stator windings
Synchronous motors
Topology optimization
Torque
Windings
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Summary:This paper investigates the optimization of iron distribution in the rotor of a permanent magnet synchronous machine. The objective is to maximize the average torque for fixed permanent magnets positions, stator, and current feedings. To do so, a density-based algorithm is used with the adjoint variable method to compute sensitivities. It returns non-symmetric geometries, which are related to the interactions between magnets and winding fluxes, as well as the machine operating mode (motor or generator for a given rotation direction). For a given single working point, we obtain asymmetric topologies that outperform the optimized symmetric design, while the symmetric rotor topology is more multifunctional.
DOI:10.1109/ICEM51905.2022.9910650