Open AccessAnalysis of electromagnetic exciting force and vibration of rotating armature permanent magnet synchronous motor
Author(s) -
Yang Zhanlu,
Wang Shanming,
Hong Jianfeng,
Li Jingsong
Publication year - 2018
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.8345
Subject(s) - vibration , armature (electrical engineering) , stator , modal analysis , acoustics , physics , magnet , finite element method , quantum mechanics , thermodynamics
The armature rotating permanent magnet synchronous motor has different vibration characteristics from other motors, as its electromagnetic exciting force has little relation to the frequency component about pole. In this study, analytical method was used to calculate the magnetic field and the electromagnetic exciting force of the proposed motor. Characteristics of the spatial distribution of the exciting force were displayed. Also, the finite element (FE) method was employed to simulate the vibration of the motor stator and obtain its vibration characteristics. The relationship between the electromagnetic exciting force and vibration mode shapes was analysed. The spatial distribution of the electromagnetic force is not the only decisive factor for the vibration mode shapes. To obtain the actual motor vibration, the motor stator modal and spatial distribution of the exciting force must be considered comprehensively. The results of the analytical calculations regarding vibration shapes and frequencies were basically consistent with those of FE simulations, and the results of vibration frequencies were in line with those of vibration tests. In this way, the analysis process of frequency got verified.