基于反演法的永磁电机定子等效建模方法

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关键词：永磁电机；反演法；模态分析；等效建模；等效力学参数

中图分类号：TM351

DOI：10.3969/j.issn.1004-132X.2025.11.002

Abstract： The stator core and winding configurations in permanent magnet motors were complex. When performing finite element simulations of vibration and noise，failure to apply equivalent treatment would compromise the accuracy of the simulation calculations. This paper employed an inversion method， commencing with modal testing of stator components to extract the 2nd～4th order cylindrical mode under both pre- and post-winding assembly conditions.Leveraging experimental data，a high-fidelity simulation model of the stator core was developed to derive the equivalent mechanics parameters. With the validated stator core simulation model，two winding modeling approached equivalent mass method and equivalent model method were implemented. Simulation-to-test comparisons revealed significant discrepancies in the equivalent mass method.Finally，elastic modulus and Poisson’s ratio for the winding equivalent model were inversely identified via modal test data. The equivalent model demonstrats less than 5% error in modal simulations.

Key words： permanent magnet motor； inversion method；modal analysis；equivalent modeling;equivalent mechanicsparameter

0 引言

定子是永磁电机的关键声学部件，作为振动噪声激励源，在仿真分析时需准确建立定子铁芯的有限元计算模型。（剩余7449字）