Amorphous Alloy High-Speed PMSM

High power & efficiency

Integrates an amorphous alloy stator with a Halbach permanent magnet array and is robustly optimized across electromagnetic, thermal, and rotor stress disciplines to maintain superior performance under uncertainties and tolerances.

Liu, Chengcheng · Kexin, Ren · Wang, Youhua · Zhao, Zhigang · Zhao, Fei

Journal of Electrical Engineering and Technology 2025

Advantages

Low computational cost

The RBF surrogate model replaces repeated finite element simulations, eliminating the need to repeatedly solve electromagnetic fields during optimization, thus drastically shortening the design cycle.

Robustness ensured

Robust optimization under design for six sigma (DFSS) ensures that electromagnetic, thermal, and stress performance remain stable under uncertainties and tolerances.

Multidisciplinary optimization

Electromagnetic, thermal, and rotor stress performances are integrated into the optimization objectives, avoiding degradation in other aspects when optimizing a single discipline.

Applications

• High-speed motor drives：Can be directly applied to high-speed drives such as compressors and flywheel energy storage.
• High-performance motors：Amorphous alloy and Halbach array enhance power density and efficiency.
• Aerospace electric propulsion：High power density and reliability meet aerospace propulsion demands.
• Electric aircraft：Lightweight design contributes to extended range of electric aircraft.
• UAV propulsion：High efficiency extends UAV endurance.