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High Power Density PMSM With Lightweight Structure and High-Performance Soft Magnetic Alloy Core

Permanent magnet synchronous motors (PMSMs) are increasingly used in the field of aerospace due to their high efficiency and high power density. High electromagnetic load and lightweight structure have been employed in motor design to improve power density. However, the saturation performance of iron-core material limits the application of high magnetic load in motors and lightweight structure is only used in rotor design. In this paper, four models are used to investigate that lightweight structure applied in stator and high-performance soft magnetic alloy core adoption can improve the power density of PMSM. The electromagnetic performances of four models are compared to verify that the proposed method can effectively improve the power density of PMSMs.