Article Details

Abstract

Permanent magnet synchronous motors are widely used in armored equipment. Due to the special application environment of armored equipment, the motors are subjected to strong vibration and impact during operation, which may cause damage or even fracture to the silicon steel sheets of the motor rotor magnetic steel. Especially for the Interior Permanent Magnet Synchronous Motor (IPMSM) with high electromagnetic performance, its rotor core is usually provided with slots of various shapes, which has a particularly significant impact on the stress distribution of the rotor. The stress distribution on the surface of the rotor magnetic steel is difficult to analyze, and it is hard to optimize the stress of the rotor magnetic steel during the design process. To solve this problem, this paper takes the rotor magnetic steel of a vehicle-mounted IPMSM as the research object, establishes its equivalent magnetic circuit model, derives the analytical expressions of the air-gap unbalanced electromagnetic force and the centrifugal force during rotor rotation process, analyzes the stress distribution under different rotating speeds based on the motor finite element model, and provides ideas for the optimal design of motor stress.

Keywords

Finite Element Analysis (FEA); IPMSM; analytical calculation; stress analysis

References

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About the authors

Zhao Yang (born on October 1983), male, Han ethnicity, from Luohe, Henan, is an engineer and a master's student with a research focus on vehicle technology.